WO2023016571A1

WO2023016571A1 - Radio frequency index measurement method, apparatus and system, electronic device, and storage medium

Info

Publication number: WO2023016571A1
Application number: PCT/CN2022/112527
Authority: WO
Inventors: 庄言春; 杨华; 张飞越; 吕婧任; 金鹤飞; 赵志勇; 冯卫东; 吴健
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-08-13
Filing date: 2022-08-15
Publication date: 2023-02-16
Also published as: CN115913421A

Abstract

The present application discloses a radio frequency index measurement method, comprising: determining a Rayleigh resolution of a target array antenna; determining a sampling point of the target array antenna in a spherical coordinate system according to the Rayleigh resolution and a normalized wave vector space algorithm; measuring an EIRP of the target array antenna at the sampling point; and calculating a radio frequency index of the target array antenna according to the EIRP and the normalized wave vector space algorithm. Also disclosed in embodiments of the present application are a radio frequency index measurement apparatus and system, an electronic device, and a storage medium.

Description

Radio frequency index measurement method, device, system, electronic equipment and storage medium

This application claims priority to a Chinese patent application with application number 202110932798.3 filed on August 13, 2021, the entire contents of which are incorporated herein by reference.

technical field

The embodiments of the present application relate to the technical field of communications, and in particular to a method, device, system, electronic equipment, and storage medium for measuring radio frequency indicators.

Background technique

With the development of 5G communication technology, the large-scale array antenna technology with the oscillator size reaching the millimeter level can be applied to 5G communication products. The design of millimeter-wave circuits and the application of large-scale phased array antennas require the integration of the antenna and the remote radio unit (Radio Remote Unit, RRU) to form an active antenna system (Active Antenna System, AAS). The 3GPP (3rd Generation Partnership Project) standard stipulates that the AAS base station belongs to 2-O type 5G equipment, and its radio frequency indicators must be measured in a dark room through the air interface (Over the Air, OTA).

However, when measuring the ACLR (Adjacent Channel Leakage Ratio, adjacent channel leakage power ratio) and spurious two radio frequency indicators of the array antenna, in order to obtain more accurate measurement results, the sampling step is set to be small, so that the sampling Too many points, resulting in lower efficiency in measuring ACLR and spurs.

Contents of the invention

The main purpose of the embodiment of the present application is to provide a radio frequency index measurement method, device, system, electronic equipment and storage medium, which can improve the efficiency of measuring the ACLR and spurious of the array antenna.

In order to achieve the above purpose, the embodiment of the present application provides a radio frequency index measurement method, including: determining the Rayleigh resolution of the target array antenna; The sampling point of the system; measure the EIRP (Equivalent Isotropic Radiated Power, equivalent isotropic radiated power) of the target array antenna at the sampling point; calculate the radio frequency index of the target array antenna according to the EIRP and the normalized wave vector space algorithm.

In order to achieve the above purpose, the embodiment of the present application also provides a radio frequency index measurement device, including: a first determination module, used to determine the Rayleigh resolution of the target array antenna; a second determination module, used to determine the Rayleigh resolution according to the Rayleigh resolution and the normalized wave vector space algorithm to determine the sampling point of the target array antenna in the spherical coordinate system; the measurement module is used to measure the EIRP of the target array antenna at the sampling point; the calculation module is used to calculate according to the EIRP and the normalized wave vector space algorithm The radio frequency index of the target array antenna is calculated.

In order to achieve the above purpose, the embodiment of the present application also provides a radio frequency index measurement system, including a device under test, a test antenna system, a power detector and a test machine, and the device under test includes an integrated array antenna and a remote radio frequency unit , the testing machine is respectively connected to the device under test, the test antenna system and the power detector, and the power detector is connected to the test antenna system; the test machine is used to determine the Rayleigh resolution of the array antenna; according to the Rayleigh resolution and the normalized wave vector The space algorithm determines the sampling point of the array antenna in the spherical coordinate system; controls the device under test, the test antenna system and the power detector to measure the EIRP of the array antenna at the sampling point; calculates the radio frequency of the array antenna according to the EIRP and the normalized wave vector space algorithm index.

To achieve the above purpose, an embodiment of the present application further provides an electronic device, including: at least one processor; and a memory connected to the at least one processor in communication; wherein, the memory stores instructions that can be executed by the at least one processor , the instructions are executed by at least one processor, so that the at least one processor can execute the above radio frequency index measurement method.

To achieve the above object, an embodiment of the present application further provides a computer-readable storage medium storing a computer program, and implementing the above radio frequency index measurement method when the computer program is executed by a processor.

