CN117169609B

CN117169609B - Antenna polarization characteristic measurement system and measurement method

Info

Publication number: CN117169609B
Application number: CN202311454303.6A
Authority: CN
Inventors: 熊思羽
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-03-08
Anticipated expiration: 2043-11-03
Also published as: CN117169609A

Abstract

The embodiment of the application provides a measurement system and a measurement method for antenna polarization characteristics, and relates to the technical field of antennas. According to the scheme, the polarization characteristic of the antenna to be measured in the electronic equipment can be accurately measured under the condition that the integrity of the electronic equipment is not damaged. The measurement system includes: the antenna comprises a standard antenna pair, a rotatable clamp, a switching unit, a polarized signal construction unit, an excitation unit and a control unit. Each standard antenna pair is connected to 2 of the inputs of the switching unit. The first output end of the polarized signal construction unit is connected with the first output end of the switching unit, and the second output end of the polarized signal construction unit is connected with the second output end of the switching unit. The 1 input end of the polarized signal construction unit is connected with the signal output end of the excitation unit. The control unit is respectively coupled with the control ends of the switching unit, the rotatable clamp, the polarized signal construction unit and the excitation unit. The standard antenna pair includes a first antenna and a second antenna having different polarization characteristics.

Description

Antenna polarization characteristic measurement system and measurement method

Technical Field

The embodiment of the application relates to the technical field of antennas, in particular to a system and a method for measuring polarization characteristics of an antenna.

Background

The polarization characteristics of the antenna have a significant impact on the signal reception process of the antenna.

Currently, for measurement of polarization characteristics of antennas already configured in electronic devices, it is often necessary to destroy the electronic devices, and make the antennas to be measured therein into passive jigs for measurement. Thus, the integrity of the electronic equipment is damaged, and the measurement result is inaccurate.

Disclosure of Invention

The application provides a system and a method for measuring polarization characteristics of an antenna, which can accurately measure the polarization characteristics of the antenna to be measured in electronic equipment under the condition of not damaging the integrity of the electronic equipment.

In order to achieve the technical purpose, the application adopts the following technical scheme:

in a first aspect, a measurement system for measuring polarization characteristics of an antenna to be measured, the antenna to be measured being configured in an electronic device, is provided. The measurement system includes: n standard antenna pairs, a rotatable clamp, a switching unit, a polarized signal construction unit, an excitation unit, and a control unit. n is an integer greater than or equal to 1. The switching unit is configured with 2n inputs, and each of the standard antenna pairs is connected to 2 of the 2n inputs of the switching unit. The switching unit is provided with a first output end and a second output end, the first output end of the polarized signal construction unit is connected with the first output end of the switching unit, and the second output end of the polarized signal construction unit is connected with the second output end of the switching unit. The polarization signal construction unit is provided with 1 input terminal, and the 1 input terminal of the polarization signal construction unit is connected with the signal output terminal of the excitation unit. The control unit is coupled with the control ends of the switching unit, the rotatable clamp, the polarized signal construction unit and the excitation unit respectively. The n standard antenna pairs include a first standard antenna pair including a first antenna and a second antenna, the first antenna and the second antenna having different polarization characteristics. The working frequency bands of the first antenna and the second antenna are first frequency bands, the working frequency band of the antenna to be tested is second frequency bands, and the first frequency bands cover the second frequency bands.

Thus, by the arrangement of the measurement system, by the arrangement of the switching unit, the polarized signal construction unit, and the excitation unit, it is possible to construct a signal reception scene corresponding to the antenna to be measured under the control of the control unit. And the control unit can realize the measurement of polarization characteristics of the positions of all standard antennas in a receiving scene based on the measurement system.

Optionally, the measurement system is configured to measure polarization characteristics of the receiving frequency band of the antenna to be measured, where the rotatable fixture is configured to clamp the electronic device. The excitation unit is used for generating a first excitation signal under the control of the control unit. The switching unit is used for working in a first state under the control of the control unit. The first state corresponds to the first input end of the switching unit being conducted with the first output end of the switching unit, and the second input end of the switching unit being conducted with the second output end of the switching unit. The first input and the second input of the switching unit are included in 2n inputs of the switching unit. The first input end and the second input end of the switching unit are respectively connected with the first antenna and the second antenna of the first standard antenna pair. The polarized signal construction unit is used for exciting the first standard antenna pair through the switching unit according to the first excitation signal under the control of the control unit. The first standard antenna is used for radiating the second frequency band according to the received excitation signal. The control unit is used for acquiring a first relevant parameter from the electronic equipment. The first relevant parameter is obtained by measuring the electromagnetic wave radiated by the electronic equipment through the antenna to be measured and receiving the electromagnetic wave radiated by the first standard antenna. The control unit is also used for determining the polarization characteristic of the antenna to be tested at the first position when the antenna to be tested works at the first frequency point to be tested according to the first related parameter. The first frequency point to be detected is included in the receiving frequency band of the second frequency band, and the first position is the position where the central position of the first standard antenna is located.

Based on this scheme, a specific implementation determination scheme for determining polarization characteristics of the first standard antenna pair at the first position is provided. Therefore, the accurate measurement of the polarization characteristic under the receiving scene can be realized without disassembling the electronic equipment.

Optionally, the polarization signal construction unit is configured to excite, by the switching unit, the first standard antenna pair according to the first excitation signal under the control of the control unit, and includes: the polarization signal construction unit is used for working in a first bypass state under the control of the control unit. In the first bypass state, the input of the polarization signal construction unit and the first output of the polarization signal construction unit are connected. The polarized signal construction unit is used for transmitting the first excitation signal from the first output end to the switching unit so as to excite the first antenna of the first standard antenna through the first excitation signal.

Optionally, the first correlation parameter includes a first RSSI. The control unit is configured to obtain a first relevant parameter from the electronic device, including: the control unit is used for acquiring the first RSSI from the electronic equipment. The first RSSI is the RSSI of the first frequency point to be detected, which is obtained by the electronic equipment through the antenna to be detected and the electromagnetic wave radiated by the first antenna according to the first excitation signal after measurement.

Thus, by the switching unit operating in the first bypass state, the control unit may obtain the RSSI from the electronic device when only the horizontally polarized signal is received as a subsequent reference.

Optionally, the polarization signal construction unit is configured to excite, by the switching unit, the first standard antenna pair according to the first excitation signal under the control of the control unit, and includes: the polarization signal construction unit is used for working in a second bypass state under the control of the control unit. Wherein in the second bypass state, the input of the polarization signal construction unit and the second output of the polarization signal construction unit are conductive. The polarized signal construction unit is used for transmitting the first excitation signal from the second output end to the switching unit so as to excite the second antenna of the first standard antenna through the second excitation signal.

Optionally, the first correlation parameter further includes a second RSSI. The control unit is configured to obtain a first relevant parameter from the electronic device, including: the control unit is configured to obtain the second RSSI from the electronic device. The second RSSI is the RSSI of the first frequency point to be detected, which is obtained by the electronic equipment through the antenna to be detected and the electromagnetic wave radiated by the second antenna according to the first excitation signal after measurement.

Thus, by the switching unit operating in the second bypass state, the control unit can acquire the RSSI when only the vertically polarized signal is received from the electronic device as a subsequent reference.

The control unit can comprehensively judge the capability of the antenna to be tested for receiving signals in different directions through the RSSI of the horizontal polarized signals and the RSSI of the vertical polarized signals, and further determine the polarization characteristics of the antenna to be tested according to the capability.

Optionally, the control unit is further configured to determine a first amplitude ratio according to the first RSSI and the second RSSI. The first amplitude ratio corresponds to the first position.

Optionally, the control unit is further configured toThe first RSSI and the second RSSI determine a first amplitude ratio, and specifically include: the control unit determines the first amplitude ratio as。

The control unit may determine the phase difference at the first position after obtaining the amplitude ratio at the first position according to the scheme implementation provided in the subsequent example. Further, the amplitude ratio and the phase difference are combined to determine the polarization characteristic of the first position.

Optionally, the polarization signal construction unit is configured to excite, by the switching unit, the first standard antenna pair according to the first excitation signal under the control of the control unit, and includes: the polarization signal construction unit is used for working in a power division state under the control of the control unit. In the power division state, the input end of the polarized signal construction unit and the first output end and the second output end of the polarized signal construction unit are coupled and conducted. The polarization signal construction unit is specifically configured to generate a second excitation signal and a third excitation signal according to the first excitation signal under the control of the control unit. The second excitation signal is identical in amplitude and phase to the first excitation signal. The amplitude of the second excitation signal is the product of the amplitude of the third excitation signal and the first amplitude ratio. The phase difference between the phase of the second excitation signal and the phase of the third excitation signal is a first value. The first output end of the switching unit receives the second excitation signal, so that the first antenna radiates according to the second excitation signal. The second output end of the switching unit receives the third excitation signal, so that the second antenna radiates according to the third excitation signal.

Optionally, the first correlation parameter further includes a third RSSI. The control unit is configured to obtain a first relevant parameter from the electronic device, including: the control unit is configured to obtain the third RSSI from the electronic device. The third RSSI is the RSSI of the first frequency point to be measured, which is obtained by measuring after the electronic equipment receives the electromagnetic waves radiated by the first antenna and the second antenna through the antenna to be measured.

Optionally, the control unit is further configured to determine whether the third RSSI reaches a target threshold. The target threshold corresponds to the first RSSI. The control unit is further configured to determine the first value as a first phase difference, the first phase difference corresponding to the first location, if the third RSSI reaches the target threshold. The control unit is further configured to control the polarized signal construction unit to adjust a phase difference of the third excitation signal and the second excitation signal to a second value, which is different from the first value, in case the third RSSI is smaller than the target threshold. For example, the target threshold may be twice the first RSSI.

In this way, by adjusting the phase difference of the two excitation signals and monitoring the synthesis effect of the two signals received by the antenna to be tested, the received RSSI can reach the maximum value, such as twice the first RSSI, under the condition that the polarization characteristics of the antenna to be tested can be matched with the phase difference of the two excitation signals. Thus, the phase difference between the two excitation signals can be determined as the phase difference of the antenna to be measured at the first position.

Optionally, the control unit is further configured to determine, according to the first related parameter, polarization characteristics of the antenna to be measured at the first position when the antenna to be measured works at the first frequency point to be measured, where the method specifically includes: the control unit is configured to determine polarization characteristics of the first location based on the first amplitude ratio and the first phase difference.

Alternatively, when the first amplitude ratio is equal to 1 and the first phase difference is 90 ° or-90 °, the control unit is configured to determine that the polarization characteristic of the first position is circular polarization. The control unit is configured to determine that the polarization characteristic of the first position is linear polarization when the first phase difference is 0 ° or 180 ° or-180 °. Where the first amplitude ratio is not equal to 1. Alternatively, the control unit is configured to determine that the polarization characteristic of the first location is elliptical polarization when the first amplitude ratio is equal to 1 and the first phase difference is not 0 ° or 180 ° or-180 ° or 90 ° or-90 °.

Thus, the present application specifically provides an implementation of determining polarization characteristics of a first location from a first amplitude ratio and a first phase difference.

Optionally, the polarization characteristics of the first antenna and the second antenna are orthogonal to each other.

Optionally, the planes of the n standard antenna pairs are perpendicular to the rotation plane of the rotatable fixture.

Optionally, the n standard antenna pairs include a first standard antenna pair and further include a second standard antenna pair, and the second standard antenna pair also includes the first antenna and the second antenna. The measurement system is also used for measuring polarization characteristics of a second position corresponding to the second standard antenna pair. It will be appreciated that the above examples provide a detailed determination of the polarization characteristics of the first location. In this example, the measurement system may also make other location polarization characteristic determinations through other location standard antenna pairs. Similar to the polarization characteristic determination process of the first location, the polarization characteristic determination scheme of the other location (e.g., the second location) can also enable accurate measurement of the polarization characteristic without damaging the electronic device.

Therefore, the measurement system provided by the embodiment of the application can measure the polarization characteristics of the receiving frequency band by combining the various implementations.

In other embodiments, the measurement system provided in the embodiments of the present application may also perform measurement of polarization characteristics of the transmitting frequency band.

Optionally, the measurement system further comprises: and an analysis unit. The first input end of the analysis unit is connected with the first output end of the switching unit, and the second input end of the analysis unit is connected with the second output end of the switching unit. The output end of the analysis unit is connected with the control unit. The analysis unit is also connected with the control unit through a control port.

Optionally, the measurement system is further configured to measure polarization characteristics of the transmitting frequency band of the antenna to be measured. The rotatable clamp is used for clamping the electronic equipment. The switching unit is used for working in a first state under the control of the control unit. The first state corresponds to the first input end of the switching unit being conducted with the first output end of the switching unit, and the second input end of the switching unit being conducted with the second output end of the switching unit. The first input and the second input of the switching unit are included in 2n inputs of the switching unit. The first input end and the second input end of the switching unit are respectively connected with the first antenna and the second antenna of the first standard antenna pair. The first antenna is for generating a first received signal. The switching unit is used for outputting the first receiving signal from the first output end to the analysis unit. The second antenna is for generating a second received signal. The switching unit is used for outputting the second receiving signal from the second output end to the analysis unit. The first antenna and the second antenna generate corresponding receiving signals according to electromagnetic waves in surrounding space, and the electromagnetic waves in the surrounding space are emitted by the electronic equipment through the antenna to be detected. The analysis unit is used for determining a second amplitude ratio and a second phase difference according to the first received signal and the second received signal. The second amplitude ratio and the second phase difference respectively correspond to a second frequency point to be measured, and the second frequency point to be measured is included in the transmitting frequency band of the second frequency band. The control unit is also used for determining the polarization characteristic of the antenna to be tested at the first position when the antenna to be tested works at the second frequency point to be tested according to the second amplitude ratio and the second phase difference. The first position is the position where the center position of the first standard antenna is located.

Therefore, through the cooperation of the standard antenna pair, the rotatable clamp, the switching unit, the analysis unit and the control unit in the measurement system, the polarization characteristic of the transmitting frequency band can be accurately measured. It will be appreciated that in some cases, taking the transmission frequency band measurement as an example, the polarized signal construction unit and the excitation unit configured in the measurement system may be electrically in a sleep state. Correspondingly, taking the receiving frequency band measurement as an example, the analysis unit configured in the measurement system may be powered down in a sleep state.

In a second aspect, a measurement system for measuring polarization characteristics of an antenna to be measured, the antenna to be measured being configured in an electronic device, is provided. The measurement system includes: n standard antenna pairs, a rotatable clamp, a switching unit, an analysis unit, and a control unit. n is an integer greater than or equal to 1. The switching unit is configured with 2n inputs, and each of the standard antenna pairs is connected to 2 of the 2n inputs of the switching unit. The switching unit is provided with a first output end and a second output end, the first output end of the polarized signal construction unit is connected with the first output end of the switching unit, and the second output end of the polarized signal construction unit is connected with the second output end of the switching unit. The polarization signal construction unit is provided with 1 input terminal, and the 1 input terminal of the polarization signal construction unit is connected with the signal output terminal of the excitation unit. The first input end of the analysis unit is connected with the first output end of the switching unit, and the second input end of the analysis unit is connected with the second output end of the switching unit.