The radio frequency indicator measurement method proposed in this application, by determining the Rayleigh resolution of the target array antenna, according to the Rayleigh resolution and the normalized wave vector space algorithm to determine the sampling point of the target array antenna in the spherical coordinate system, and measure the target array antenna in the The EIRP of the sampling point is calculated according to the EIRP normalized wave vector space algorithm to obtain the radio frequency index of the target array antenna. The sampling points of the array antenna in the spherical coordinate system are determined by the Rayleigh resolution and the normalized wave vector space algorithm, which can effectively reduce the sampling points while ensuring the accuracy of the measurement results, thereby improving the ACLR and spurious of the measurement array antenna s efficiency.

Description of drawings

One or more embodiments are exemplified by pictures in the accompanying drawings, and these exemplifications are not intended to limit the embodiments.

Fig. 1 is a schematic flow chart of the radio frequency indicator measurement method provided by the embodiment of the present application;

2 is a schematic diagram of a spherical coordinate system with the target array antenna as a reference point in the radio frequency index measurement method provided by the embodiment of the present application;

Figure 3 is a schematic diagram of sampling at intervals of Rayleigh resolution in angular space;

Fig. 4 is a schematic diagram of sampling at intervals of Rayleigh resolution in wave vector space;

Fig. 5 is a schematic diagram of the positions corresponding to the sampling points in the wave vector space in Fig. 4 in the spherical coordinate system;

Fig. 6 is the spectrum curve of the spurious signal near the working channel of a 5G base station measured by the radio frequency index measurement method provided by the embodiment of the present application;

Fig. 7 is a radio frequency indicator measurement method provided by the embodiment of the present application when measuring a spurious curve of a 5G base station in a frequency band specified by 3GPP;

Fig. 8 is a schematic diagram of the module structure of the radio frequency indicator measurement device provided by the embodiment of the present application;

FIG. 9 is a schematic structural diagram of a radio frequency index measurement system provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in each embodiment of the application, many technical details are provided for readers to better understand the application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can also be realized. The division of the following embodiments is for the convenience of description, and should not constitute any limitation to the specific implementation of the present application, and the embodiments can be combined and referred to each other on the premise of no contradiction.

In one embodiment, it relates to a radio frequency index measurement method, by determining the Rayleigh resolution of the target array antenna, and determining the sampling points of the target array antenna in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm, Measure the EIRP of the target array antenna at the sampling point, and calculate the radio frequency index of the target array antenna according to the EIRP normalized wave vector space algorithm. The sampling points of the array antenna in the spherical coordinate system are determined by the Rayleigh resolution and the normalized wave vector space algorithm, which can effectively reduce the sampling points while ensuring the accuracy of the measurement results, thereby improving the ACLR and spurious of the measurement array antenna s efficiency.

The specific flow of the radio frequency index measurement method provided in the embodiment of the present application is shown in Figure 1. The radio frequency index measurement method includes:

S101: Determine the Rayleigh resolution of the target array antenna.

The specific size of the array antenna of the target array antenna AAS is not specifically limited here.

When determining the Rayleigh resolution of the target array antenna, it may be to determine the Rayleigh resolution of the target array antenna in wave vector space. The Rayleigh resolution (u, v) of the wave vector space can be obtained by the following formula (1):

Among them, u _{r, min} is the minimum Rayleigh resolution corresponding to the y direction of the target array antenna in the wave vector space, v _{r, min} is the minimum Rayleigh resolution corresponding to the z direction of the target array antenna in the wave vector space, λ is The signal wavelength, D _{y, max} and D _{z, max} are the maximum antenna apertures corresponding to the target array antenna in the y-axis direction and the z-axis direction of the spherical coordinate system, respectively.

S102: Determine the sampling points of the target array antenna in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm.

Please refer to FIG. 2 , which is a schematic diagram of a spherical coordinate system with the target array antenna as a reference point. The x-axis is basically consistent with the normal direction of the antenna array of the target array antenna, and the y-axis and z-axis correspond to the horizontal and vertical directions respectively. Two kinds of space coordinates are used here to describe the direction: one is the angle space, using the spherical coordinate system

To express, for example, when the wave vector direction is marked as (90°, 0°), it means pointing to the x-axis direction; the other is the normalized wave vector space, using (u, v) in the Cartesian coordinate system to represent, where u and v represent the size of the normalized wave vector projection on the y-axis and z-axis, respectively. For example, when the wave vector direction is marked as (0, 0), it means pointing to the x-axis direction. angle space

There is the following conversion relationship with the normalized wave vector space (u, v):

v = cos θ.

Determine the sampling interval (Δu, Δv) of the wave vector space according to the Rayleigh resolution of the wave vector space, so that the sampling interval (Δu, Δv) is less than or equal to the minimum Rayleigh resolution, that is: Δu≤ur _{, min} , Δv≤ v _{r, min} .

In the wave vector space, M uniform sampling points can be determined with (Δu, Δv) as the sampling interval, and the M uniform sampling points in the wave vector space can be converted into spherical coordinate system angles according to the conversion relationship between the normalized wave vector space and the angle space Sampling points in the space, M uniform sampling points (u _i , v _i ) can be mapped to M non-uniform sampling points in the angular space of the spherical coordinate system through conversion

i∈M, M is a positive integer.

S103: Measure the EIRP of the target array antenna at the sampling point.

When measuring the EIRP of the target array antenna at the sampling point, the test antenna can be connected to M non-uniform sampling points

Coincidence, so as to measure the EIRP of the target array antenna at these sampling points.

S104: Calculate and obtain the radio frequency index of the target array antenna according to the EIRP and the normalized wave vector space algorithm.

In this embodiment of the present application, the radio frequency index of the target array antenna may include ACLR and spurs. The specific steps in S103 and S104 for the ACLR and spurious radio frequency indicators will be described respectively below.

When the radio frequency index is ACLR, S103 may include: measuring the EIRP _T , EIRP _L and EIRP _R of the target array antenna at each sampling point, where EIRP _T is the output EIRP within the bandwidth, and EIRP _L is the left adjacent channel leakage EIRP, EIRP _R is the leakage EIRP of the right adjacent channel; and S104 includes: according to the normalized wave vector space algorithm, EIRP _T , EIRP _L and EIRP _R are respectively integrated and accumulated into TRP _T , TRP _L and TRP _R ; according to ACLR _L =TRP _L -TRP _T calculates the left side ACLR of the target array antenna, calculates and obtains the right side ACLR of the target array antenna according to ACLR _R =TRP _R -TRP _T , thus obtains ACLR by measurement and calculation under the situation of reducing sampling points, improves The measurement efficiency of ACLR, where TRP _T is the TRP (Total Radiated Power) output within the bandwidth, TRP _L is the leakage TRP of the left adjacent channel, and TRP _R is the leakage TRP of the right adjacent channel.

When measuring EIRP _T , EIRP _L and EIRP _R at each sampling point, the power detector connected to the test antenna can be configured so that it can simultaneously obtain EIRP _T , EIRP _L and EIRP _R .

In one embodiment, EIRP _T , EIRP _L and EIRP _R are respectively integrated and accumulated into TRP _T , TRP _L and TRP _R according to the normalized wave vector space algorithm, including:

according to

compute TRP _T ;

according to

Calculate TRP _L ;

according to

Calculate TRP _R ;

Among them, Vu and Vv are the sampling intervals of the wave vector space, EIRP _{T, i} is the EIRP _T of the i-th sampling point, i∈M, M is a positive integer, EIRP _{L, i} is the EIRP _L of the i-th sampling point, EIRP _{R, i} is the EIRP _R of the ith sampling point, θ _i and

is the angle value of the i-th sampling point in the spherical coordinate system.

When the radio frequency index is spurious, S103 can include: determine spectrum test point according to the spectrum bandwidth of the spurious signal to be measured; Measure the EIRP of target array antenna at each sampling point according to each spectrum test point; S104 can include: according to The EIRP of all sampling points and the normalized wave vector sampling algorithm count the spurious TRP of each spectrum test point.

In an embodiment, after counting the stray TRP of each spectrum test point according to the EIRP of all sampling points and the normalized wave vector sampling algorithm, it may also include: drawing the target array according to the stray TRP of each spectrum test point The spurious TRP spectrum curve of the antenna in the spectrum bandwidth.

By counting the stray TRP of each spectrum test point according to the EIRP of all sampling points and the normalized wave vector sampling algorithm, draw the stray TRP spectrum curve of the target array antenna in the spectrum bandwidth according to the stray TRP of each spectrum test point, The spurious TRP and the TRP spectrum curve can be obtained by measuring and calculating while reducing the sampling points, so as to improve the efficiency of spurious measurement.

In a specific example, measuring the EIRP of the target array antenna at each sampling point according to each spectrum test point includes: when measuring the EIRP of the target array antenna at a sampling point, measuring the EIRP of all spectrum test points at the sampling point After EIRP, go to the next sampling point for measurement until all the sampling points are measured.