The control unit is coupled with the control ends of the switching unit, the rotatable clamp and the analysis unit respectively. The n standard antenna pairs include a first standard antenna pair including a first antenna and a second antenna, the first antenna and the second antenna having different polarization characteristics. The working frequency bands of the first antenna and the second antenna are first frequency bands, the working frequency band of the antenna to be tested is second frequency bands, and the first frequency bands cover the second frequency bands.

The measurement system provided in the first aspect can support measurement of polarization characteristics of a transmitting frequency band and a receiving frequency band. In the measurement system provided in the second aspect, the unit is excited by simplifying the polarized signal construction unit, so that the measurement of the polarization characteristic can be realized by fewer unit modules in a scene where only the polarization characteristic of the transmission frequency band needs to be measured.

Optionally, the n standard antenna pairs include a first standard antenna pair and further include a second standard antenna pair, and the second standard antenna pair also includes the first antenna and the second antenna. The measurement system is also used for measuring polarization characteristics of a second position corresponding to the second standard antenna pair.

In a third aspect, there is provided a method of measuring polarization characteristics, the method being applied to the measurement system provided in the first aspect and any one of its possible designs. The method is used for measuring polarization characteristics of the antenna to be measured when the antenna to be measured works in a receiving frequency band. The method comprises the following steps: a first excitation signal is generated. And according to the first excitation signal, exciting a first antenna in the first standard antenna pair to radiate. And acquiring a first RSSI measured by the electronic equipment provided with the antenna to be measured. And according to the first excitation signal, exciting a second antenna in the first standard antenna pair to radiate. And acquiring a second RSSI measured by the electronic equipment through the antenna to be measured. A first amplitude ratio is determined based on the first RSSI and the second RSSI. A second excitation signal and a third excitation signal are generated from the first excitation signal. The second excitation signal is identical in amplitude and phase to the first excitation signal. The amplitude of the second excitation signal is the product of the amplitude of the third excitation signal and the first amplitude ratio. The phase difference between the phase of the third excitation signal and the phase of the second excitation signal is a first value. The first antenna is excited to radiate according to the second excitation signal, and the second antenna is excited to radiate according to the third excitation signal. And acquiring a third RSSI, wherein the third RSSI is obtained by the electronic equipment through the measurement of the surrounding electromagnetic waves received by the antenna to be measured. Based on the third RSSI, a first phase difference is determined. The first phase difference corresponds to the first position. And determining the polarization characteristic of the antenna to be measured at a first position when the antenna to be measured works at a first frequency point to be measured according to the first amplitude ratio and the first phase difference.

Optionally, the determining the first phase difference according to the third RSSI includes: in the case where the third RSSI reaches a target threshold, the first value is determined as the first phase difference. The target threshold corresponds to the first RSSI.

Optionally, in the case that the third RSSI is less than the target threshold, the method further comprises: the phase difference between the third excitation signal and the second excitation signal is adjusted to a second value, which is different from the first value. And re-acquiring the third RSSI. In the case where the re-acquired third RSSI reaches the target threshold, the second value is determined as the first phase difference.

Optionally, the target threshold corresponds to the first RSSI, including: the target threshold is。

Optionally, before the generating the second excitation signal and the third excitation signal, the method further comprises: the first value is determined.

Optionally, the determining the first value includes: a fourth excitation signal is generated, wherein the fourth excitation signal has the same amplitude as the third excitation signal and has the same phase as the second excitation signal. The first antenna is excited to radiate by the second excitation signal, and the second antenna is excited to radiate by the fourth excitation signal. And acquiring a fourth RSSI, wherein the fourth RSSI is acquired by measuring the electromagnetic wave radiated by the electronic equipment through the antenna to be measured and receiving the electromagnetic wave radiated by the first standard antenna. The first value is determined based on the fourth RSSI.

Optionally, the first value is。

Optionally, when determining that the antenna to be measured works at the first frequency point to be measured, after the polarization characteristic of the first position, the method further includes: and determining the polarization characteristic of the antenna to be measured at the second position when the antenna to be measured works at the first frequency point to be measured. The second position is a position corresponding to a second standard antenna pair included in the n standard antenna pairs.

Optionally, after determining the polarization characteristic of each of the n standard antenna pairs at the corresponding location, the method further includes: the rotatable clamp is controlled to rotate from the current first posture to the second posture, and polarization characteristics of corresponding positions of each of the n standard antenna pairs are measured again.

In a fourth aspect, there is provided a method of measuring polarization characteristics, the method being applied to a measurement system as provided in the second aspect and any one of its possible designs. The method is used for measuring the polarization characteristic of the antenna to be measured when the antenna works in a transmitting frequency band. The method comprises the following steps: the first antenna of the first standard antenna pair receives electromagnetic waves radiated by the antenna to be tested and generates a first receiving signal. The second antenna of the first standard antenna pair receives electromagnetic waves radiated by the antenna to be tested and generates a second receiving signal. The analysis unit acquires the first received signal and the second received signal through the switching unit. A second amplitude ratio and a second phase difference are determined from the first received signal and the second received signal. The second amplitude ratio and the second phase difference respectively correspond to a second frequency point to be measured, and the second frequency point to be measured is included in a transmitting frequency band of the working frequency band of the antenna to be measured. And determining the polarization characteristic of the antenna to be measured at the first position when the antenna to be measured works at the second frequency point to be measured according to the second amplitude ratio and the second phase difference. The first position is the position where the center position of the first standard antenna is located.

Optionally, when determining that the antenna to be measured works at the second frequency point to be measured, after the polarization characteristic of the first position, the method further includes: and determining the polarization characteristic of the antenna to be measured at the second position when the antenna to be measured works at the second frequency point to be measured. The second position is a position corresponding to a second standard antenna pair included in the n standard antenna pairs.

In a fifth aspect, the present application also provides a chip system, the chip system being applied to a measurement system; the system-on-chip may include one or more interface circuits and one or more processors. The interface circuit and the processor are interconnected by a line, the interface circuit being adapted to receive a signal from a memory of the electronic device and to send the signal to the processor, the signal comprising computer instructions stored in the memory. The measurement system performs the technical solutions provided in the third aspect and any one of its possible implementations when the processor executes the computer instructions described above; alternatively, the measurement system performs the solution provided in the fourth aspect above and any one of its possible implementations.

In a sixth aspect, the present application also provides a computer readable storage medium comprising computer instructions which, when run on an electronic device, cause a measurement system to perform the technical solution provided in the above third aspect and any one of its possible implementations; alternatively, the measurement system performs the solution provided in the fourth aspect above and any one of its possible implementations.

In a seventh aspect, the present application also provides a computer program product which, when run on a computer, causes a measurement system to carry out the solution provided in the above third aspect and any one of its possible implementations; alternatively, the measurement system performs the solution provided in the fourth aspect above and any one of its possible implementations.

It will be appreciated that the solutions provided in the second aspect to the seventh aspect provided in the present application may correspond to the first aspect and any possible design thereof, so that the beneficial effects that can be achieved are similar, and are not repeated here.

Drawings

FIG. 1 is a schematic diagram of a passive measurement scheme of polarization characteristics;

FIG. 2 is a schematic diagram of a measurement system according to an embodiment of the present disclosure;

Fig. 3 is a schematic diagram of a standard antenna pair according to an embodiment of the present disclosure;

fig. 4 is a logic schematic diagram of a standard antenna pair according to an embodiment of the present application;

fig. 5 is a schematic diagram of a configuration position of a standard antenna pair according to an embodiment of the present application;

fig. 6 is a schematic diagram of a standard antenna pair and a rotatable fixture according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of logic connection of a switching unit according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a logic connection of a measurement system according to an embodiment of the present disclosure;

fig. 9 is a flow chart of a method for measuring polarization characteristics according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a measurement system according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of logic connection between a polarization signal construction unit and an excitation unit according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a logic connection of a measurement system according to an embodiment of the present disclosure;

fig. 13 is a flow chart of a method for measuring polarization characteristics according to an embodiment of the present application;

fig. 14 is a flow chart of a method for measuring polarization characteristics according to an embodiment of the present application;

Fig. 15 is a schematic diagram of a system on chip according to an embodiment of the present application.

Detailed Description

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

The electronic device may implement wireless communication functions through an antenna configured therein. Correspondingly, the measurement of the antenna-related parameters is also a necessary procedure for assessing the wireless communication capabilities of the electronic device.

The antenna-related parameters may include, for example, polarization characteristics of the antenna.

In general, the polarization characteristics of an antenna may include linear polarization (linear polarization), circular polarization (circular polarization), and elliptical polarization (elliptic polarization).

Among them, the linear polarization may include vertical polarization (vertical polarization), horizontal polarization (horizontal polarization), and the like, depending on the direction of polarization. Circular polarization may include left-hand circular polarization (left-hand circular polarization), right-hand circular polarization (right-hand circular polarization), and the like. For different elliptical polarizations, the identification can be distinguished by parameters such as the axial ratio and the inclination angle of the elliptical polarizations.

In the following description, an antenna to be measured is disposed in an electronic device, and polarization characteristics of the antenna to be measured are measured.

It is understood that in the case where a plurality of antennas are provided in the electronic device, the antenna to be measured may be any one of the plurality of antennas.

At present, the measurement of the polarization characteristic of the antenna to be measured can be realized through a passive measurement scheme.

An electronic device is taken as an example of a mobile phone. Referring to fig. 1, an example of a passive measurement scheme is shown.

Generally, antennas in electronic devices are not often directly provided on the exterior surface of the electronic device. In this passive measurement scheme, the handset needs to be disassembled before starting the measurement in order to expose the feeding point of the antenna to be measured.

Then, the coaxial line is welded at the feed point of the antenna to be measured, and the coaxial line is used for feeding power to the antenna to be measured.

As shown in fig. 1, another port on the coaxial line other than the connection antenna feed point is provided with a terminal. The coaxial line is connected via a terminal to an excitation device capable of generating an excitation signal. The processing mode of damaging the mobile phone and welding the feeder line on the antenna for measurement can also be called as manufacturing the antenna in the mobile phone into a passive jig for measurement.

Thus, when the antenna to be measured is measured, the excitation device feeds an excitation signal to the antenna to be measured through the port and the coaxial line. So that the antenna to be measured radiates the excitation signal outwards in the form of electromagnetic waves.

It will be appreciated that the antenna to be tested may radiate the excitation signal outwards in the form of electromagnetic waves over the range of the operating frequency band. For example, the operating frequency band of the antenna to be measured includes 700MHz-960MHz. Correspondingly, after receiving the feed signal, the antenna to be tested can convert the excitation signal into electromagnetic waves with the frequency range of 700MHz-960MHz to radiate outwards.

In this passive measurement scheme, multiple signal receiving antennas may be configured at different locations around an electronic device (e.g., a cell phone). Each of the plurality of signal receiving antennas may have an operating frequency band that covers an operating frequency band of the antenna to be tested. Thus, after the antenna to be tested sends out the electromagnetic wave corresponding to the working frequency band, the signal receiving antenna can effectively receive the electromagnetic wave sent out by the antenna to be tested.

Because the positions of the different signal receiving antennas relative to the antenna to be tested are different, the characteristics of electromagnetic waves at the positions of the signal receiving antennas can be respectively reflected by the signals received by the different signal receiving antennas. The characteristic of the electromagnetic wave may include a polarization characteristic of the electromagnetic wave emitted from the antenna to be measured at a corresponding position.

Correspondingly, the measuring equipment arranged in the passive measuring scheme can analyze and determine the polarization characteristics of the positions of the signal receiving antennas when the antenna to be measured works according to the signals received by the signal receiving antennas.

The passive measurement scheme is exemplified by way of example in connection with the example of fig. 1.

As shown in fig. 1, in this example, the plurality of signal receiving antennas may include an antenna 11, an antenna 12, an antenna 13, and an antenna 14. In the xoy plane centered on the antenna to be measured, the antenna 11 may be located at position 1 for measuring the polarization characteristics of the antenna to be measured at position 1 when the antenna to be measured is in operation. Antenna 12 may be located at location 2 for measuring polarization characteristics at location 2 when the antenna under test is in operation. The antenna 13 may be located at position 3 for measuring the polarization characteristics of the antenna to be measured at position 3 when the antenna is in operation. The antenna 14 may be located at position 4 for measuring the polarization characteristics of the antenna to be measured at position 4 when the antenna is in operation.

Each signal receiving antenna may be connected to a measuring device for transmitting the received signal to the measuring device.

For example, the antenna 11 may transmit the received output signal 1 to a measuring device. The antenna 12 may transmit the received output signal 2 to the measuring device. The antenna 13 may transmit the received output signal 3 to the measuring device. The antenna 14 may transmit the received output signal 4 to the measuring device.

The measuring device can determine the polarization characteristics of the positions of the signal receiving antennas according to the received output signals and the excitation signals.

For example, the measuring device may determine the polarization properties of position 1 from the received output signal 1 in combination with the excitation signal. The measuring device can determine the polarization properties of the location 2 from the received output signal 2 in combination with the excitation signal. The measuring device can determine the polarization properties of the location 3 from the received output signal 3 in combination with the excitation signal. The measuring device can determine the polarization properties of the location 4 from the received output signal 4 in combination with the excitation signal.

As a possible implementation, for example, each signal receiving antenna comprises two linearly polarized antenna elements. The two linearly polarized antenna assemblies may be a vertically polarized antenna and a horizontally polarized antenna, respectively. Correspondingly, the signal received by each signal receiving antenna may include a horizontal component as well as a vertical component.

Taking the polarization characteristic of the position 1 as an example, the polarization characteristic is measured by the antenna 11.

During the measurement, an excitation signal is fed into the antenna to be measured. Correspondingly, the antenna to be tested can generate electromagnetic waves in the working frequency band to radiate outwards. The antenna 11 receives electromagnetic waves in this operating frequency band and converts them into corresponding output signals.

Specifically, the horizontal polarization component in the antenna 11 receives electromagnetic waves in the operating frequency band, and generates a horizontal component of the output signal 1. The measuring device can acquire the horizontal component of the output signal 1, and in combination with the excitation signal, generate a two-port isolation curve 1 of the two signals. The dual-port isolation curve 1 can embody the frequency response characteristic of the horizontal component at the position 1 when the antenna to be tested works.

Similarly, the vertical polarization component in antenna 11 receives electromagnetic waves in the operating frequency band, generating the vertical component of output signal 1. The measuring device can acquire the vertical component of the output signal 1, in combination with the excitation signal, to generate a two-port isolation curve 2 of the two signals. The dual-port isolation curve 2 can embody the frequency response characteristic of the vertical component at the position 1 when the antenna to be tested works.

Therefore, the measuring equipment can determine the polarization characteristic of the position 1 when the antenna to be measured radiates in the working frequency band according to the dual-port isolation curve 1 and the dual-port isolation curve 2.

For example, the polarization characteristics of 880MHz are measured for an operating band including 700MHz-960MHz band. The measuring equipment can determine the frequency response parameters corresponding to the two dual-port isolation curves respectively under the frequency point corresponding to 880MHz according to the dual-port isolation curve 1 and the dual-port isolation curve 2. Further, the amplitude and phase differences between the horizontal and vertical components of the excitation signal and the output signal 1 at 880MHz are determined based on the frequency response parameters. The measuring device can determine the polarization characteristic of the position 1 when the antenna to be measured works at 880MHz according to the amplitude difference and the phase difference.