Conventionally, when measuring the spurs of an array antenna, a serial measurement method is usually used, that is, first measure the EIRP of a frequency point at each sampling point, and then measure the EIRP of the next frequency point at each sampling point after measuring a frequency point . Since there are usually hundreds or even thousands of frequency points to be measured, if one frequency point is measured in one round, the conventional measurement method needs to go through hundreds or thousands of rounds to complete. When measuring the EIRP of the array antenna at different sampling points, it is necessary to control and change the orientation of the turntable supporting the array antenna and the bracket supporting the test antenna, and it takes a long time to change the orientation, so the serial measurement method will reduce the overall consumption. Very long. However, the radio frequency index measurement method provided by the embodiment of the present application, when measuring the EIRP of the target array antenna at a sampling point, after measuring the EIRP of all spectrum test points at the sampling point, turn to the next sampling point for measurement. The method called parallel measurement can measure the EIRP corresponding to hundreds or thousands of spectrum test points in one round of measurement, which greatly improves the efficiency of spurious measurement.

In one embodiment, the TRP of each spectrum test point is counted according to the EIRP of all the sampling points and the normalized wave vector sampling algorithm, including:

according to

The TRP of each spectrum test point is calculated in parallel, so as to realize the TRP statistics of each spectrum test point and facilitate the drawing of the TRP spectrum curve. Among them, TRP _j is the TRP of the j-th spectrum test point, Vu and Vv are the sampling intervals of the wave vector space, i represents the i-th sampling point, i∈M, M is a positive integer, θ _i and

Since in one round of measurement, the EIRP of all spectrum test points at each sampling point has been measured, it can be passed

Simultaneous calculation (parallel calculation) of TRP for each spectral test point.

In conventional practice, because it adopts the method of serial measurement, it can only calculate the TRP of the frequency points one by one and then synthesize the spurious index, and the efficiency is low; and the radio frequency index measurement method provided by the embodiment of the present application, due to the use of parallel measurement Therefore, the TRP can be calculated through parallel computing, thereby improving the measurement efficiency of spurious indicators.

In one embodiment, determining the spectrum test point according to the spectrum bandwidth of the spurious signal to be tested includes:

according to

Determine the number of spectrum test points, where B _spurious is the spectrum bandwidth of the spurious signal to be tested, and RBW _spurious is the measurement resolution bandwidth specified by 3GPP; determine the spectrum test points according to the number of spectrum test points and the spectrum bandwidth.

Please refer to FIG. 3 , which is a schematic diagram of sampling at intervals of Rayleigh resolution in angular space. The background image is the radiation pattern of the 16×8 (y×z) array antenna with a half-wavelength period in the angular space, the sign "+" indicates the sampling point, and the Rayleigh resolution of the angular space

It can be determined according to the following formula:

Among them, D _y and D _z refer to the maximum size of the target array antenna in the y direction and the z direction. For common equal-amplitude and in-phase array antennas, the Rayleigh resolution can also be determined by the First Null Beamwidth (FNBW) of the pattern, namely:

_θr = FNBW _θ /2,

Please refer to Figure 4, which is a schematic diagram of sampling at intervals of Rayleigh resolution in the wave vector space. The antenna corresponding to the sampling point in the figure is also a 16×8 (y×z) array antenna with a half-wavelength period, marked with “+ ”Indicates the sampling points, and the sampling points are evenly distributed in this space. It should be understood that the sampling point must be guaranteed to be within a circle with a radius of 1 (that is, the normalized wave vector space), because the field that can be measured in the far field is the radiation component, and the field outside the circle evanescent The wave components are truncated in the far field due to their exponential decay with distance.

Please refer to FIG. 5 , which is a schematic diagram of the corresponding positions of the sampling points in the wave vector space in FIG. 4 in the spherical coordinate system, where the sign "+" indicates the sampling points. It can be seen from Figure 5 that the sampling points are non-uniformly distributed in the spherical coordinate system, and compared with the sampling points in Figure 3, the number of points has been significantly reduced (about 1/3 of that in Figure 3). However, Figure 4 and Figure 5 correspond to the same antenna array as Figure 3, and the results of Figure 4 and Figure 5 have fewer sampling points in the wave vector space and higher efficiency. In one embodiment, since there is a Fourier transform relationship between the wave vector space and the corresponding space of the array antenna, sampling in the wave vector space is the method with the least number of points, which can also be called the optimal sampling scheme.

Please refer to FIG. 6 , which shows the spectrum curve of the spurious signal near the working channel of a 5G base station measured by the radio frequency index measurement method provided by the embodiment of the present application. Wherein, the spurious frequency band bandwidth B _spurious is 800MHz, and the resolution bandwidth RBW _spurious of the power detector is set to 1MHz. For data comparison, the EIRP curve of the sampling point directly in front of the antenna array is superimposed in the figure.