Based on the passive measurement scheme, the measurement device can also determine the polarization characteristic of the position 2 according to the output signal 2 acquired by the antenna 12, similar to the measurement mode of the polarization characteristic of the position 1 corresponding to the antenna 11; determining polarization characteristics of the position 3 according to the output signal 3 acquired by the antenna 13; from the output signal 4 acquired by the antenna 14, the polarization characteristics of the location 4 are determined.

It can be understood that, because the feed source is externally connected, the working frequency band of the antenna to be tested can include a transmitting frequency band and a receiving frequency band.

However, this implementation of the scheme shown in fig. 1 also presents significant problems.

First, before measurement, coaxial wires and terminals need to be soldered in the electronics for feeding in excitation signals. Such irreversible destruction of the electronic device is obviously to be avoided as much as possible.

Secondly, due to the welding of the coaxial line and the terminal, the radiation environment near the antenna to be tested is different from the environment of the whole machine during operation, thereby influencing the normal operation of the antenna to be tested. And thus the polarization characteristic measurement accuracy is lowered.

In order to avoid the problems, the scheme provided by the embodiment of the application can realize the measurement of the polarization characteristic of the antenna to be measured under the condition of not damaging the integrity of the electronic equipment.

In the following description, corresponding to the passive measurement scheme shown in fig. 1, in the implementation of the scheme provided in the embodiment of the present application, an electronic device may autonomously control an antenna to be measured to perform signal reception or transmission without an external feed source, so the implementation may be referred to as an active measurement scheme.

The following describes the schemes provided in the embodiments of the present application in detail with reference to the accompanying drawings.

It should be noted that the antenna to be tested in the embodiments of the present application may be disposed in an electronic device. The electronic device may include at least one of a cell phone, a foldable electronic device, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (mobile personal computer, UMPC), a netbook, a cellular telephone, a personal digital assistant (personal digital assistant, PDA), an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, an artificial intelligence (artificial intelligence, AI) device, a wearable device, a vehicle-mounted device, a smart home device, or a smart city device. The embodiment of the application does not particularly limit the specific type of the electronic device.

Referring to fig. 2, a schematic diagram of a measurement system according to an embodiment of the present application is provided.

As shown in fig. 2, the measurement system may include: at least one standard antenna pair 210, a switching unit 220, an analysis unit 230, a control unit 240, and a rotatable fixture 250.

Each of the at least one standard antenna pair 210 is respectively connected to the switching unit 220, so that when different paths of the switching unit 220 are conducted, signals of different standard antenna pairs 210 can be transmitted to other unit modules through the switching unit 220. The switching unit 220 is connected to the analyzing unit 230. The analysis unit 230 is connected to the control unit 240. The switching unit 220 is further connected to the control unit 240, so that the switching unit 220 controls the conduction of different paths under the control of the control unit 240.

The rotatable jig 250 is connected to the control unit 240 so that the rotatable jig 250 rotates under the control of the control unit 240.

It should be noted that, the composition shown in fig. 2 does not limit the solution provided in the embodiment of the present application. In other embodiments, each unit assembly as shown in fig. 2 may be partially or entirely integrated in the same module, or any unit assembly as shown in fig. 2 may be replaced by a unit module having similar functions as a plurality of other modules.

In some implementations, the polarization characteristics of each frequency point in the transmitting frequency band of the antenna to be tested can be measured by the cooperation of the at least one standard antenna pair 210, the switching unit 220, the analyzing unit 230, the control unit 240 and the rotatable clamp 250.

The implementation and operation mechanism of each unit module are described below.

In the present application, the at least one standard antenna pair 210 may include standard antenna pairs 210_1 to 210—n. Wherein n is an integer greater than or equal to 1. In case n is equal to 1, then 1 standard antenna pair may be included in the measurement unit.

In some embodiments, each of the at least one standard antenna pair 210 may have the same or similar composition. The operating frequency band of each standard antenna pair 210 may cover the operating frequency band of the antenna under test.

In this example, two antennas may be included for any of the standard antenna pairs 210_1 to 210—n. For example, referring to fig. 3, for a standard antenna pair 210, an antenna 211 and an antenna 212 may be included. The standard antenna pair 210 may be any one of the standard antenna pairs 210_1 to 210—n.

In the example of fig. 3, the antenna 211 and the antenna 212 may have different polarization characteristics. Illustratively, the antenna 211 and the antenna 212 may each be linearly polarized antennas. The linear polarization directions of the two antennas may be different.

For example, the linear polarization directions of the two antennas may be orthogonal to each other. As another example, the polarization directions of the two antennas may be at any one of parallel and orthogonal angles.

Take the orthogonal polarization directions of the antenna 211 and the antenna 212 as an example. In some implementations, the antenna 211 may be horizontally disposed, configured as a horizontally polarized antenna. Correspondingly, the antenna 212 may be vertically disposed, configured as a vertically polarized antenna. Optionally, the centers of antenna 211 and antenna 212 coincide.

Thus, the antenna 211 may be used to obtain a horizontal component (e.g., referred to as a horizontally polarized signal) of the electromagnetic wave at a location corresponding to the standard antenna pair 210. The antenna 212 may be used to obtain a vertical component (e.g., referred to as a vertically polarized signal) of the electromagnetic wave at the location corresponding to the standard antenna pair 210.

In some embodiments, the n standard antenna pairs (i.e., 210_1-210—n) may all have the composition shown in fig. 3. Referring to fig. 4, a standard antenna pair 210_1 may include an antenna 211_1 and an antenna 212_1. The standard antenna pair 210_2 may include an antenna 211_2 and an antenna 212_2. By analogy, the standard antenna pair 210_n may include an antenna 211_n and an antenna 212_n.

It should be noted that, in the present application, in the case where a plurality of standard antenna pairs are included in the measurement system (i.e., n is greater than or equal to 2), the plurality of standard antenna pairs and the antenna to be measured may be configured on the same plane. Different standard antenna pairs are located in different locations.

In some embodiments, the plurality of standard antenna pairs may be respectively arranged on the same circle (or ellipse) circumference. The included angles between any two adjacent standard antennas and the circle center are the same.

As an example, n is 4. Reference is made to fig. 5. The measurement system may include 4 standard antenna pairs. The 4 standard antenna pairs may include standard antenna pair 210_1 through standard antenna pair 210_4.

As shown in fig. 5, the 4 standard antenna pairs may each be located on one circumference of the xoz plane. In this example, the center positions of the 4 standard antenna pairs may correspond to the 4 positions of the 12 o 'clock direction, the 3 o' clock direction, the 6 o 'clock direction, and the 9 o' clock direction on the circumference, respectively.

By the arrangement of the standard antenna pairs as shown in fig. 5, the measurement system can measure the horizontal polarization signal and the vertical polarization signal at 4 positions (e.g., 12 o 'clock, 3 o' clock, 6 o 'clock, and 9 o' clock on the circumference) in the space through the 4 standard antenna pairs, respectively.

Thus, the measurement of the horizontal polarization signal and the vertical polarization signal of each position of the antenna to be measured in the xoz plane can be realized.

In this application, a rotatable fixture 250 may also be provided in the measurement system. The rotatable clamp 250 may have a different plane of rotation than the plane xoz. For example, the plane of rotation of the rotatable clamp 250 is perpendicular to the plane xoz, i.e., plane xoy.

In some implementations, the center of the rotatable clamp 250 coincides with the center of the circle enclosed by the standard antenna pair.

Referring to fig. 6, the rotatable clamp 250 may include a clamping assembly and a rotating assembly. The clamping assembly is fixedly connected with the rotating assembly.

A control port may be configured on the rotatable clamp 250. The control port may be coupled with a gesture control port of the control unit 240. Such that the rotatable clamp 250 (e.g., a rotating component of the rotatable clamp 250) receives attitude control information through the control port. The rotation assembly may be rotated along the xoy plane according to the attitude control information under the control of the control unit 240. Correspondingly, as the rotating assembly rotates, the clamping assembly may also rotate within the xoy plane.

The clamping assembly can be used for clamping an electronic device provided with an antenna to be tested. Thus, the control unit 240 may rotate the clip assembly, and the electronic device clipped on the clip assembly, in the xoy plane by controlling the rotation assembly to rotate in the xoy plane.

Taking a display screen of the electronic device as a reference, an xyz coordinate system is taken as an example. In the initial state of the rotating assembly, the display screen of the electronic device faces outwards. The plane of the display screen is xoz. And the y axis is inward perpendicular to the display screen.

Thus, for each rotation of the rotating assembly, the xoz plane rotates correspondingly, and the z-coordinate, x-and y-coordinates of each standard antenna pair in the coordinate system are unchanged.

Thus, the fixed arrangement of the standard antenna pairs in the xoz planes, in conjunction with the rotation of the rotating assembly in the xoy plane, enables the acquisition of horizontal polarization signals and vertical polarization signals for each spatial location in the three-dimensional coordinate system through each standard antenna pair.

In other descriptions, the xyz coordinate system described above may be replaced by a spherical coordinate system。

And when the rotating assembly is in an initial state, the display screen of the electronic equipment faces outwards. The initial position may correspond toThe rotating assembly rotates clockwise, +.>Gradually increasing. Corresponds to the xyz coordinate system, < >>May correspond to an angle of rotation in the xoy plane. />The angle may be used to indicate the angle at which the standard antenna pair is located in the xoz plane, and the line between the center of the coordinate system, as compared to the xoy plane. r is the radius of the circumference enclosed by the standard antenna pair.

Thus, each time the rotatable clamp 250 rotates, the standard antenna pair can acquire the new attitudeUnder the angle, different- >The angle corresponds to the horizontal polarization signal and the vertical polarization signal of the spherical surface position.

It will be appreciated that in other embodiments, the greater the number of standard antenna pairs, for eachThe corresponding tangential plane can be used for measuring and acquiring horizontal polarization signals and vertical polarization signals at more positions. And the control unit 240 controls the measured ++as the rotation angle of the rotatable jig 250 is smaller each time>The more corresponding sections are, i.e. more positions of horizontal polarization signals and vertical polarization signals can be obtained.

In the example as in fig. 2, the measurement system may further comprise a switching unit 220 coupled to the standard antenna pair 210.

The switching unit 220 may include 2n input ports and 2 output ports, for example.

For example, the 2n input ports may include n input ports a. Each of the n input ports a may be coupled to an antenna 211 comprised by one standard antenna pair 210.

The 2n input ports may also include n input ports B. Each of the n input ports B may be coupled to an antenna 212 comprised by one standard antenna pair 210.

Referring to fig. 7, n input ports a include input ports A1 to An, and n input ports B include input ports B1 to Bn as examples.

The antenna 211_1 may be coupled to the input port A1. The antenna 211_2 may be coupled to the input port A2. Similarly, the antenna 211—n may be coupled to the input port An.

The antenna 212_1 may be coupled to the input port B1. The antenna 212_2 may be coupled to the input port B2. Similarly, the antenna 212_n may be coupled to the input port Bn.

In this example, the switching unit 220 may further include two output ports. For example, the two output ports may include an output port Aout, and an output port Bout.

The output port Aout may be in conduction with any one of the n input ports a under different operating conditions. The output port Bout may be conductive with any of the n input ports B. The antenna 211 coupled to the input port a, which is conductive to the output port Aout, and the antenna 212 coupled to the input port B, which is conductive to the output port Bout, are included in the same standard antenna pair.

Thus, at the same time, the output ports Aout and Bout are turned on with the input ports receiving the two different polarization signals of the same standard antenna pair. So that by means of the switching unit 220 a separation of the two different polarized signals of one standard antenna pair from the signals received by the other standard antennas can be achieved.

For example, in the operating condition shown in fig. 7, the output port Aout is in conduction with the input port A1, and the output port Bout is in conduction with the input port B1. Thereby causing the horizontal polarization signal and the vertical polarization signal measured at the corresponding positions of the standard antenna pair 210_1 to be acquired by the switching unit 220.

In the example as in fig. 7, the switching unit 220 may be configured with a switching control port. The switch control port may be configured to receive a switch control command. For example, the switch control port may be coupled to the control unit 240 so that the switch unit 220 receives a switch control command from the control unit 240. The switch control command is used for indicating the output port Aout/output port Bout to be conducted with different input ports. Thus, the measurement signals of the standard antenna pairs at all positions on the xoz plane are obtained under the current posture.

In some embodiments of the present application, the switching unit 220 may also be referred to as a programmable switch box.

In some implementations, the switching unit 220 and the standard antenna pairs 210_1-210—n, the rotatable fixture 250 may be integrated in the same device. For example, the above-described cell components may be integrated in an active measurement (OTA) darkroom.

In the example as in fig. 2, the switching unit 220 is coupled with the analysis unit 230.

For example, referring to fig. 8, the analysis unit 230 may be configured with an input port C1 and an input port C2. The input port C1 is coupled to the output port Aout, and the input port C2 is coupled to the output port Bout.

Thus, at some point during the operation of the measurement system, the analysis unit 230 may obtain the horizontal polarization signal and the vertical polarization signal measured by one standard antenna pair through the input port C1 and the input port C2.

In this example, the analysis unit 230 may be configured to determine an amplitude ratio and a phase difference of the horizontal polarization signal and the vertical polarization signal according to the inputted horizontal polarization signal and the vertical polarization signal.

As an example, electromagnetic waves emitted by an antenna to be tested are taken as. Thus, by either standard antenna pair, the acquired signal may include: />And。

The analysis unit 230 may be based on the inputAndAnd determining the amplitude ratio of the antenna to be measured at the current position as x/y. Furthermore, the analysis unit 230 may also be based on the input +.>And +.>Determining the phase difference of the antenna to be measured at the current position as +.>。/>

Therefore, the analysis unit 230 can obtain the corresponding amplitude ratio and phase difference of the current position of the standard antenna pair conducted with the output port Aout/output port Bout in the switching unit 220.

Then, the switching unit 220 may switch the other input ports to be conductive with the output ports under the control of the control unit 240. Thereby enabling the analysis unit 230 to calculate and obtain the amplitude ratio and the phase difference corresponding to the positions where the other standard antennas are located.

For example, at time T1, in switching unit 220, input port A1 is turned on with output port Aout, and input port B1 is turned on with output port Bout. Thus, the analysis unit 230 determines a corresponding set of data, such as (amplitude ratio 11, phase difference 11), for the position L1 based on the input signal. The location L1 may be the spherical coordinate system of the standard antenna pair 210_1 formed by the antenna 211_1 and the antenna 212_1Upper position.

Thereafter, at time T2, in the switching unit 220, the input port A2 is turned on with the output port Aout, and the input port B2 is turned on with the output port Bout. Thus, the analysis unit 230 determines a corresponding set of data, e.g., (amplitude ratio 12, phase difference 12), for the position L2 from the input signal. The location L2 may be the spherical coordinate system of the standard antenna pair 210_2 composed of the antenna 211_2 and the antenna 212_2Upper position.

Similarly, at time Tn, the switching unit 220 turns on the input port An and the output port Aout, and turns on the input port Bn and the output port Bout. Thus, the analyzing unit 230 determines a corresponding set of data of the position Ln, such as (amplitude ratio 1n, phase difference 1 n), based on the input signal. The position Ln may be the spherical coordinate system of the standard antenna pair 210—n composed of the antenna 211—n and the antenna 212—n Upper position.

It will be appreciated that in some embodiments, one is accomplishedAfter the signals of all the standard antenna pairs of the angle-corresponding plane are collected, the analysis unit 230 may also obtain other ++through the switching unit 220>N sets of data corresponding to n standard antennas of the plane corresponding to the angle.

Thereby toFor example, at completion of all +.>After the signals of all the standard antenna pairs of the angle-corresponding plane are acquired, the switching unit 220 can acquire +.>Group data. Each set of data may include an amplitude ratio and a phase difference for one location.

In some embodiments, the analysis unit 230 may compare this via the output port C3The group data is transmitted to the control unit 240 for processing.

It should be noted that in some implementations, the analysis unit 230 may transmitIn addition to the group data, time information of receiving the respective data is transmitted to the control unit 240. In this way, the control unit 240 may control the on-path of the switching unit 220 according to the corresponding time, and determine the standard antenna group corresponding to the group data. And then according to the standard antenna group, determining the corresponding relation between each data and each position on the spherical space.

In other implementations, the analysis unit 230 may also transmit the amplitude ratio and the phase difference for each location to the control unit 240 immediately. In this way, the control unit 240 may determine the position of the currently received data corresponding to the spherical space according to the time when each group of data is received and/or the receiving sequence of each group of data.

As a specific implementation, the analysis unit 230 may be implemented by a vector network analyzer (Vector Network Analyzer, VNA).

The control unit 240 receives the same through the input port D1Group data. The control unit 240 can be based on this +.>And (3) group data, and determining polarization characteristics corresponding to the positions.

The control unit 240 may be directed to, for exampleAnd each group of data determines the polarization characteristic of the antenna to be tested at the position according to the amplitude ratio and the phase difference corresponding to the position.

As an example, the control unit 240 may determine that the polarization characteristic of the position is circular polarization according to the amplitude ratio equal to 1 and the phase difference is 90 ° or-90 °.

The control unit 240 may determine that the polarization characteristic of the position is linear polarization according to the phase difference of 0 ° or 180 ° or-180 °.

And in the case where the above condition is not satisfied, that is, the amplitude ratio is not equal to 1; alternatively, in the case where the amplitude ratio is equal to 1 and the phase difference is not 0 ° or 180 ° or-180 ° or 90 ° or-90 °, the control unit 240 may determine that the polarization characteristic of the position is elliptical polarization.

Alternatively, the control unit 240 may determine the axial ratio and the inclination angle of the elliptical polarization of the current position according to the amplitude ratio and the phase difference in the case where the polarization characteristic of the position is the elliptical polarization. Wherein, the axial ratio of the elliptical polarization can be determined according to the amplitude ratio, and the inclination angle can be determined according to the amplitude ratio and the phase difference.

Needs to be as followsIt is noted that, in the above description, the control unit 240 acquires from the analysis unit 230The group amplitude ratio and the phase difference determine polarization characteristics at different positions as an example. In other embodiments, the process of determining polarization characteristics may also be performed in the analysis unit 230. Thus, the analysis unit 230 can directly add +.>The polarization characteristics corresponding to the respective positions are transmitted to the control unit 240. The embodiment of the application is not limited to the specific implementation of the above-mentioned process.

In the following examples, a method for measuring polarization characteristics of an antenna to be measured in an electronic device in a transmission scenario by the measurement system is illustrated with reference to the descriptions of the respective components in the measurement system in fig. 2 to 8.

It can be understood that, when a plurality of antennas are configured in the electronic device and polarization characteristics of each antenna need to be measured, each of the plurality of antennas may be configured as an antenna to be measured, and the polarization characteristics of the antenna may be determined according to the implementation of the scheme provided in the embodiment of the present application.

As shown in fig. 9, the method for measuring polarization characteristics may include:

s901, generating a first posture control signal to rotate the rotatable jig to the first posture.

For example, the control unit may generate the first attitude control signal. The first attitude control signal may be transmitted to the rotatable clamp through the attitude control port.

Correspondingly, the rotatable clamp can adjust the rotation angle in the current xoy plane according to the received first gesture control signalTo a corresponding angle value. Thereby causing the posture of the electronic device equipped with the antenna to be measured to be adjusted to the first posture.

In a first postureThe control signal indicates that the rotatable clamp is to be rotatedIs exemplified by the pose of (2).

The rotatable clamp can rotate the current xoy plane according to the received first gesture control signalAdjusted to 0 degrees. Thus, the first gesture of the electronic device corresponding to the first gesture control signal may be: the display screen is parallel to the paper surface and faces outwards.

In some implementations, the first pose corresponding to the first pose control signal may be an initial pose of the rotatable clamp. Correspondingly, when the measurement of the polarization characteristic is started, a control unit in the measurement system can carry the first attitude control signal through an initialization command to control the rotatable clamp to enter an initialization state.

Indicating that the rotatable clamp is to be rotated with the first attitude control signal Is exemplified by the pose of (2).

The rotatable clamp can rotate the current xoy plane according to the received first gesture control signalAdjusted to 90 degrees. Thus, the first gesture of the electronic device corresponding to the first gesture control signal may be: the display screen is perpendicular to the paper surface, and the outward direction of the display screen is the direction along the right direction of the paper surface or the left direction along the paper surface.

It will be appreciated that in other embodiments of the present application, the first attitude corresponding to the first attitude control signal may also correspond to other angles。

It should be noted that, in some embodiments of the present application, before performing this S901, the electronic device configured with the antenna to be tested may be clamped on the rotatable clamp. The electronic device may be configured to control the antenna to be tested to operate in the corresponding first transmission frequency segment for signal transmission.

The first transmitting frequency segment comprises a frequency point for measuring polarization characteristics currently. The first transmit frequency band may be included in a transmit frequency band when the electronic device is operating normally.

In some implementations, the electronic device may be manually controlled to operate in an operating frequency band corresponding to the antenna to be tested before the electronic device is clamped on the rotatable clamp.

In other implementations, the control unit maintains a wireless/wired connection with the electronic device. The control unit sends a corresponding communication instruction to the electronic equipment so that the electronic equipment calls the antenna to be tested to emit electromagnetic waves.

Thus, the electronic equipment can perform autonomous operation of the first transmitting frequency band under the first gesture. In this case, the corresponding current first pose in the current spherical coordinate system can be realized through the set standard antenna pairsCorner, and +.A. for each standard antenna corresponds to the corresponding position>The polarization characteristic is measured at the angle corresponding position.

Exemplary, corresponding with the current first gestureThe angle is->The positions of the standard antenna pairs are corresponding to>The angle is，/>As an example.

After the execution of this S901, the posture of the electronic device is made to adjust toAfter the corresponding posture, the +_ in the posture can be realized>Measurement of polarization characteristics at n positions.

The specific implementation steps are described with reference to the following.

By way of example, through implementation of S902-S905, measurement of polarization characteristics of one of n locations may be accomplished. By the logic configuration of the subsequent steps, the measurement system can realize the measurement of the polarization characteristics of other positions in the n positions by using a scheme similar to that of S902-S905 through cyclic judgment.

S902, a first switching control signal is generated to make the switching unit operate in a first state.

Wherein the first switching control signal operates in response to the switching unit being instructed to switch to the first state.

The switching unit may be in different conducting states at different times in connection with the description of fig. 7 and 8. Any of the different on states may correspond to: one input port a is conducted with the output port Aout; the input port B corresponding to the turned-on input port a is turned on with the output port Bout.

In this example, the first state operation is included in the different conductive states described above. In the first state, the input port on the matching unit to which the first standard antenna pair is coupled may be conductive to the output port.

For example, the first standard antenna pair is taken as the standard antenna pair 210_1. The first standard antenna pair 210_1 may include a horizontally polarized antenna 211_1 and a vertically polarized antenna 212_1. The first standard antenna pair 211_1 is connected to the input port A1 of the switching unit, and the first standard antenna pair 212_1 is connected to the input port B1 of the switching unit.

The control unit may control the first state of the switching unit to correspond to: the input port A1 is in conduction with the output port Aout, and the input port B1 is in conduction with the output port Bout.

In this way, in the first state, the horizontally polarized signal acquired by the horizontally polarized antenna 211_1 in the standard antenna pair 210_1 can enter the switching unit through the input port A1 and be output through the output port Aout.

In the first state, the vertically polarized signal collected by the vertically polarized antenna 212_1 in the standard antenna pair 210_1 may enter the switching unit through the input port B1 and be output through the output port Bout.

Taking the coordinates of the central position of the first standard antenna pair 210_1 on a spherical coordinate system asAs an example. Then in this S902, the +.>A horizontal polarization signal and a vertical polarization signal at corresponding positions. />

S903, acquiring a first horizontal polarization signal and a first vertical polarization signal acquired by a first standard antenna pair.

The analysis unit may obtain the horizontal polarization signal output from the output port Aout through the input port C1. The analysis unit may obtain the horizontal polarization signal output by the output port Bout through the input port C2.

In combination with the example in S902, in the first posture, the first horizontal polarization signal may be a horizontal polarization signal acquired correspondingly by the antenna 211_1. The first vertical polarization signal may be a vertical polarization signal acquired by the antenna 212_1.

It will be appreciated that the first horizontally polarized signal and the first vertically polarized signal may correspond to a spherical coordinate systemSignals acquired at corresponding positions.

S904, determining relevant parameters of the first position according to the first horizontal polarization signal and the first vertical polarization signal.

The first position is the position of the center of the first standard antenna pair under the spherical coordinate system. For example, the first position may be the position of the center of the standard antenna pair 210_1, i.e。

In this example, the relevant parameters of the first location include an amplitude ratio and a phase difference of the first horizontally polarized signal and the first vertically polarized signal.

In combination with the foregoing example, a scheme for determining polarization characteristics from an input signal is described. The analysis unit may determine the amplitude ratio and the phase difference of the two signals from the first horizontally polarized signal and the first vertically polarized signal. For example, the amplitude ratio corresponding to the first position is a first amplitude ratio, and the phase difference is a first phase difference.

In some implementations, the analysis unit may store in the cache a correspondence of the first location to the first amplitude ratio and the first phase difference. For example, the correspondence may be stored as: [A first amplitude ratio, a first phase difference ]。

It should be noted that, the first horizontal polarization signal and the first vertical polarization signal may be continuous signals at a frequency segment corresponding to the operating frequency band.

Thus, taking the current sample measurement of the first frequency in the operating frequency band as an example.

The analysis unit may obtain the frequency response characteristics of the two signals under the frequency point corresponding to the first frequency according to the first horizontal polarization signal and the first vertical polarization signal, so as to determine the relevant parameter of the first position under the first frequency.

It can be understood that when the sampling interval is smaller and measurement of polarization characteristics of a plurality of frequencies in the working frequency band is required, the analysis unit may determine, for each frequency to be sampled and measured, the frequency response characteristics of the corresponding frequency points in the first horizontal polarization signal and the first vertical polarization signal, so as to obtain relevant parameters corresponding to each frequency.

In the following description, the polarization characteristic of the first frequency is measured as an example. Thus, the determined parameter associated with the first location (e.g., the first amplitude ratio, the first phase difference, etc.) may be at the first frequency,amplitude ratio and phase difference of the corresponding positions.

S905, determining polarization characteristics of the first position according to the related parameters of the first position.

Taking the control unit to determine the polarization characteristics as an example.

In some embodiments, the analysis unit may send the correspondence between the first position and the first amplitude ratio and the first phase difference to the control unit, so that the control unit performs subsequent processing.

In other embodiments, the information about the first location may be replaced by a corresponding identifier of the first standard antenna pair. Thus, based on the corresponding identification of the first standard antenna pair, the control unit can determine that the first amplitude ratio and the first phase difference are at the first position (e.g) Relevant parameters of the signals are collected.

In this example, the control unit may determine the polarization characteristic of the first location from the first amplitude ratio and the first phase difference. The polarization characteristic may be a polarization characteristic exhibited at the first location when the antenna under test is in operation.

In combination with the foregoing, in some embodiments, the first amplitude ratio is equal to 1 and the first phase difference is 90 ° or-90 °, the polarization characteristic of the first location is circular polarization. In other embodiments, the first phase difference is 0 ° or 180 ° or-180 °, and the polarization characteristic of the first location is linear polarization regardless of the first amplitude ratio. In other embodiments, the first amplitude ratio is not equal to 1; alternatively, the first amplitude ratio is equal to 1 and the first phase difference is not 0 ° or 180 ° or-180 ° or 90 ° or-90 °, the polarization characteristic of the first location being elliptical polarization.

Alternatively, when the polarization characteristic of the first position is elliptical polarization, the control unit may further determine an axial ratio and an inclination angle of the elliptical polarization corresponding to the first position according to the first amplitude ratio and the first phase difference.

Thus, measurement of the polarization characteristic of the first position can be completed. In some implementations, the control unit may store the first location and the measurement of the corresponding polarization characteristic.

For example, the polarization characteristic of the first position is exemplified as the line polarization. The control unit may store [ [Linear polarization]Is a measurement of (a). It will be appreciated that in this example, each standard antenna pair may be rounded with the rotatable clamp being central, and that r measured at each location is the same. Thus, in some implementations, the control unit may store location information that is identified only by a horizontal angle and a vertical angle. For example, the control unit may store [ ]>Linear polarization]Is a measurement of (a).

In some embodiments of the present application, the processing of S902-S905 may also be referred to as performing a measurement of the polarization characteristic of the first standard antenna for the corresponding first location.

The measurement system may then measure polarization characteristics at other locations by the following steps.

S906, judging whether measurement of all positions in the current gesture is completed or not.

In the application, under the condition that all positions under the current gesture can include that the current gesture is unchanged, all the positions corresponding to the standard antennas are measured.

As a possible implementation, the control unit may configure the traversal identifier corresponding to a standard antenna pair to be 1 every time the polarization characteristic of the corresponding position of the standard antenna pair is acquired.

For example, in case the standard antenna pair 210_1 completes the measurement, the control unit may then compare the standard antenna pair 210_1 orThe traversal flag of the corresponding location is configured from 0 to 1.

Similarly, after all the measurements are completed, the traversal identifier of each standard antenna pair (or the corresponding position of each standard antenna pair) is configured to be 1.

In the case where the traversal flag of all the positions is 1, it indicates that the measurement of all the positions in the current posture is completed.

As yet another possible implementation, the control unit may determine whether all the standard antenna pairs have completed one traversal according to the number of positions corresponding to the polarization characteristics that have been acquired.

For example, every time the control unit acquires polarization characteristics of one position, the number of traversals is increased by 1. In the case where the number of traversals reaches n (i.e., the number of standard antenna pairs), the correspondence indicates that the measurement of all positions in the current pose is completed.

As a further possible implementation, the control unit may determine whether all standard antenna pairs have completed one traversal based on the issued switching control signal.