Please refer to FIG. 7 , which shows the radio frequency index measurement method provided by the embodiment of the present application when measuring the spurious curve of a 5G base station in a frequency band specified by 3GPP. Among them, the spurious frequency band bandwidth B _spurious is 6.25GHz (18000-24250MHz), and the resolution bandwidth RBW _spurious of the power detector is set to 10MHz. For data comparison, the EIRP curve of the sampling point directly in front of the antenna array is superimposed in the figure. Logo in the picture

where is the detected abnormal spurious signal.

Spurious measurement has always been a difficult problem in the radio frequency index test of AAS base station equipment. If the traditional accurate measurement method given by 3GPP TR37.843 is used, it takes 68 days to complete a complete frequency band spurious measurement. In 3GPP TS38.141-2 (Chapter I.13), a scheme to improve the efficiency of spurious measurement by pre-scanning (Pre-scan) is given, but in this scheme, pre-scanning cannot accurately give each target frequency point In actual operation, it is easy to cause misjudgment and missed measurement, which will affect the credibility of the measurement results. In addition, the industry has also proposed a spurious measurement method based on a reverberation chamber: the stirring blade is used to uniformly reflect the directional beam energy in the closed space, and the transmitted signal is collected at a specific position in the closed space. After calibration, the measured The TRP of the device, and then sweep the frequency in the frequency band to be tested to obtain the spurious spectrum. However, the reverberation chamber method relies too much on system calibration, and recalibration is required for different devices under test (DUT) or different installation locations of the devices under test, which affects test efficiency. In addition, according to the test experience, the measurement of broadband signals in the reverberation room is prone to spectrum fluctuations, which will affect the accuracy of spurious measurement results.

The embodiment of the present application determines the sampling points in the spherical angle coordinate system based on the Rayleigh resolution and the normalized wave vector space algorithm; The spurious TRP spectrum is derived for the entire measured frequency band. Using the radio frequency index measurement method provided in the embodiment of the present application, the measurement time for the broadband spuriousness of the 128-element antenna array device is about 10 minutes. Compared with the traditional precise measurement method, the radio frequency index measurement method provided by the embodiment of the application can improve the measurement efficiency of the spur by more than 3 orders of magnitude; compared with the conventional serial measurement calculation method, in the case of using wave vector sampling, the application The parallel measurement and calculation method adopted in the embodiment can significantly improve the measurement efficiency of multi-frequency radio frequency indicators (such as spurious indicators) (Table 1 below):

Compared with the pre-scan method and the reverberation chamber method, the measurement efficiency of the radio frequency index measurement method provided in the embodiment of the present application is similar to the former two, but the radio frequency index measurement method provided in the embodiment of the present application uses a non-destructive sampling algorithm, so its The reliability and accuracy of the measurement results are much higher than the former two.

The radio frequency index measurement method provided by the embodiment of this application, by determining the Rayleigh resolution of the target array antenna, according to the Rayleigh resolution and the normalized wave vector space algorithm to determine the sampling point of the target array antenna in the spherical coordinate system, and measure the target array The EIRP of the antenna at the sampling point is calculated according to the EIRP normalized wave vector space algorithm to obtain the radio frequency index of the target array antenna. The sampling points of the array antenna in the spherical coordinate system are determined by the Rayleigh resolution and the normalized wave vector space algorithm, which can effectively reduce the sampling points while ensuring the accuracy of the measurement results, thereby improving the ACLR and spurious of the measurement array antenna s efficiency.

In addition, those skilled in the art can understand that the division of the steps of the various methods above is only for the sake of clarity of description, and can be combined into one step or split into multiple steps during implementation, as long as the same logical relationship is included , are all within the protection scope of this patent; adding insignificant modifications or introducing insignificant designs to the algorithm or process, but not changing the core design of its algorithm and process are all within the protection scope of this patent.

In one embodiment, it relates to a radio frequency index measuring device 200, as shown in FIG. The detailed function of each module is as follows:

The first determination module 201 is configured to determine the Rayleigh resolution of the target array antenna;

The second determination module 202 is used to determine the sampling point of the target array antenna in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm;

Measurement module 203, for measuring the EIRP of the target array antenna at the sampling point;

The calculation module 204 is configured to calculate the radio frequency index of the target array antenna according to the EIRP and the normalized wave vector space algorithm.