For example, the control unit may be preconfigured with a handover control signaling table. The handover control signaling table may include n handover control signals. Each switching control signal is used for indicating the switching unit to work in one state. Each state corresponds to a signal input by a standard antenna pair and output from the output terminal of the switching unit.

The control unit may issue the next switching control signal in the switching control signaling table to the switching unit after each completion of the determination of the polarization characteristic of one position shown in S902-S905. The process of S902-S905 is repeated to obtain polarization characteristics of n standard antennas for the corresponding positions.

In this way, when the control unit completes polling of all the switching control signals in the switching control signaling table and acquires polarization characteristics in all states of the switching unit, it means that all the standard antenna pairs complete one traversal.

In the present application, S907 is performed without completing the measurement of all the positions in the current posture.

In the case where the measurement of all the positions in the current posture is completed, S908 is performed.

S907, the polarization characteristic of the second standard antenna corresponding to the second position is measured.

The second standard antenna pair is any one of n standard antenna pairs in a standard sky pair which is not measured under the current gesture.

In connection with the description in S902-S905, the execution of S907 may be referred to the measurement scheme of the polarization characteristic of the first standard antenna for the corresponding first location.

For example, the control unit in the measurement system may generate a second switching control signal by means of which the switching unit is controlled to operate in the second state. In the second state, the second standard antenna pair coupled to the switching control unit is respectively conducted with the two output ports of the switching control unit. The analysis unit obtains a second horizontal polarization signal and a second vertical polarization signal acquired by the second standard antenna pair, and determines relevant parameters of a second position according to the second horizontal polarization signal and the second vertical polarization signal. For example, a second phase difference and a second amplitude ratio corresponding to the second location are obtained. The second position may be the center of the second standard antenna pair, a position in a spherical coordinate system (e.g). The control unit may then determine the polarization characteristic of the second location based on the relevant parameters of the second location.

Thus, the control unit can store [ sic ]Polarization characteristics of the second position]Is a measurement of (a).

In this application, after the execution of S907 is completed, the execution of S906 may be re-triggered. So as to judge whether the measurement of the polarization characteristics of all the standard antenna pairs is completed or not under the current posture of the rotatable clamp.

If the standard antenna pair still exists and the measurement is not completed, S907 is repeatedly executed, and the polarization characteristics of any one of the remaining standard antenna pairs at the corresponding position are measured.

And the control unit can acquire the polarization characteristics of all the positions which can be acquired under the current posture (such as the first posture) of the rotatable clamp.

For example, the corresponding polarization characteristic measurement result in the first posture may include:

[measuring the obtained polarization characteristics]，[/>Measuring the obtained polarization characteristics]，……，[Measuring the obtained polarization characteristics]。

S908, judging whether measurement under all postures is completed.

And acquiring polarization characteristics of the positions of the standard antenna pairs in all the postures, and completing traversal of all the standard antenna pairs in all the postures.

In some embodiments, the control unit may be preconfigured with gesture control signaling tables corresponding to the plurality of gestures. The attitude control signaling table may include a plurality of attitude control information. Each of the attitude control information is for controlling the rotatable jig to rotate to a certain attitude. Corresponding rotatable clamp under different postures The angles are different.

Thus, after all the attitude control information is polled and the corresponding attitudes of all the attitude control information are acquired, the traversal of all the standard antenna pairs in all the attitudes is completed.

In the present application, S909 is performed when there is at least one gesture for which measurement is not completed. Correspondingly, in the case where all the poses complete the measurement, the measurement is ended, and S910 is executed.

S909, generating a second attitude control signal to cause the rotatable clamp to rotate to the second attitude.

Wherein the second attitude control signal is different from the first attitude control signal, the second attitude being any one of the at least one attitude for which measurement has not been completed.

The control unit may control the rotatable jig to rotate to the second posture by the second posture control signal. Correspondingly, the front surface of the antenna to be measured on the electronic equipment rotates relative to the spherical coordinate system,angle change.

For example, the second gesture corresponds toThe angle is->。

After rotating to the second pose, the measurement system may trigger execution S902-S906. Thereby realizingAnd in the second posture after the angle change, measuring polarization characteristics of the positions of all the standard antennas on the tangential plane of the spherical coordinate system.

In combination with the descriptions in S902-S907, after completing the measurement of the second posture, the control unit may obtain the measurement result of the polarization characteristic corresponding to the second posture, which may include:

In some embodiments, after the second pose is completed, all the polarization characteristics of the positions where the standard antennas are located are measured, the determination of S908 may be triggered to be performed, that is, whether there is still a pose that is not traversed.

And (3) circulating in the way until all the standard antennas perform corresponding measurement under all the postures.

S910, measurement is completed.

Alternatively, in the case where the measurement is completed, the control unit may store polarization characteristics corresponding to the respective positions in all the attitudes.

Taking m pre-configured poses as an example. Through the measurement process of S901-S909, the control unit can obtainPolarization characteristics of individual sites. This->The positions are distributed in positions on a spherical coordinate system respectively.

In some implementations, the control unit may be based on theAnd simulating and drawing 3D images and displaying the polarization characteristics of the antenna to be tested in all directions on a display screen configured or coupled with the control unit.

In other implementations, the control unit may output in the form of a table or other dataPolarization characteristics of individual sites.

Therefore, the method can accurately measure the polarization characteristics of the antenna to be measured in the electronic equipment under the emission scene on the basis of the measurement system shown in fig. 2 on the premise of not damaging the electronic equipment.

The measurement system provided by the embodiment of the application can also be used for supporting the measurement of the polarization characteristic of the antenna to be measured in the receiving frequency band in the electronic equipment.

As an example, refer to fig. 10 in conjunction with fig. 2 and the description of the various components. In this example, the measurement system may further include an excitation unit 260 and a polarization signal construction unit 270.

The signal output port of the excitation unit 260 may be coupled to the input port of the polarized signal construction unit 270. The two output ports of the polarization signal construction unit 270 may be coupled to the two output ports of the switching unit, respectively. In addition, the connection relation of the other components as in fig. 10 may refer to the description in the foregoing fig. 2 to 8.

The excitation unit 260 and the polarization signal construction unit 270 which are newly added are respectively exemplified as follows.

The excitation unit 260 may be used to generate an excitation signal. For example, the excitation unit 260 may be implemented by a component such as a heald meter, a signal generator, or the like. In the measurement of the reception frequency bands of different standards (e.g., WCDMA/TDSCDMA/CDMA in 3G, TDD/FDD in 4G, 5GNR, etc.), the excitation unit 260 with the signal generating capability of the corresponding standard may be used to configure the measurement system.

The excitation unit 260 may include a signal output port, and a control port. The excitation unit 260 transmits the generated excitation signal to the outside (e.g., the polarized signal construction unit 270) through a signal output port. The excitation unit 260 receives an excitation control signal through a control port. In some embodiments, the excitation control signal may be sent by the control unit 240.

Correspondingly, the excitation unit 260 may generate an excitation signal of a corresponding power (e.g., the target power P0) according to the excitation control signal. In some implementations, the excitation signal may be a continuous sine wave signal.

The polarization signal construction unit 270 may be configured to perform targeted modulation processing on the excitation signal generated by the excitation unit 260. Wherein the modulation process may include at least one of: power modulation, phase modulation, amplitude modulation.

For example, referring to fig. 11, the polarization signal construction unit 270 may include a power divider 271, an adjustable attenuator 272, and an adjustable phase shifter 273, which are sequentially coupled.

In this example, the excitation unit 260 may be configured with a control port E1 and a signal output E2. Wherein the control port E1 is configured to receive an excitation control signal. The signal output port E2 is for outputting the generated excitation signal to the outside. It will be appreciated that the generated excitation signal may be an excitation signal corresponding to the excitation control signal.

As shown in fig. 11, the polarization signal construction unit 270 may be configured with one input terminal F1 and two output terminals (e.g., an output terminal F3 and an output terminal F4). In addition, the polarization signal construction unit 270 may be further configured with one control port F2.

The polarization signal construction unit 270 receives an excitation signal through the input terminal F1. The polarization signal construction unit 270 outputs the modulated signal through the output terminal F3 and/or the output terminal F4. The polarization signal construction unit 270 may also receive a modulation control signal through the control port F2. In some implementations of the present application, the modulation control signal received by control port F2 may include at least one of: a power modulated signal, a phase modulated signal, and an amplitude modulated signal.

In this way, the polarization signal construction unit can control the operation of the power divider 271 in the power dividing state/bypass state for the input signal according to the power modulation signal. The polarization signal construction unit may control the amplitude modulation of the adjustable attenuator 272 according to the phase modulation signal. The polarization signal construction unit may control the phase modulation of the adjustable phase shifter 273 according to the amplitude modulation signal.

The following description will be given separately.

The power divider 271 in the polarization signal construction unit 270 is used to provide a power dividing capability. The power divider 271 may be used to divide one input signal into two or more signals.

For example, an input terminal of the power divider 271 may be connected with the input terminal F1 of the polarization signal construction unit 270. The power divider 271 may divide the input signal according to a preset ratio to obtain two corresponding paths of signal outputs. The power ratio of the two output signals corresponds to the ratio preset by the power divider 271.

Taking the power divider 271 as an example, the preset ratio is 1:1. The ratio of the power of the two signals output by the power divider 271 may be 1:1. In other embodiments, the predetermined ratio of the power divider 271 may be 1:2,1:3, etc.

In this application, an operation state in which the power divider 271 divides an input signal may be referred to as a power division state. The power divider 271 operates in the power dividing state, that is, the polarization signal construction unit 270 operates in the power dividing state.

In some embodiments of the present application, power divider 271 may also operate in a bypass state. The power divider 271 operates in the bypass state, that is, the polarized signal construction unit 270 operates in the bypass state. In this bypass state, the input port of the power divider 271 is in a direct connection state with one of the two output ports. Thereby enabling the input signal to be output directly through an output port. Correspondingly, the output port which is not directly connected with the input port (i.e. the suspended output port) does not have signal output.

In the implementation process, the power divider 271 may receive the power modulation signal transmitted by the control port F2 of the polarization signal construction unit 270 through the control port on the power divider 271. So as to operate in a power division state or a bypass state in accordance with the received power modulation signal. In addition, the power divider 271 may further control the output port that is in conduction with the input port in the bypass state according to the corresponding power modulation signal received by the control port.

In this example, the power divider 271 may be configured with two output ports. The two output ports of the power divider 271 may be connected with the two input ports of the adjustable attenuator 272, respectively.

The adjustable attenuator 272 may be used to amplitude modulate the input signal. In some embodiments, the adjustable attenuator 272 may be disposed at the rear end of the power divider 271, so that the two signals can be amplitude-modulated when the power divider 271 is operated in the power dividing state, or the signal on the current conduction path can be amplitude-modulated when the power divider 271 is operated in any bypass state.

Taking the example that the power divider 271 operates in the power dividing state. The adjustable attenuator 272 may be configured to perform relatively independent amplitude modulation on the two signals from the power splitter 271. That is, the amplitude modulation performed by the adjustable attenuator 272 may be the same or different for both signals. The adjustable attenuator 272 may also be configured to individually amplitude modulate a signal during the amplitude modulation process.

In some embodiments, the adjustable attenuator 272 may receive an amplitude modulated signal through a control port on the adjustable attenuator 272, which may be used to indicate the magnitude of the amplitude modulation. Thus, the adjustable attenuator 272 may perform amplitude modulation of two signals or one signal from the power divider 271 according to the received amplitude modulation signal.

In this example, the adjustable attenuator 272 may be configured with two output ports. The two output ports correspond to the two input ports, respectively. The two output ports of the adjustable attenuator 272 may be connected to the two input ports of the adjustable phase shifter 273, respectively.

The adjustable phase shifter 273 may be used to perform phase modulation of the input signal. In some embodiments, the adjustable phase shifter 273 may be disposed at the rear end of the adjustable attenuator 272. I.e. the phase modulation of the amplitude modulated signal is thereby achieved.

Taking the example that the power divider 271 works in the power dividing state, the adjustable attenuator 272 performs amplitude modulation of two signals. The adjustable phase shifter 273 can separately phase modulate the two signals from the adjustable attenuator 272 relatively independently. That is, the magnitude of the phase modulation performed by the adjustable phase shifter 273 may be the same or different for the two signals. The phase modulation may be performed on one signal alone during the phase modulation performed by the adjustable phase shifter 273.

In some embodiments, the adjustable phase shifter 273 may receive the phase modulated signal through a control port on the adjustable phase shifter 273 to phase modulate two signals or one signal accordingly based on the received phase modulated signal.

It should be noted that, in other embodiments of the present application, the adjustable phase shifter 273 may be disposed between the adjustable attenuator 272 and the power divider 271. Thereby enabling the output signal of the power divider 271 to be phase modulated first and then amplitude modulated.

Thus, by the processing of the power divider 271, the adjustable attenuator 272, and the adjustable phase shifter 273, in the case where the power divider 271 operates in the power dividing state, the polarized signal construction unit 270 can output two signals subjected to phase modulation and/or amplitude modulation based on one input signal.

As a possible implementation, the control of the operating state of the power divider 271, the control of the amplitude modulation of the adjustable attenuator 272, and the control of the phase modulation of the adjustable phase shifter 273 may be implemented by the control unit 240 in the measurement system.

In some implementations of the present application, taking as an example that the power divider 271 operates in a power dividing state under the control of the control unit 240.

The two signals output by the polarized signal construction unit 270 may be transmitted to the currently conductive standard antenna pair for radiation through the two output ports of the switching unit 220, respectively. Thus, for the antenna to be tested, a configurable signal receiving scene is realized.

In other implementations of the present application, taking as an example that the power divider 271 operates in a bypass state under the control of the control unit 240.

One signal outputted from the polarized signal constructing unit 270 may be transmitted to one horizontal polarized antenna or one vertical polarized antenna of the currently turned-on standard antenna pair through one of the two output ports of the switching unit 220 to radiate. Thus, for the antenna to be tested, a configurable receiving scene of the horizontal polarization signal or the vertical polarization signal is realized.

It should be noted that the above description of each component in the polarized signal configuration unit 270 is only an example, and does not limit the polarized signal configuration unit 270 in the present application. In other embodiments, the polarized signal construction unit 270 may also have other compositions to achieve a corresponding modulation function.

In the above-described implementation, the polarization signal construction unit 270 receives the modulation control signal through the control port F2, and the polarization signal construction unit 270 disposes the power modulation signal, the phase modulation signal, and the amplitude modulation signal to the corresponding units through the control port F2, respectively. In other implementations, control port F2 may be replaced with three ports that receive power modulated signals, phase modulated signals, and amplitude modulated signals, respectively. The three ports may correspond to a control port of the power divider 271, a control port of the adjustable phase shifter 273, and a control port of the adjustable attenuator 272, respectively.

The connection of the components of yet another measurement system provided in the embodiments of the present application is illustrated below in conjunction with the examples of fig. 8, 10 and 11.

Referring to fig. 12, the measurement system may further include a polarization signal construction unit 270 and an excitation unit 260 on the basis of the measurement system composition shown in fig. 8. The measurement system as provided in fig. 12 may be used to make measurements of polarization characteristics of the transmit and receive bands. The foregoing examples may be referred to for a measurement scheme for performing polarization characteristics of a transmission frequency band, and will not be described in detail.

In this example, when the measurement system as provided in fig. 12 is used to measure polarization characteristics of a receiving band, measurement of polarization characteristics of different standard antennas at positions can be achieved by the switching unit 220, the polarized signal construction unit 270, the excitation unit 260, the rotatable jig 250, and the control unit 240. Thus, when the measurement system as provided in fig. 12 is only used for measuring polarization characteristics of a receiving band, the measurement system as provided in fig. 12 may further be reduced in number of components. Such as the thin analytics unit 230.

The excitation unit 260 may include a control port E1 and a signal output port E2.

The control port E1 is coupled to an excitation control port of the control unit 240. The signal output port E2 is coupled to the input port F1 of the polarized signal construction unit 270.

The polarization signal construction unit 270 includes an input port F1, a control port F2, an output port F3, and an output port F4.

Wherein the input port F1 is coupled to the signal output port E2 of the excitation unit 260. Control port F2 is coupled to a modulation control port of control unit 240. The output port F3 is coupled to the output port Aout of the switching unit 220. The output port F4 is coupled to the output port Bout of the switching unit 220.

Inside the polarization signal construction unit 270, the power divider 271 may include one input terminal and two output terminals. For example, in the example of fig. 12, the input of the power divider 271 may be the right port, and the output of the power divider may be the left two ports. An input of the power divider 271 is coupled to the input port F1. The two output ports of the power divider 271 are coupled to the two input ports of the adjustable attenuator 272, respectively. The two output ports of the adjustable attenuator 272 are coupled to the two input ports of the adjustable phase shifter 273, respectively. The two output ports of the adjustable phase shifter 273 are coupled to the output port F3 and the output port F4, respectively. Thus, two signal modulation links may be formed between the two output terminals of the power divider 271 and the output ports F3 and F4. In the following description, the two signal modulation links are referred to as a first signal modulation link and a second signal modulation link, respectively.

In measuring the polarization characteristics of the antenna to be measured in the reception frequency band by the measurement system as shown in fig. 12, the control unit 240 transmits a corresponding instruction to the excitation unit 260 through the excitation control port. The excitation unit 260 generates an excitation signal of a corresponding frequency band (e.g., frequency f 2) according to the instruction received from the control port E1. The frequency f2 may be included in the reception frequency band of the antenna to be measured.

The excitation unit 260 transmits an excitation signal to the power divider 271 through the signal output port E2.

In some steps, the power divider 271 operates in a bypass state. The first signal modulation link is turned on and the second signal modulation link is not operated as an example.

The first signal modulation link is in communication with the input port F1. The second signal modulation link is in an inactive state. In this way, the excitation signal may be output from the output port F3 to the output port Aout of the switching unit 220 through the first signal modulation link.

In this example, similarly to the explanation shown in fig. 8, the output port Aout of the switching unit is turned on with one input port a at the same time. Correspondingly, the output port Bout of the switching unit is conducted with one input port B. The input port a, which is in conduction with the output port Aout, and the input port B, which is in conduction with the output port Bout, are connected to the horizontally polarized antenna and the vertically polarized antenna of the same standard antenna pair, respectively.

Take the output port Aout of the switching unit 220 and the input port A1 to be conducted, taking the output port Bout of the switching unit 220 and the input port B1 to be conducted as an example.

Since the first signal modulation link is turned on and the second signal modulation link is not operated, the excitation signal may flow into the switching unit 220 from the output port Aout and flow out from the input port A1 after the modulation process. In this way, the excitation signal may be transmitted to the horizontally polarized antenna 211_1 in the standard antenna pair 210_1 for radiation. And thus causes the excitation signal to radiate through the horizontally polarized antenna 211_1. Correspondingly, for the antenna to be treated, a reception scene of horizontally polarized radiation is constructed.

In the application, the antenna to be tested can receive the horizontally polarized radiation.

Typically, electronic devices have the ability to receive signal measurements. For example, the electronic device may measure a Received Signal Strength (RSSI) of the received signal, and/or a signal-to-noise ratio (SNR) of the received signal, etc.

The data such as RSSI and SNR may be related to the frequency of the received signal. In some implementations, the electronic device may be configured to perform preset frequency points in one or more receiving frequency bands, and measure and acquire data such as RSSI, SNR, and the like of the corresponding frequency points.

Taking the example of the electronic device measuring the received signal strength.

In this example, the electronic device may receive the horizontally polarized radiation through the antenna under test and output an RSSI corresponding to the horizontally polarized radiation. For example, the RSSI corresponding to the horizontally polarized radiation is rssi_1.

In some embodiments, the control unit 240 may obtain the rssi_1 from the electronic device by means of wireless communication or by means of wired direct connection.

In other embodiments, the excitation unit 260 may obtain rssi_1 from the electronic device and transmit the rssi_1 to the control unit 240.

In this way, the control unit 240 can obtain the reception characteristic parameters of the horizontally polarized radiation. For example, the reception characteristic parameter may include rssi_1. The receiving characteristic parameter has a corresponding relationship with the position of the standard antenna pair 210_1.

Based on a similar implementation, the control unit 240 may also obtain the reception characteristic parameters of the vertically polarized radiation.

Illustratively, the polarized signal construction element 270 remains in the bypass state. In the bypass state, the first signal modulation link is not powered on and the second signal modulation link is powered on. In connection with the above description, the vertically polarized antenna 212_1 may radiate an excitation signal, thereby constructing a reception scene of vertically polarized radiation.

Correspondingly, the electronic device may receive the vertically polarized radiation and measure a reception characteristic parameter of the corresponding vertically polarized radiation. For example, the reception characteristic parameter of the vertically polarized radiation may include rssi_2.

In this application, the control unit 240 may determine, according to the reception characteristic parameters of the horizontally polarized radiation and the reception characteristic parameters of the vertically polarized radiation, a corresponding amplitude ratio of the current position of the working standard antenna pair (e.g., the first position of the standard antenna pair 210_1).

The amplitude ratio corresponds to the frequency point used when the received frequency point is used for measuring parameters such as RSSI and the like configured in the electronic equipment.

As an example, the control unit 240 may control the excitation unit 260 to generateA corresponding excitation signal. The power of the excitation signal may be the target power P0.

By controlling the polarized signal construction unit 270 to operate in the first bypass state, i.e., the first signal modulation link is operated, the second signal modulation link is not operated. So that the excitation signalMay be transmitted in full quantity to the antenna 211_1 through the first signal modulation link, the switching unit 220.

The excitation signalAfter being radiated by a horizontally polarized antenna (e.g. antenna 211_1), the antenna to be tested receives a signal of +. >. The electronic device is based on the received signal +.>The RSSI_1 reported to the control unit 240 may be + ->。

By controlling the polarized signal construction unit 270 to operate in the second bypass state, i.e., the second signal modulation link is operated, the first signal modulation link is not operated. So that the excitation signalMay be transmitted in full quantity to the antenna 212_1 through the second signal modulation link, the switching unit 220.

The excitation signalAfter being radiated by a vertically polarized antenna (e.g. antenna 212_1), the antenna to be tested receives a signal of +.>. The electronic device is based on the received signal +.>The RSSI_2 reported to the control unit 240 may be + ->。

The control unit can determine the corresponding amplitude ratio at the first position of the standard antenna pair 210_1. In the following description, will be->Denoted AR1. I.e. the amplitude ratio of the first position +.>。

In addition, the measurement system may also operate in other steps, so that the control unit 240 can determine the phase difference corresponding to the first position where the currently conductive standard antenna pair 210_1 is located.

Illustratively, the control unit 240 controls the power divider 271 to operate in a power dividing state. The control unit 240 may also control the amplitude ratio according to the first positionThe phase and amplitude of the signals on the first and second modulation links are controlled.

As an example, the control unit 240 may control the signal output by the first signal modulation link to be a modulation control signal. The control unit 240 may control the signal outputted from the second signal modulation link to +.>。

Combining the aforementioned excitation signalsIn this example, the output signal amplitude and phase may remain consistent with the excitation signal through the first signal modulation link modulation. Different from the processing of the first signal modulation link, the amplitude of the output signal can be modulated to +_ by an adjustable attenuator on the second signal modulation link>. In addition, on the second signal modulation link, the phase of the output signal can be additionally increased by an adjustable phase shifter>Is used for the phase shift of (a). />

Thereby, the signalMay be transmitted to the antenna 211_1 for transmission through the switching unit 220. Correspondingly, the electronic device receives the horizontally polarized radiation sent by the antenna 211_1 through the antenna to be tested. For example, the horizontally polarized radiation received by the electronic device via the antenna to be tested is denoted +.>。

At the same time, signalsMay be transmitted to the antenna 212_1 for transmission through the switching unit 220. Correspondingly, the electronic device receives the vertically polarized radiation transmitted by the antenna 212_1 through the antenna to be tested. For example, the vertically polarized radiation received by the electronic device via the antenna to be tested is denoted +. >。

In this example, the antenna 211_1 is configured to transmit a signal according to the signalHorizontal polarized radiation is performed, and antenna 212_1 is dependent on signal +.>The perpendicular polarized radiation may be performed simultaneously.

Then the signal received by the antenna to be tested through the electronic equipment can be expressed as。

Similar to the measurement mechanism in which the switching unit operates in the bypass state, the electronic device receivesAfter that, the control unit 240 may acquire parameters such as RSSI of the received signal. For example, the control unit 240 may acquire the RSSI of the currently received signal as rssi_3.

It will be appreciated that the control unit 240 controls the phase shift of the adjustable phase shift unit to increaseWhen different, rssi_3 is different.

In the embodiment of the present application, the control unit 240 may adjust the phase offset of the adjustable phase shift unit during the phase modulation (i.e.To the size of the antenna to be tested) until the electronic device receives +.>. To be used forIn the case of->As an example.

In this way, the control unit 240 may determine thatThe phase difference is a phase difference which is expressed at a first position when the antenna to be measured receives signals.

Thereby making it possible toThe control unit 240 can determine that the amplitude ratio of the first position is in the receiving scene A phase difference of +.>。

In connection with the implementation of the scheme in which the control unit 240 determines the polarization characteristic of the first location in the transmission scene, similarly, in this example, the control unit 240 may also determine the polarization characteristic of the first location in the reception scene based on the amplitude ratio AR1 of the first location and the phase difference.

Illustratively, taking the example of measuring the polarization characteristic of the first receiving frequency point in the receiving frequency band. Then, the above RSSI measurement may be performed based on the first receiving frequency point.

Correspondingly, at an amplitude ratio AR1 equal to 1, and a phase differenceWhen the angle is 90 degrees or-90 degrees, the antenna to be measured is corresponding to the first position, and when the antenna to be measured receives signals of the first receiving frequency point, circular polarization is shown.

At a phase differenceWhen the angle is 0 DEG or 180 DEG or minus 180 DEG, the antenna to be measured is corresponding to the first position, and when the antenna to be measured receives the signal of the first receiving frequency point, the antenna to be measured shows linear polarization.

And in the case where the above condition is not satisfied, that is, the amplitude ratio AR1 is not equal to 1; alternatively, the amplitude ratio AR1 is equal to 1, and the phase differenceIf the signal is not at 0 DEG or 180 DEG or-180 DEG or 90 DEG or-90 DEG, the signal is transmitted to the antenna to be measured at the first position, and the antenna to be measured is transmitted to the antenna to be measured at the second position. Furthermore, the control unit 240 may also control the phase difference according to the amplitude ratio AR1 >And determining parameters such as the axial ratio, the inclination angle and the like of the elliptical polarization.

Thus, based on the measurement system as provided in fig. 10-12, analog measurements of the received scene can be achieved. The polarization characteristic of the first position in the receiving scene is completed without disassembling the electronic equipment.

It will be appreciated that the measurement system may also enable measurement of polarization characteristics at other locations (e.g. other locations in a spherical coordinate system) based on similar logic.

As an example, referring to fig. 13, a flow chart of another method for measuring polarization characteristics according to an embodiment of the present application is shown. The implementation of the scheme as provided in fig. 13 can be realized by the measurement system as provided in fig. 10-12, so as to measure the polarization characteristic of the antenna to be detected in the receiving scene. It should be noted that, this example of the flow provided in fig. 13 is described by taking measurement to determine the polarization characteristics of the first standard antenna pair corresponding to the first position as an example. Based on a similar implementation, the polarization characteristics of other standard antennas for corresponding positions can be controlled to be measured.

As shown in fig. 13, the scheme may include:

s1301, a first antenna of the first standard antenna pair is controlled to emit according to a first excitation signal.

For example, the control unit may control the excitation unit to generate the first excitation signal.

As one implementation, the first excitation signal may be identified as。

In connection with the explanation in fig. 12, in this S1301, the control unit may also control the first signal modulation link in the polarized signal construction unit 270 to operate, and the second signal modulation link to not operate. The first signal modulation link is operated without amplitude or phase adjustment of the first excitation signal. That is, the signal output by the first signal modulation link may still be。

In addition, in S1301, the control unit may further control the input port A1 and the output port Aout of the switching unit to be turned on, and the input port B1 and the output port Bout to be turned on. The input port A1 is connected to a horizontally polarized antenna (e.g., the antenna 211_1, which may also be referred to as a first antenna) of a first standard antenna pair (e.g., the standard antenna pair 210_1). The input port B1 is connected to a vertically polarized antenna (e.g., antenna 212_1, which may also be referred to as a second antenna) of a first standard antenna pair (e.g., standard antenna pair 210_1).

Thus, by modulating the link with the first signal,may be input to the antenna 211_1 for radiation.

It will be appreciated that since the antenna 211_1 is a horizontally polarized antenna, a horizontally polarized radiation environment for the antenna to be tested can be constructed.

S1302, acquiring a first RSSI corresponding to a signal received by the electronic equipment through an antenna to be tested.

The electronic device may receive electromagnetic waves in the current environment through the antenna to be tested, for example. The electromagnetic wave in the current environment may be horizontally polarized radiation radiated by the first antenna in S1301.

After the electronic equipment receives the signals through the antenna to be detected, the relevant parameters of the received signals can be determined. For example, the electronic device may measure the RSSI of the received signal as the first RSSI.

It will be appreciated that the antenna to be tested may receive electromagnetic waves in a frequency band. The frequency band may be included in the receive frequency band of the antenna under test.

Thus, the electronic device can determine the RSSI of each frequency point in the receiving band.

In this example, the first RSSI may be an RSSI of a configured frequency point to be measured (e.g., the first receiving frequency point) in the receiving frequency band. The frequency points to be measured can be one or a plurality of frequency points.

In some embodiments, the frequency points to be measured may be manually configured into the electronic device prior to beginning the measurement. In other embodiments, the frequency point to be measured may be configured to the electronic device by the control unit in a wired or wireless manner.

After the electronic device acquires the first RSSI, the first RSSI may be transmitted to the control unit, so that the control unit performs subsequent processing according to the first RSSI.

In combination with the foregoing description, the first RSSI may be rssi_1, e.g. the first RSSI may be。

S1303, the second antenna of the first standard antenna pair is controlled to transmit according to the first excitation signal.