In one embodiment, the measurement module 203 is also used to: measure the EIRP _T , EIRP _L and EIRP _R of the target array antenna at each sampling point, where EIRP _T is the EIRP output within the bandwidth, and EIRP _L is the left neighbor channel leakage EIRP, EIRP _R is the right adjacent channel leakage EIRP;

The calculation module 204 is also used to: integrate and accumulate EIRP _T , EIRP _L and EIRP _R into TRP _T , TRP _L and TRP _R respectively according to the normalized wave vector space algorithm; calculate the target array according to ACLR _L =TRP _L -TRP _T For the left ACLR of the antenna, the right ACLR of the target array antenna is calculated according to ACLR _R =TRP _R -TRP _T , where TRP _T is the output TRP within the bandwidth, TRP _L is the left adjacent channel leakage TRP, and TRP _R is the right Side channel leakage TRP.

In an embodiment, the calculation module 204 is also used for:

according to

compute TRP _T ;

according to

Calculate TRP _L ;

according to

Calculate TRP _R ;

In one embodiment, the measurement module 203 is also used to: determine the spectrum test point according to the spectrum bandwidth of the spurious signal to be measured; measure the EIRP of the target array antenna at each sampling point according to each spectrum test point;

The calculation module 204 is further configured to: calculate the spurious TRP of each spectrum test point according to the EIRP of all sampling points and the normalized wave vector sampling algorithm.

In an embodiment, the calculation module 204 is further configured to: plot a spurious TRP spectrum curve of the target array antenna in the spectrum bandwidth according to the spurious TRP of each spectrum test point.

In an embodiment, the measurement module 203 is further configured to measure the EIRP of all spectrum test points at the sampling point when measuring the EIRP of the target array antenna at the sampling point, and then go to the next sampling point for measurement.

In an embodiment, the calculating module 204 is also used for: according to

Calculate the TRP of each spectrum test point in parallel, where TRP _j is the TRP of the jth spectrum test point, Vu and Vv are the sampling intervals of the wave vector space, i represents the i-th sampling point, i∈M, and M is a positive integers, θ _i and

In an embodiment, the measuring module 203 is also used for: according to

It is not difficult to find that this embodiment is an apparatus embodiment corresponding to the foregoing method embodiments, and this embodiment can be implemented in cooperation with the foregoing method embodiments. The relevant technical details mentioned in the foregoing method embodiments are still valid in this embodiment, and are not repeated here to reduce repetition. Correspondingly, the relevant technical details mentioned in this embodiment may also be applied to the foregoing method embodiments.

It is worth mentioning that all the modules involved in this embodiment are logical modules. In practical applications, a logical unit can be a physical unit, or a part of a physical unit, or multiple physical units. Combination of units. In addition, in order to highlight the innovative part of the present application, units that are not closely related to solving the technical problem proposed in the present application are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.

In one embodiment, it relates to a radio frequency index measurement system 300, as shown in FIG. The device under test 310 includes an integrated array antenna 312 and a remote radio unit (RRU) 311, and the testing machine 330 is respectively connected to the device under test 310, the test antenna system 320 and the power detector 340, and the power detector 340 and the test antenna system 320 connections.

The testing machine 330 is used to determine the Rayleigh resolution of the array antenna 312; determine the sampling points of the array antenna 312 in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm; control the device under test 310, test the antenna system 320 The power detector 340 measures the EIRP of the array antenna 312 at the sampling point; calculates the radio frequency index of the array antenna 312 according to the EIRP and the normalized wave vector space algorithm.

The array antenna 312 is closely integrated with the remote radio frequency unit 311 to form an integrated device, as shown by the dotted line. The transmit and receive channels of the device under test 310 are directly connected to the array antenna 312 as opposed to the RRU and antenna system being individually and independently testable. The array antenna 312 may be an antenna arranged in a matrix, or other irregularly arranged antennas, and the radiated electromagnetic wave energy may be in the millimeter wave band.

Since the array antenna 312 is integrated with the remote radio frequency unit 311 and has no radio frequency connection, the array antenna cannot be tested in isolation. That is to say, the radiation performance of the array antenna 312 and the transmission and reception link performance of the remote radio unit 311 cannot be simply tested to calculate the radio frequency index (including EIRP, TRP, equivalent isotropic sensitivity (Equivalent Isotropic Sensitivity, EIS) and Total Isotropic Sensitivity (Total Isotropic Sensitivity, TIS) and other radio frequency machine indicators), the measurement of the device under test 310 needs to be performed simultaneously.

The device under test 310 is placed and fixed on the turntable 313, and the turntable 313 can rotate on the horizontal plane and the pitch plane. The test antenna system 320 includes a test antenna 321 , an antenna fixing bracket 323 and a test cable 322 . The test antenna 321 can be a single antenna, or multiple antennas. The antenna fixing bracket 323 is used to fix the test antenna 321 and can move in three-dimensional space. The test antenna 321 is connected to a power detector 340 through a test cable 322, and the power detector 340 may be a vector network analyzer, a spectrum analyzer or a power meter, etc.

The device under test 310, the turntable 313, the antenna fixing bracket 323 and the power detector 340 are connected to the testing machine 330, and the testing machine 330 can be set to control the sending and receiving of the device under test 310, the rotation of the turntable 313, and the rotation of the antenna fixing bracket 323. The mobile and power detector 340 sends and receives, records and processes relevant test data including the EIRP value, and records a log.

During the whole test process, the environment of the fully anechoic chamber is isolated from the external environment by the absorbing material 350 and the outer wall of the anechoic chamber 360 to simulate the situation of an infinite space.

In one embodiment, the testing machine 330 is also used to: measure the EIRP _T , EIRP _L and EIRP _R of the array antenna 312 at each sampling point, where EIRP _T is the EIRP output within the bandwidth, and EIRP _L is the left neighbor channel leakage EIRP, EIRP _R is the right adjacent channel leakage EIRP; according to the normalized wave vector space algorithm, EIRP _T , EIRP _L and EIRP _R are respectively integrated and accumulated into TRP _T , TRP _L and TRP _R ; according to ACLR _L = TRP _L -TRP _T calculates the left side ACLR of the array antenna 312, and calculates the right side ACLR of the array antenna 312 according to ACLR _R =TRP _R -TRP _T , wherein, TRP _T is the TRP output in the bandwidth, and TRP _L is the left adjacent channel Leakage TRP, TRP _R is the leakage TRP of the right adjacent channel.

In one embodiment, the testing machine 330 is also used for:

according to

compute TRP _T ;

according to

Calculate TRP _L ;

according to

Calculate TRP _R ;

In one embodiment, the testing machine 330 is also used to: determine the spectrum test point according to the spectrum bandwidth of the spurious signal to be tested; measure the EIRP of the array antenna 312 at each sampling point according to each spectrum test point; EIRP and normalized wave vector sampling algorithm count the spurious TRP of each spectrum test point.

In an embodiment, the testing machine 330 is further configured to draw a spurious TRP spectrum curve of the array antenna 312 in the spectrum bandwidth according to the spurious TRP of each spectrum test point.

In an embodiment, the testing machine 330 is also used to measure the EIRP of all spectrum test points at the sampling point when measuring the EIRP of the target array antenna at the sampling point, and then go to the next sampling point for measurement.

In one embodiment, the testing machine 330 is also used for: according to

It is not difficult to find that this embodiment is a system embodiment corresponding to the foregoing method embodiments, and this embodiment can be implemented in cooperation with the foregoing method embodiments. The relevant technical details mentioned in the foregoing method embodiments are still valid in this embodiment, and will not be repeated here in order to reduce repetition. Correspondingly, the relevant technical details mentioned in this embodiment may also be applied to the foregoing method embodiments.

In one embodiment, it relates to an electronic device, as shown in FIG. 10 , including: at least one processor 401; and a memory 402 communicatively connected to at least one processor 401; Instructions executed by the processor 401, the instructions are executed by at least one processor 401, so that the at least one processor 401 can execute the above radio frequency index measurement method.

Wherein, the memory and the processor are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors and various circuits of the memory together. The bus may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and therefore will not be further described herein. The bus interface provides an interface between the bus and the transceivers. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna, further, the antenna also receives the data and transmits the data to the processor.

The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, memory can be used to store data that the processor uses when performing operations.

In one embodiment, it relates to a computer readable storage medium storing a computer program. The above method embodiments are implemented when the computer program is executed by the processor.

That is, those skilled in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, the program is stored in a storage medium, and includes several instructions to make a device ( It may be a single-chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes can be made to it in form and details without departing from the spirit and spirit of the present application. scope.

Claims

A radio frequency index measurement method, including:

Determine the Rayleigh resolution of the target array antenna;

determining the sampling points of the target array antenna in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm;

Measuring the equivalent isotropic radiated power EIRP of the target array antenna at the sampling point;

The radio frequency index of the target array antenna is calculated according to the EIRP and the normalized wave vector space algorithm.
The radio frequency index measurement method according to claim 1, wherein said measuring the EIRP of said target array antenna at said sampling point comprises:

Measure the EIRP T , EIRP L , and EIRP R of the target array antenna at each of the sampling points, the EIRP T is the EIRP output within the bandwidth, the EIRP L is the leakage EIRP of the left adjacent channel, and the EIRP R is the leakage EIRP of the right adjacent channel;

The calculation according to the EIRP and the normalized wave vector space algorithm to obtain the radio frequency index of the target array antenna includes:

According to the normalized wave vector space algorithm, the EIRP T , EIRP L and EIRP R are respectively integrated and accumulated into TRP T , TRP L and TRP R , the TRP T is the total radiation power TRP within the bandwidth, and the TRP L is the leakage TRP of the left adjacent channel, and the TRP R is the leakage TRP of the right adjacent channel;

The left adjacent channel leakage power ratio ACLR of the target array antenna is calculated according to ACLR L =TRP L -TRP T , and the right ACLR of the target array antenna is calculated according to ACLR R =TRP R -TRP T.
The radio frequency index measurement method according to claim 2, wherein said EIRP T , EIRP L and EIRP R are respectively integrated and accumulated into TRP T , TRP L and TRP R according to the normalized wave vector space algorithm, include:

according to
calculating said TRP T ;

according to
calculating said TRP L ;

according to
calculating said TRP R ;

Wherein, the Vu and the Vv are the sampling intervals of the wave vector space, the EIRP T, i is the EIRP T of the ith sampling point, i∈M, the M is a positive integer, and the EIRP L, i is the EIRP L of the i-th sampling point, the EIRP R, i is the EIRP R of the i-th sampling point, the θ i and the
is the angle value of the i-th sampling point in the spherical coordinate system.
The radio frequency index measurement method according to claim 1, wherein said measuring the EIRP of said target array antenna at said sampling point comprises:

Determine the spectrum test point according to the spectrum bandwidth of the spurious signal to be tested;

Measuring the EIRP of the target array antenna at each of the sampling points according to each of the spectrum test points;

The calculation according to the EIRP and the normalized wave vector space algorithm to obtain the radio frequency index of the target array antenna includes:

According to the EIRP of all the sampling points and the normalized wave vector sampling algorithm, the spurious TRP of each spectrum test point is counted.
The radio frequency index measurement method according to claim 4, wherein, after the EIRP of all the sampling points and the normalized wave vector sampling algorithm are used to count the spurious TRP of each spectrum test point, further include:

Drawing a spurious TRP spectrum curve of the target array antenna in the spectrum bandwidth according to the spurious TRP of each spectrum test point.
The radio frequency index measurement method according to claim 4, wherein said measuring the EIRP of said target array antenna at each said sampling point according to each said spectrum test point comprises:

When measuring the EIRP of the target array antenna at a sampling point, after measuring the EIRP of all spectrum test points at the sampling point, go to the next sampling point for measurement.
The radio frequency index measurement method according to claim 6, wherein said counting the TRP of each spectrum test point according to the EIRP of all said sampling points and said normalized wave vector sampling algorithm comprises:

according to
Calculate the TRP of each spectrum test point in parallel, wherein, the TRP j is the TRP of the jth spectrum test point, the Vu and the Vv are the sampling intervals of the wave vector space, and the i represents the ith Sampling point, i∈M, said M is a positive integer, said θ i and said
is the angle value of the i-th sampling point in the spherical coordinate system.
The radio frequency index measurement method according to claim 7, wherein said determining the spectrum test point according to the spectrum bandwidth of the spurious signal to be measured comprises:

according to
Determine the number of spectrum test points, where B spurious is the spectral bandwidth of the spurious signal to be measured, and the RBW spurious is the measurement resolution bandwidth specified by 3GPP;

Determine a spectrum test point according to the number of spectrum test points and the spectrum bandwidth.
A radio frequency index measuring device, including:

A first determining module, configured to determine the Rayleigh resolution of the target array antenna;

The second determination module is used to determine the sampling points of the target array antenna in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm;

a measurement module, configured to measure the EIRP of the target array antenna at the sampling point;

A calculation module, configured to calculate the radio frequency index of the target array antenna according to the EIRP and the normalized wave vector space algorithm.
A radio frequency index measurement system, which includes a device under test, a test antenna system, a power detector and a test machine, the device under test includes an integrated array antenna and a remote radio frequency unit, and the test machine is connected to the The device under test, the test antenna system and the power detector, the power detector is connected to the test antenna system;

The testing machine is used to determine the Rayleigh resolution of the array antenna; determine the sampling point of the array antenna in the spherical coordinate system according to the Rayleigh resolution and the normalized wave vector space algorithm; control the tested The equipment, the test antenna system and the power detector measure the EIRP of the array antenna at the sampling point; calculate the radio frequency index of the array antenna according to the EIRP and the normalized wave vector space algorithm.
An electronic device, comprising:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can perform the operation described in any one of claims 1 to 8. RF index measurement method.
A computer-readable storage medium storing a computer program, wherein, when the computer program is executed by a processor, the radio frequency index measurement method according to any one of claims 1 to 8 is implemented.