S1304, acquiring a second RSSI corresponding to the signal received by the electronic equipment through the antenna to be tested.

The processing of S1303 to S1304 may refer to the explanation in S1301 to S1302.

It will be appreciated that based on the processing of S1303, the vertical polarized radiation environment for the antenna to be tested may be configured by the vertical polarized antenna (e.g., the second antenna, antenna 212_1) in the first standard antenna pair.

Correspondingly, the electronic equipment can receive electromagnetic waves in the current environment through the antenna to be detected, and further report a second RSSI of the frequency point to be detected to the control unit. The second RSSI may be RSSI_2, e.g., the second RSSI may be。

S1305, determining an amplitude ratio AR1 corresponding to the first position according to the first RSSI and the second RSSI.

For example, the control unit may determine, according to the first RSSI and the second RSSI, an amplitude ratio corresponding to the first position when the antenna to be measured receives the signal of the frequency point to be measured 。

S1306, acquiring a second excitation signal and a third excitation signal according to the amplitude ratio AR 1.

The control unit may control the polarization signal construction unit to acquire the second excitation signal and the third excitation signal on the first signal modulation link and the second signal modulation link, respectively, based on the input first excitation signal.

In connection with the illustration in fig. 12, the amplitude of the second excitation signal may be AR1 times the amplitude of the third excitation signal. The phase of the second excitation signal may be the same as the first excitation signal. The phase of the third excitation signal can be additionally increased based on the first excitation signalIs used for the phase shift of (a).

For example, the second excitation signal may be identified as. The third excitation signal may be denoted +.>。

S1307, controlling the first antenna to transmit according to the second excitation signal; and controlling the second antenna to transmit according to the third excitation signal.

For example, the second excitation signal may be transmitted to the first antenna for radiation. At the same time, the third excitation signal may be transmitted to the second antenna for radiation.

In this way, in the space around the antenna to be measured, electromagnetic waves synthesized by the horizontal polarized radiation of the first antenna according to the second excitation signal radiation and the vertical polarized radiation of the second antenna according to the third excitation signal radiation can be distributed.

S1308, acquiring a third RSSI corresponding to the signal received by the electronic equipment through the antenna to be tested.

The electronic device may receive the electromagnetic wave through the antenna to be tested, thereby determining that the RSSI of the received electromagnetic wave is the third RSSI.

S1309, it is determined whether the third RSSI reaches the maximum target value.

In this example, the maximumThe target value may be equal to or close to 2 times the first RSSI (e.g). That is, the maximum target value may correspond to 2 times of the RSSI of the signal received by the antenna to be measured when the first antenna radiates according to the first excitation signal or the second excitation signal. />

It can be understood that when the phase difference of the two signals can match the polarization characteristics of the antenna to be tested, the antenna to be tested can achieve the in-phase superposition effect when receiving the radiation of the first antenna and the radiation of the second antenna. At this time, the third RSSI may be equal to or close to twice the RSSI when the second excitation signal (i.e., the first excitation signal) is received.

Correspondingly, when the phase difference of the two signals cannot be matched with the polarization characteristic of the antenna to be detected, the effect that the two signals cannot be fully overlapped and even partially or fully offset occurs when the antenna to be detected receives the radiation of the first antenna and the radiation of the second antenna. Correspondingly, the third RSSI corresponding to the signal received by the antenna to be tested is also smaller than the target maximum value.

In this way, the control unit may determine whether the phase difference between the second excitation signal and the third excitation signal matches the polarization characteristic of the antenna to be measured according to whether the third RSSI obtained by the electronic device measurement reaches the maximum target value.

In the present example, in the case where the third RSSI reaches the maximum target value, the following S1311 is performed. Correspondingly, in case the third RSSI does not reach the maximum target value, the following S1310 is performed.

S1310, adjusting the phase difference of the third excitation signal.

It will be appreciated that the third RSSI may correspond to the effect of a superposition of the radiation of the first antenna and the radiation of the second antenna at the location of the electronic device. The RSSI of the superimposed signal is related to both the amplitudes and the phase differences of the second and third excitation signals.

In connection with the explanation in S1306, since the second excitation signal and the third excitation signal are amplitude-modulated according to AR1, the amplitudes of the two excitation signals are made coincident. Thus, the third RSSI may represent a phase difference of the two excitation signals.

In this example, as shown in fig. 13, the control unit may control the polarization signal construction unit to adjust the phase difference between the third excitation signal and the second excitation signal, thereby acquiring a new third excitation signal. And returning to S1307 to facilitate the electronic device to continue to measure the RSSI of the signal received by the antenna to be tested in the current environment. Until the third RSSI of the signal received by the antenna to be tested reaches the maximum target value.

It should be noted that, in different implementations of the present application, the control unit may adjust the phase difference of the third excitation signal according to different strategies.

In some embodiments, the control unit controls the excitation unit to generate the third excitation signal in S1306 in comparison with the additional increase of the second excitation signalMay be preconfigured +.>. In this S1310, the control unit may control the control unit according to a preset step +.>The phase difference of the third excitation signal is adjusted.

For example, at the time of judgment of S1309, the third RSSI does not reach the maximum target value, and the phase difference between the third excitation signal currently input to the second antenna and the second excitation signal is. Then, in S1310, the control unit may control the phase difference between the third excitation signal and the second excitation signal to be adjusted to +.>. Thereafter, the process goes to S1309 again, and in the case where the third RSSI does not reach the maximum target value, S1310 is triggered again. In this way, the control unit can controlThe phase difference between the third excitation signal and the second excitation signal is increased further on the basis of the present state>. For example, the control unit may adjust the phase difference between the third excitation signal and the second excitation signal to +. >. And so on.

In other embodiments, the control unit controls the excitation unit to generate the third excitation signal in S1306 in comparison with the additional increase of the second excitation signalThe phase shift of (2) may be a phase difference determined based on the amplitude ratio AR1 of the first position +.>。

Wherein the phase differenceCan be obtained according to the following manner:

the control unit controls the second signal modulation link to generate a fourth excitation signal. The amplitude of the fourth excitation signal is the same as the amplitude of the third excitation signal. The phase difference between the fourth excitation signal and the second excitation signal is 0. That is, the fourth excitation signal may beAnd a third excitation signal at 0.

And acquiring the corresponding RSSI of the electronic equipment when the electronic equipment receives signals through the antenna to be detected as a fourth RSSI. The signal received by the antenna to be measured may be a synthesized electromagnetic wave of an electromagnetic wave radiated by the first antenna based on the second excitation signal and an electromagnetic wave radiated by the second antenna based on the fourth excitation signal.

Thereby, the phase difference。

It will be appreciated that in an ideal case, the phase difference between the third excitation signal and the second excitation signal is configured toWhen the first antenna and the second antenna emit electromagnetic waves, the result of the combination is matched with the polarization characteristic of the antenna to be tested, so that the third RSSI can be +. >. In the actual implementation, however, since the path disturbance or the like is unavoidable, in S1306, the phase difference between the third excitation signal and the second excitation signal is set to +.>In the case of (2), it may also occur that the third RSSI may be less than + ->。

Thus, in this example, the control unit may adjust the phase difference between the third excitation signal and the second excitation signal in S1310At->The vicinity is traversed according to a certain step size. It is thereby possible to more quickly determine that the third RSSI can be brought to the maximum target value (e.g.)>) Is a phase difference of (a) and (b).

S1311, determining a phase difference corresponding to the first position.

The control unit may, for example, be capable of causing the third RSSI to reach a maximum target value (e.g) The phase difference between the third excitation signal and the second excitation signal is determined as the first position pairA corresponding phase difference. For example, the phase difference of the first position may be +.>。

S1312, determining polarization characteristics of the first position according to the amplitude ratio of the first position and the phase difference of the first position.

In conjunction with the description of S905 in FIG. 9, in this example, the control unit may determine the amplitude ratio (e.g., AR 1) and the phase difference (e.g.) The polarization characteristic of the first location is determined.

Exemplary, at an amplitude ratio AR1 equal to 1, and a phase differenceAt 90 ° or-90 °, then corresponds to circular polarization in the first position.

At a phase differenceAt 0 deg. or 180 deg. or-180 deg., then corresponds to linear polarization in the first position.

And in the case where the above condition is not satisfied, that is, the amplitude ratio AR1 is not equal to 1; alternatively, the amplitude ratio AR1 is equal to 1, and the phase differenceIn the case of a non-0 ° or 180 ° or-180 ° or 90 ° or-90 °, this corresponds to an elliptical polarization in the first position.

Thus, by implementing the scheme as provided in fig. 13, measurement of polarization characteristics of the first standard antenna at the corresponding first position in the receiving scene can be implemented.

In conjunction with the description of polarization characteristic measurement in the transmitting scenario in fig. 9, in the receiving scenario, the control unit may also implement a spherical coordinate system based on measurement of multiple standard antenna pairs in a single gesture, in conjunction with adjustment logic of multiple gesturesMeasurement of polarization characteristics at a plurality of locations.

As an example, referring to fig. 14, a flowchart of still another polarization characteristic measurement method according to an embodiment of the present application is provided.

The solution as provided in fig. 14 may be based on the measurement solution of polarization characteristics for a single location as provided in any of the embodiments described above, to achieve measurement of multiple locations on a spherical coordinate system.

Illustratively, in the description of fig. 14, taking this scheme in combination with the polarization characteristic measurement scheme in the reception scene as shown in fig. 13 as an example, measurement of a plurality of positions on the spherical coordinate system is implemented.

As shown in fig. 14, the scheme may include:

s1401 generates a first posture control signal to rotate the rotatable jig to the first posture.

For example, the process of S1401 may refer to S901 as shown in fig. 9.

For example, the first pose may correspond to a measured spherical coordinate systemOn (I)>Polarization characteristics at various locations in the tangential plane.

S1402 generates a first switching control signal to cause the switching unit to operate in the first state.

For example, the process of S1402 may refer to S902 as shown in fig. 9.

For example, the first state corresponds to the first standard antenna pair being coupled to the evaluation unit or the polarization signal construction unit via the switching unit. Thus, by operating the switching unit in the first state, measurement of the polarization characteristic of the first position of the first standard antenna pair can be achieved.

Taking the first position asAs an example. The switching unit operates in the first stateThe state can be used for measurementPolarization characteristics of the location.

S1403, in the first posture, the polarization characteristic of the first position is measured.

Illustratively, polarization characteristics of the reception frequency band are taken as an example.

The executing step of S1403 may be specifically replaced by S1301-S1312 shown in fig. 13, so as to implement measurement of the polarization characteristic of the first position in the case where the frequency point to be measured is the receiving frequency point.

It will be appreciated that in other embodiments, polarization characteristics of the transmit band are taken as examples.

The executing step of S1403 may be specifically replaced by S903 to S905 as shown in fig. 9, so as to implement measurement of the polarization characteristic of the first position in the case where the frequency point to be measured is the transmitting frequency point.

And under the condition that the frequency band corresponding to the frequency point to be measured is the same frequency of transmitting/receiving, the scheme provided by the related steps in fig. 13 or fig. 9 can be flexibly used according to the actual situation to measure the polarization characteristic of the first position.

Similar to the illustration as in FIG. 9, in some embodiments, the control unit may store the polarization characteristic measurements at the first location after completion of the measurementsCorrespondence with the corresponding polarization characteristics.

S1404, whether measurement of all positions in the current posture is completed.

For example, the process of S1404 may refer to S906 as shown in fig. 9.

When the measurement of all positions in the current pose (e.g., the first pose) is not completed, S1405 is performed. Correspondingly, when the measurement of all the positions in the current posture is completed, S1406 is executed.

S1405, measuring polarization characteristics of the second position in the first posture.

For example, the process of S1405 may refer to S907 as shown in fig. 9.

For example, the second location may be a second standard antenna pair center corresponding location. The second position may be denoted as。

It will be appreciated that after the measurement of the first position is completed, the control unit may storeIs a polarization characteristic of (a) in the light source. And after the measurement of the second position is completed the control unit can store +.>Is a polarization characteristic of (a) in the light source.

Similarly, after all the positions of the first pose are measured, the control unit may store polarization characteristics of n standard antenna pairs corresponding to n positions respectively:

polarization characteristics of->Is … …, < >>Is a polarization characteristic of (a) in the light source.

In connection with the explanation in fig. 9, when the judgment of S1404 is triggered again after the measurement of the polarization characteristics of different positions in the first posture is repeatedly performed n times, it can be determined that the measurement of all the positions in the current posture has been completed.

S1406, whether measurement in all the postures is completed.

For example, the process of S1406 may refer to S908 as shown in fig. 9.

S1407, generating a second attitude control signal to rotate the rotatable clamp to the second attitude.

For example, the process of S1407 may refer to S909 as shown in fig. 9.

It is understood that in the case where the measurement of all the attitudes has not been completed, the control unit may perform the following S1407 in order to controlThe angle is adjusted to be corresponding to the second posture>。

Thus, after completion ofAfter the polarization characteristics of all the positions on the corresponding section are measured, the second posture corresponding +.>Polarization characteristics at various locations on the tangential plane.

Similar to the measurement of the first pose, after completing the measurement of the polarization characteristics of the respective positions corresponding to the second pose, the control unit may store the polarization characteristics of the n standard antennas corresponding to the second pose for the respective n positions in total:

Thus, the control unit can acquire the polarization characteristics of the new n positions every time the measurement of the polarization characteristics of one posture is completed. Taking as an example that the control unit is configured to make measurements of polarization characteristics of m poses. After the measurement of polarization characteristics of all the poses is completed, the control unit can acquire a spherical coordinate systemGo upstai (common prescription)>Polarization characteristics of individual sites.

S1408, measurement is completed.

Therefore, based on the implementation of the scheme provided in fig. 14, through the composition of the measurement system as shown in fig. 10-12, the measurement of the polarization characteristic of the receiving frequency band can be completed without disassembling the electronic equipment.

The measurement method as provided in fig. 14 may also be implemented in combination with the scheme as shown in fig. 9 in conjunction with the description in fig. 14, to perform measurement of polarization characteristics of the transmission band.

It should be noted that, in connection with the description of the measurement system in fig. 2 to 8 and the description of the measurement system in fig. 10 to 12, in some embodiments of the present application, by configuring a plurality of standard antenna pairs, a rotatable jig, a switching unit, a polarization signal construction unit, an excitation unit, an analysis unit, and a measurement system of a control unit, it is possible to support any one of the measurement methods of polarization characteristics provided in the respective embodiments described above.

Taking the measurement system provided in the embodiment of the present application as an example, the measurement system has a composition as shown in fig. 12 and a connection relationship.

In some embodiments, the control unit may control the analysis unit, the switching unit, and the rotatable clamp to operate, and in combination with the standard antenna pair, perform measurement of polarization characteristics of the transmitting band according to the polarization characteristic measurement method as provided in fig. 9.

In other embodiments, the control unit may control the polarized signal construction unit, the excitation unit, the switching unit, and the rotatable clamp to be powered on, and in combination with the standard antenna pair, the measurement of the polarization characteristic of the receiving band may be performed according to the polarization characteristic measurement method as provided in fig. 13-14.

Specific implementation may refer to the descriptions of the foregoing embodiments, and are not repeated herein.

It may be understood that, in order to implement the above-mentioned functions, the electronic device provided in the embodiments of the present application includes corresponding hardware structures and/or software modules that perform each function. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

The present application also provides a chip system for causing a control unit to implement respective logic steps in the polarization characteristic measurement method as provided in fig. 9 or fig. 13 to 14 by running the stored codes.

Exemplary, referring to fig. 15, a schematic diagram of a chip system 1500 according to an embodiment of the present application is provided. The chip system 1500 may include: a processor 1501 and a communication interface 1502 for supporting the relevant devices (e.g. control units) to implement the functions referred to in the above embodiments. In one possible design, the chip system further includes a memory to hold the necessary program instructions and data. The chip system can be composed of chips, and can also comprise chips and other discrete devices. It should be noted that, in some implementations of the present application, the communication interface 1502 may also be referred to as an interface circuit. In some embodiments of the present application, the chip system 1500 may be configured in an electronic device as a control unit, such as an electronic computer or the like.

The functions or acts or operations or steps and the like in the embodiments described above may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Although the present application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to include such modifications and variations as well.

Claims

1. The system for measuring the polarization characteristics of the antenna is characterized by being used for measuring the polarization characteristics of the antenna to be measured, and the antenna to be measured is configured in electronic equipment;

the measurement system includes: n standard antenna pairs, a rotatable clamp, a switching unit, a polarized signal construction unit, an excitation unit, and a control unit; n is an integer greater than or equal to 1;

the switching unit is configured with 2n inputs, each of the standard antenna pairs being connected to 2 of the 2n inputs of the switching unit;

The switching unit and the polarized signal construction unit are respectively provided with two output ends; the first output end of the polarized signal construction unit is connected with the first output end of the switching unit, and the second output end of the polarized signal construction unit is connected with the second output end of the switching unit;

the polarized signal construction unit is provided with 1 input end, and the input end of the polarized signal construction unit is connected with the output end of the excitation unit;

the control unit is respectively coupled with the switching unit, the rotatable clamp, the polarized signal construction unit and the control end of the excitation unit;

the n standard antenna pairs comprise a first standard antenna pair, the first standard antenna pair comprises a first antenna and a second antenna, and polarization characteristics of the first antenna and the second antenna are different; the working frequency bands of the first antenna and the second antenna are first frequency bands, the working frequency band of the antenna to be tested is second frequency bands, and the first frequency bands cover the second frequency bands;

the measuring system is used for measuring the polarization characteristics of the antenna to be measured working in the receiving frequency band,

the rotatable clamp is used for clamping the electronic equipment;

The excitation unit is used for generating a first excitation signal under the control of the control unit;

the switching unit is used for working in a first state under the control of the control unit; the first state corresponds to that a first input end of the switching unit is conducted with a first output end of the switching unit, and a second input end of the switching unit is conducted with a second output end of the switching unit; the first input and the second input of the switching unit are included in 2n inputs of the switching unit; the first input end and the second input end of the switching unit are respectively connected with a first antenna and a second antenna of the first standard antenna pair;

the polarized signal construction unit is used for exciting the first standard antenna pair through the switching unit according to the first excitation signal under the control of the control unit;

the first standard antenna pair is used for radiating the first frequency band according to the received excitation signal;

the control unit is used for acquiring a first related parameter from the electronic equipment; the first related parameters are obtained by measuring the electromagnetic wave of the first standard antenna to radiation through the antenna to be measured;

The control unit is further used for determining polarization characteristics of the antenna to be tested at a first position when the antenna to be tested works at a first frequency point to be tested for signal reception according to the first related parameters; the first frequency point to be detected is included in the receiving frequency band of the second frequency band, and the first position is the position where the central position of the first standard antenna pair is located.

2. The measurement system of claim 1, wherein the measurement system comprises a sensor,

the polarization signal construction unit is configured to excite, under control of the control unit, the first standard antenna pair through the switching unit according to the first excitation signal, and includes:

the polarized signal construction unit is used for working in a first bypass state under the control of the control unit;

wherein in the first bypass state, the input of the polarization signal construction unit and the first output of the polarization signal construction unit are conductive;

the polarized signal construction unit is used for transmitting the first excitation signal from the first output end to the switching unit so as to excite a first antenna of the first standard antenna through the first excitation signal;

The first correlation parameter includes a first RSSI;

the control unit is configured to obtain a first relevant parameter from the electronic device, including:

the control unit is used for acquiring the first RSSI from the electronic equipment; and the first RSSI is the RSSI of the first frequency point to be detected, which is obtained by the electronic equipment through the antenna to be detected and the electromagnetic wave radiated by the first antenna according to the first excitation signal after measurement.

3. The measurement system of claim 2, wherein the measurement system comprises a sensor,

the polarized signal construction unit is used for working in a second bypass state under the control of the control unit;

wherein in the second bypass state, the input terminal of the polarized signal construction unit and the second output terminal of the polarized signal construction unit are conducted;

the polarized signal construction unit is used for transmitting the first excitation signal from the second output end to the switching unit so as to excite the second antenna of the first standard antenna through the first excitation signal;

The first related parameter further comprises a second RSSI;

the control unit is used for acquiring the second RSSI from the electronic equipment; and the second RSSI is the RSSI of the first frequency point to be measured, which is obtained by the electronic equipment through the antenna to be measured and the electromagnetic wave radiated by the second antenna according to the first excitation signal is measured.

4. The measurement system of claim 3, wherein the measurement system comprises a sensor,

the control unit is further configured to determine a first amplitude ratio according to the first RSSI and the second RSSI; the first amplitude ratio corresponds to the first position;

the control unit is further configured to determine a first amplitude ratio according to the first RSSI and the second RSSI, and specifically includes:

the control unit determines the first amplitude ratio as。

5. The measurement system of claim 4, wherein the measurement system comprises a sensor,

the polarization signal construction unit is used for working in a power division state under the control of the control unit;

Wherein, in the power division state, the input end of the polarized signal construction unit and the first output end and the second output end of the polarized signal construction unit are coupled and conducted;

the polarization signal construction unit is specifically configured to generate a second excitation signal and a third excitation signal according to the first excitation signal under the control of the control unit;

the amplitude and phase of the second excitation signal are the same as those of the first excitation signal; the amplitude of the third excitation signal is the product of the amplitude of the second excitation signal and the first amplitude ratio; the phase difference between the phase of the third excitation signal and the phase of the second excitation signal is a first value;

the first output end of the switching unit receives the second excitation signal so that the first antenna radiates according to the second excitation signal;

the second output end of the switching unit receives the third excitation signal so that the second antenna radiates according to the third excitation signal;

the first related parameter further comprises a third RSSI;

the control unit is used for acquiring the third RSSI from the electronic equipment; and the third RSSI is the RSSI of the first frequency point to be measured, which is obtained by measuring the electromagnetic wave radiated by the first antenna and the second antenna through the antenna to be measured by the electronic equipment.

6. The measurement system of claim 5, wherein the control unit is further configured to determine whether the third RSSI reaches a target threshold; the target threshold corresponds to the first RSSI;

the control unit is further configured to determine the first value as a first phase difference, the first phase difference corresponding to the first location, if the third RSSI reaches the target threshold;

the control unit is further configured to control the polarization signal construction unit to adjust a phase difference of the third excitation signal and the second excitation signal to a second value, the second value being different from the first value, in a case where the third RSSI is smaller than the target threshold.

7. The measurement system of claim 6, wherein the measurement system comprises a sensor,

the control unit is further configured to determine, according to the first related parameter, polarization characteristics of the antenna to be measured at a first position when the antenna to be measured works at a first frequency point to be measured, where the method specifically includes:

the control unit is used for determining polarization characteristics of the first position according to the first amplitude ratio and the first phase difference;

wherein when the first amplitude ratio is equal to 1 and the first phase difference is 90 ° or-90 °, the control unit is configured to determine that the polarization characteristic of the first position is circular polarization;

The control unit is used for determining that the polarization characteristic of the first position is linear polarization when the first phase difference is 0 DEG or 180 DEG or-180 DEG;

at the first amplitude ratio not equal to 1; alternatively, when the first amplitude ratio is equal to 1 and the first phase difference is not 0 ° or 180 ° or-180 ° or 90 ° or-90 °, the control unit is configured to determine that the polarization characteristic of the first position is elliptical polarization.

8. The measurement system of claim 1, wherein the measurement system comprises a sensor,

polarization characteristics of the first antenna and the second antenna are orthogonal to each other;

the planes of the n standard antenna pairs are perpendicular to the rotation plane of the rotatable clamp.

9. The measurement system of claim 1, wherein the measurement system comprises a sensor,

the n standard antenna pairs comprise a first standard antenna pair and a second standard antenna pair, and the second standard antenna pair also comprises the first antenna and the second antenna;

the measurement system is also used for measuring polarization characteristics of the second standard antenna pair corresponding to the second position.

10. The measurement system of claim 1, wherein the measurement system further comprises: an analysis unit;

the first input end of the analysis unit is connected with the first output end of the switching unit, and the second input end of the analysis unit is connected with the second output end of the switching unit; the output end of the analysis unit is connected with the control unit;

The analysis unit is also connected with the control unit through a control port;

the measurement system is also used for measuring the polarization characteristics of the transmitting frequency band of the antenna to be measured;

the rotatable clamp is used for clamping the electronic equipment;

the first antenna is used for generating a first receiving signal; the switching unit is used for outputting the first receiving signal from the first output end to the analysis unit;

the second antenna is used for generating a second receiving signal; the switching unit is used for outputting the second receiving signal from the second output end to the analysis unit;

The first antenna and the second antenna generate corresponding receiving signals according to electromagnetic waves in a surrounding space, and the electromagnetic waves in the surrounding space are emitted by the electronic equipment through the antenna to be detected;

the analysis unit is used for determining a second amplitude ratio and a second phase difference according to the first received signal and the second received signal; the second amplitude ratio and the second phase difference correspond to a second frequency point to be detected respectively, and the second frequency point to be detected is included in a transmitting frequency band of the second frequency band;

the control unit is further used for determining polarization characteristics at a first position when the antenna to be tested works at a second frequency point to be tested according to the second amplitude ratio and the second phase difference; the first position is the position where the center position of the first standard antenna is located.

11. A method of measuring polarization properties, characterized in that the method is applied to a measuring system according to any one of claims 1-10; the method is used for measuring polarization characteristics of the antenna to be measured when the antenna to be measured works in a receiving frequency band;

the method comprises the following steps:

generating a first excitation signal;

exciting a first antenna in a first standard antenna pair to radiate according to the first excitation signal; acquiring a first RSSI measured by the electronic equipment provided with the antenna to be measured;

Exciting a second antenna in the first standard antenna pair to radiate according to the first excitation signal; acquiring a second RSSI measured by the electronic equipment through the antenna to be measured;

determining a first amplitude ratio according to the first RSSI and the second RSSI;

generating a second excitation signal and a third excitation signal according to the first excitation signal; the amplitude and phase of the second excitation signal are the same as those of the first excitation signal; the amplitude of the second excitation signal is the product of the amplitude of the third excitation signal and the first amplitude ratio; the phase difference between the phase of the third excitation signal and the phase of the second excitation signal is a first value;

exciting the first antenna to radiate according to the second excitation signal, and exciting the second antenna to radiate according to the third excitation signal;

acquiring a third RSSI, wherein the third RSSI is obtained by measuring surrounding electromagnetic waves received by the electronic equipment through the antenna to be measured;

determining a first phase difference according to the third RSSI; the first phase difference corresponds to the first position;

and determining polarization characteristics of the antenna to be measured at a first position when the antenna to be measured works at a first frequency point to be measured according to the first amplitude ratio and the first phase difference.

12. The method of claim 11, wherein the step of determining the position of the probe is performed,

the determining the first phase difference according to the third RSSI includes:

determining the first value as the first phase difference if the third RSSI reaches a target threshold; the target threshold corresponds to the first RSSI;

the target threshold corresponds to the first RSSI, including:

the target threshold is。

13. The method of claim 12, wherein the step of determining the position of the probe is performed,

in the case that the third RSSI is less than the target threshold, the method further comprises:

adjusting a phase difference of the third excitation signal and the second excitation signal to a second value, the second value being different from the first value; re-acquiring the third RSSI;

and determining the second value as the first phase difference in the case that the re-acquired third RSSI reaches the target threshold.

14. The method according to any one of claims 11-13, wherein prior to the generating the second excitation signal and the third excitation signal, the method further comprises:

the first value is determined.

15. The method of claim 14, wherein the determining the first value comprises:

Generating a fourth excitation signal, wherein the fourth excitation signal has the same amplitude as the third excitation signal, and the fourth excitation signal has the same phase as the second excitation signal;

exciting the first antenna to radiate by the second excitation signal, and exciting the second antenna to radiate by the fourth excitation signal;

acquiring a fourth RSSI, wherein the fourth RSSI is obtained by measuring the electromagnetic wave radiated by the electronic equipment through the antenna to be measured and receiving the electromagnetic wave radiated by the first standard antenna;

determining the first value as。

16. The method of claim 15, wherein upon determining that the antenna under test is operating at a first frequency point under test, after the polarization characteristic at the first location, the method further comprises:

determining polarization characteristics of the antenna to be tested at a second position when the antenna to be tested works at a first frequency point to be tested; the second location is a location corresponding to a second standard antenna pair, the second standard antenna pair being included in the n standard antenna pairs.

17. The method of claim 16, wherein after determining the polarization characteristics for each of the n standard antenna pairs at the corresponding location, the method further comprises:

And controlling the rotatable clamp to rotate from the current first posture to the second posture, and measuring the polarization characteristic of the corresponding position of each of the n standard antenna pairs again.

18. A method of measuring polarization characteristics, characterized in that the method is applied to the measurement system of claim 10; the method is used for measuring polarization characteristics of the antenna to be measured when the antenna to be measured works in a transmitting frequency band;

the method comprises the following steps:

a first antenna of the first standard antenna pair receives electromagnetic waves radiated by an antenna to be tested and generates a first receiving signal;

the second antenna of the first standard antenna pair receives electromagnetic waves radiated by the antenna to be detected and generates a second receiving signal;

the analysis unit acquires the first received signal and the second received signal through the switching unit;

determining a second amplitude ratio and a second phase difference from the first received signal and the second received signal; the second amplitude ratio and the second phase difference correspond to a second frequency point to be detected respectively, and the second frequency point to be detected is included in a transmitting frequency band of the working frequency band of the antenna to be detected;

determining polarization characteristics of the antenna to be measured at a first position when the antenna to be measured works at a second frequency point to be measured according to the second amplitude ratio and the second phase difference; the first position is the position where the center position of the first standard antenna is located.

19. The method of claim 18, wherein upon determining that the antenna under test is operating at a second frequency point under test, after the polarization characteristic at the first location, the method further comprises:

determining polarization characteristics of the antenna to be tested at a second position when the antenna to be tested works at a second frequency point to be tested; the second position is a position corresponding to a second standard antenna pair, and the second standard antenna pair is included in n standard antenna pairs;

after determining the polarization characteristics of the corresponding locations of each of the n standard antenna pairs, the method further comprises: