CN112615687A - Phase calibration method and device of receiving channel and network equipment - Google Patents
Phase calibration method and device of receiving channel and network equipment Download PDFInfo
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Abstract
The embodiment of the invention discloses a phase calibration method and device of a receiving channel and network equipment, and relates to the field of communication. The phase calibration method of the receiving channel comprises the following steps: at least two receiving channels receive a single-frequency continuous wave signal and record the signal time delay of the single-frequency continuous wave signal of the receiving channels; acquiring the phase difference of the adjacent receiving channels according to the signal time delay of the adjacent receiving channels; acquiring the phase relation of the adjacent receiving channels according to the phase difference; and carrying out phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and a preset ideal time delay. The method is applied to the phase calibration process among receiving channels of the 5G millimeter wave phased array, and solves the problems of long calibration time and low result accuracy caused by the fact that phase calibration needs to be carried out by means of an external device in the prior art by realizing the self-sending and self-receiving of single-frequency continuous wave signals and calibrating the phase according to the corresponding phase relation.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a phase calibration method and device of a receiving channel and network equipment.
Background
The antenna phased array is an array formed by a plurality of radiation units, the phase and the amplitude of radio frequency signals of each radiation unit of the antenna phased array are controlled through a beam forming network, and the phase, the precision and the change of the phase of each radiation unit directly influence the performance of beam forming. Due to the influence of factors such as performance difference of devices, small distance between antenna units, strong mutual coupling, temperature change and the like, stability and consistency of all receiving channels of the phased array of the antenna are difficult to ensure in the using process, phase errors of different degrees often exist, the low side lobe characteristic of the phased array antenna is seriously influenced, and the phased array antenna even cannot normally work in serious cases. The existing method for solving the phase error between the receiving channels of the antenna phased array comprises the following steps: calibrating the phase of the receiving channel by using an additional measuring antenna phased array and a vector analyzer, calibrating the phase of the receiving channel by using an additional probe antenna and a vector analyzer,
however, since the phase calibration of the receiving channel of the antenna phased array requires the use of an additional measuring antenna phased array (or probe antenna) and a vector analyzer, and the use of an external device to perform calibration indicates that the signal is transmitted to an external environment, the test time of the whole phase calibration is long, and the signal is interfered during the transmission process, so that the accuracy of the phase calibration result is not high.
Disclosure of Invention
An object of embodiments of the present invention is to provide a method and an apparatus for calibrating a phase of a receiving channel, and a network device, which can shorten a time for calibrating a phase between receiving channels of an antenna phased array, and improve accuracy of phase calibration between the receiving channels, so that phases between the receiving channels of a 5G millimeter wave phased array are stable and consistent.
In order to solve the above technical problem, an embodiment of the present invention provides a phase calibration method for a receive channel, which is applied to a 5G millimeter wave phased array, and includes: at least two receiving channels receive a single-frequency continuous wave signal and record the signal time delay of the single-frequency continuous wave signal of the receiving channels; acquiring the phase difference of the adjacent receiving channels according to the signal time delay of the adjacent receiving channels; acquiring the phase relation of the adjacent receiving channels according to the phase difference; and carrying out phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and a preset ideal time delay.
The embodiment of the present invention further provides a phase calibration apparatus for a receiving channel, including:
the receiving channel module is used for receiving the single-frequency continuous wave signal;
the receiving channel module is used for sending single-frequency continuous wave signals to at least two receiving channel modules;
the phase comparison module is used for recording the signal time delay of the single-frequency continuous wave signal of the receiving channel and acquiring the phase difference of the adjacent receiving channels according to the signal time delay of the adjacent receiving channels;
the acquisition module is used for acquiring the phase relation of the adjacent receiving channels according to the phase difference;
and the calibration module is used for carrying out phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and the preset ideal time delay.
An embodiment of the present invention further provides a network device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the above-described method of phase calibration of a receive channel.
Compared with the prior art, in the phase calibration of each receiving channel of the 5G millimeter wave phased array, at least two receiving channels receive single-frequency continuous wave signals; recording the signal time delay of the single-frequency continuous wave signal of the receiving channel; acquiring the phase difference of adjacent receiving channels according to the signal time delay of the adjacent receiving channels; and acquiring the phase relation of adjacent receiving channels according to the phase difference, and performing phase calibration on the receiving channels according to the phase relation, the single-frequency continuous wave signals and the preset ideal time delay. By realizing the self-sending and self-receiving of the single-frequency continuous wave signals and calibrating the phase according to the corresponding phase relation, the 5G millimeter wave phased array can carry out self-checking inside without using an external device for phase calibration, and the problems of long phase calibration time and low accuracy of phase calibration results caused by the fact that the phase calibration between receiving channels of the antenna phased array needs to be carried out by using the external device in the prior art are solved.
In addition, a phase calibration method for receiving channels according to an embodiment of the present invention is a method for receiving a single-frequency continuous wave signal by at least two receiving channels, including: and controlling the connection relation between the transmitting channel and the receiving channels by switching a switch so that at least two receiving channels receive the single-frequency continuous wave signal. The technical scheme provided by the invention can control the connection relation between the receiving channels and the receiving channels by switching the switch, so that a plurality of receiving channels can be adopted to receive single-frequency continuous wave signals sent by one transmitting channel, the problem of inconsistency of the transmitting channel relative to the receiving channels is avoided, the time delay of the signals acquired by the method is more accurate, and the accuracy of phase calibration is improved.
In addition, a method for calibrating a phase of a receiving channel according to an embodiment of the present invention, where the obtaining a phase difference between adjacent receiving channels according to the signal delay of the adjacent receiving channels includes: acquiring the signal phase difference of the adjacent receiving channels; and acquiring the phase difference of the adjacent receiving channels according to the signal phase difference and the preset path time delay. The technical scheme provided by the invention can take the signal attenuation into account when the phase difference of the adjacent receiving channels is obtained, and avoids the influence of the signal attenuation of the 5G phased array on the phase difference of the adjacent receiving channels, so that the phase difference of the adjacent receiving channels obtained by the invention is closer to the actual use condition, and the accuracy of phase calibration is improved.
In addition, a method for calibrating a phase of a receiving channel according to an embodiment of the present invention, where the obtaining a phase relationship between adjacent receiving channels according to the phase difference includes: acquiring the path layout of the 5G millimeter wave phased array; acquiring the coupling phase difference of the 5G millimeter wave phased array according to the path layout; and acquiring the phase relation of the adjacent receiving channels according to the coupling phase difference and the phase difference. According to the technical scheme provided by the invention, the coupling phase difference among the receiving channels can be considered when the phase relation of the adjacent receiving channels is obtained, and the influence of the coupling phase difference among the receiving channels of the 5G phased array on the phase relation of the adjacent receiving channels is avoided, so that the obtained phase relation of the adjacent receiving channels is closer to the actual use condition, and the accuracy of phase calibration is improved.
In addition, in the method for calibrating a phase of a receiving channel according to an embodiment of the present invention, after acquiring a phase relationship between adjacent receiving channels according to the phase difference, normalization processing on the phase relationship is further included. The phase relation of each adjacent channel obtained by the technical scheme provided by the invention is relative to a specific reference position, so that the phase calibration error caused by different reference positions of the phase relation of the adjacent channels is avoided, and the accuracy of the phase calibration between the receiving channels can be improved.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a flowchart of a phase calibration method for a receiving channel according to a first embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a 5G millimeter wave phased array according to a first embodiment of the present invention;
fig. 3 is a flowchart of a phase calibration method for a receiving channel according to a second embodiment of the present invention;
fig. 4 is a flowchart of a phase calibration method for a receiving channel according to a third embodiment of the present invention;
fig. 5 is a flowchart of a phase calibration method for a receiving channel according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a phase calibration apparatus for a receive channel according to a fifth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a phase calibration apparatus for a receive channel according to a sixth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a network device according to a seventh embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
The first embodiment of the present invention relates to a phase calibration method for a receiving channel, which is applied to a 5G millimeter wave phased array, as shown in fig. 1, and specifically includes:
Specifically, the 5G millimeter wave phased array is composed of a basic assembly and a plurality of radio frequency channels, wherein the basic assembly comprises a baseband and an optional intermediate frequency, and the inside of the basic assembly is composed of three parts: a CW single-frequency continuous wave generating section, a reception phase comparing section, a changeover switch for controlling three ports (a radiation antenna, a transmission channel, a reception channel); the enabling of the transmit and receive channels is controlled by the baseband of the base component. The radio frequency channels constitute an array, each radio frequency channel being composed of a radio frequency transmit channel (Tx RF), a radio frequency receive channel (Rx RF), a double pole double throw switching device (Switch), and a radiating Antenna (Antenna). By controlling the double-pole double-throw switching device (Switch), it can be realized that different radio frequency receiving channels (Rx RFs) receive single-frequency continuous wave signals (the single-frequency continuous wave signals are transmitted to the radio frequency receiving channels by the radiation antenna) sent by the same radio frequency transmitting channel (Tx RF), taking the 5G millimeter wave phased array shown in fig. 2 as an example, the method for receiving the single-frequency continuous wave signals of different radio frequency receiving channels by the same radio frequency receiving channel and recording the signal delay is as follows:
the basic component controls the Switch1 to connect the RF transmitting channel Tx RF1 and the RF receiving channel Rx RF 1; the basic component transmits a single-frequency continuous wave signal CW through a radio frequency transmission channel Tx RF 1; the single-frequency continuous wave signal CW is received by the radio frequency receiving channel Rx RF1, and the receiving Phase comparison portion Phase components of the base component records the signal delay of the single-frequency continuous wave signal;
the basic component controls a Switch1 which is communicated with a radiation Antenna1 and a radio frequency transmission channel Tx RF 1; the basic component controls a Switch2 to connect a radio frequency receiving channel Rx RF2 and a radiation Antenna 2; the basic component transmits a single-frequency continuous wave signal CW through a radio frequency transmission channel Tx RF 1; the single-frequency continuous wave signal CW passes through the radiation Antenna1 and is coupled and received by the radiation Antenna2 in the dark box; the single-frequency continuous wave signal CW received by the radiating Antenna2 is received by the radio frequency receiving channel Rx RF2 under the control of the Switch2, and the receiving Phase comparison portion Phase components of the basic module records the time delay of the signal at this moment, and so on until all the radio frequency receiving channels receive the single-frequency continuous wave signal transmitted from each radio frequency transmitting channel Tx RF 1.
In addition, it should be noted that, when the signal of the current rf receiving channel is acquired, the signal delay of the previous rf receiving channel is used as a reference.
And 102, acquiring the phase difference of the adjacent receiving channels according to the signal time delay of the adjacent receiving channels.
Specifically, after each radio frequency receiving channel receives a single-frequency continuous wave signal sent by the same radio frequency transmitting channel Tx RF1 and records the signal delay of each single-frequency continuous wave signal reaching the moment, the signal phase difference between adjacent transmitting channels is obtained, the signal phase difference subtracts a path delay of a certain multiple to obtain the phase difference of the adjacent transmitting channels, and the step is repeated until the phase differences between all adjacent transmitting channels are obtained, wherein the multiple of the path delay can be determined according to the actual situation.
Taking the signal delay of the radio frequency receiving channel 1 as a, the signal delay of the radio frequency receiving channel 2 as B, the path delay as T and the path delay multiple as 2 as an example: the phase difference of the adjacent receive channels 12 is the signal delay a-signal delay B-2 path delay T.
And 103, acquiring the phase relation of the adjacent receiving channels according to the phase difference.
Specifically, after the phase difference between adjacent receiving channels is obtained, since the single-frequency continuous wave signals sent by the same radio frequency transmitting channel are received by using different radio frequency receiving channels, it can be known from step 101 that: after the single-frequency continuous wave signal CW passes through the radiation Antenna2 and is coupled and received by the radiation Antenna1 in the dark box, the phase relationship of adjacent receiving channels also needs to consider the coupling phase difference, and the coupling phase difference is related to the path layout of the 5G millimeter wave phased array.
And 104, performing phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and the preset ideal time delay.
Specifically, after the phase relationship of each adjacent receiving channel is obtained, phase calibration can be sequentially performed on each receiving channel according to the phase relationship, the single-frequency continuous wave signal and a preset ideal time delay, wherein the preset ideal time delay refers to the signal time delay required by the normal arrival of the single-frequency continuous wave in the 5G millimeter wave phased array without considering influence factors such as temperature and device performance difference.
Compared with the prior art, in the phase calibration of each receiving channel of the 5G millimeter wave phased array, at least two receiving channels receive single-frequency continuous wave signals; recording the signal time delay of the single-frequency continuous wave signal of the receiving channel; acquiring the phase difference of adjacent receiving channels according to the signal time delay of the adjacent receiving channels; and acquiring the phase relation of adjacent receiving channels according to the phase difference, and performing phase calibration on the receiving channels according to the phase relation, the single-frequency continuous wave signals and the preset ideal time delay. By realizing the self-sending and self-receiving of the single-frequency continuous wave signals and calibrating the phase according to the corresponding phase relation, the 5G millimeter wave phased array can carry out self-checking inside without using an external device for phase calibration, and the problems of long phase calibration time and low accuracy of phase calibration results caused by the fact that the phase calibration between receiving channels of the antenna phased array needs to be carried out by using the external device in the prior art are solved.
A second embodiment of the present invention relates to a method for calibrating a phase of a receiving channel, which is substantially the same as the method for calibrating a phase of a receiving channel provided in the first embodiment of the present invention, except that, as shown in fig. 3, the method specifically includes:
Specifically, a transmission path of the single-frequency continuous wave signal can be controlled by a double-pole double-throw switching device (Switch) in the basic component of the 5G millimeter wave phased array, so that the single-frequency continuous wave signal from the same radio frequency transmitting channel can be received in each radio frequency receiving channel, and the signal time delay of the single-frequency continuous wave signal is recorded.
Specifically, this step is substantially the same as step 102 in the first embodiment, and is not repeated here.
And step 203, acquiring the phase relation of the adjacent receiving channels according to the phase difference.
Specifically, this step is substantially the same as step 103 in the first embodiment, and is not described herein again.
And 204, performing phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and the preset ideal time delay.
Specifically, this step is substantially the same as step 104 in the first embodiment, and is not repeated here.
Compared with the prior art, the embodiment of the invention can control the connection relation between the receiving channels and the receiving channels by switching the switch on the basis of realizing the beneficial effects brought by the first embodiment, so that one receiving channel can be sampled to receive single-frequency continuous wave signals sent by different receiving channels, the problem of inconsistency of the receiving channels relative to the receiving channels is avoided, the time delay of the signals acquired by the invention is more accurate, and the accuracy of phase calibration is improved.
A third embodiment of the present invention relates to a method for calibrating a phase of a receive channel, which is substantially the same as the method for calibrating a phase of a receive channel provided in the first embodiment of the present invention, except that, as shown in fig. 4, the method specifically includes:
Specifically, this step is substantially the same as step 101 in the first embodiment, and is not repeated here.
Specifically, the radio frequency receiving channels receive the single-frequency continuous wave signals sent by each radio frequency receiving channel, and after the signal time delay of each single-frequency continuous wave signal reaching time is recorded, the difference value between the signal time delays of adjacent receiving channels is used as the signal phase difference of the adjacent receiving channels.
And step 303, acquiring a phase difference of adjacent receiving channels according to the signal phase difference and the preset path delay.
Specifically, the phase difference of the adjacent transmitting channels can be obtained by subtracting a path delay of a certain multiple from the signal phase difference of the adjacent transmitting channels, and the step is repeated until the phase difference between all the adjacent transmitting channels is obtained, wherein the multiple of the path delay can be determined according to the actual situation.
And step 304, acquiring the phase relation of the adjacent receiving channels according to the phase difference.
Specifically, this step is substantially the same as step 103 in the first embodiment, and is not described herein again.
And 305, performing phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and the preset ideal time delay.
Specifically, this step is substantially the same as step 104 in the first embodiment, and is not repeated here.
Compared with the prior art, the implementation mode of the invention can take the path delay into consideration when obtaining the phase difference of the adjacent receiving channels on the basis of realizing the beneficial effects brought by the first implementation mode, and avoids the influence of the path delay of the 5G phased array on the phase difference of the adjacent receiving channels, so that the obtained phase difference of the adjacent receiving channels is closer to the actual use condition, and the accuracy of phase calibration among the receiving channels is improved.
A fourth embodiment of the present invention relates to a method for calibrating a phase of a receive channel, which is substantially the same as the method for calibrating a phase of a receive channel provided in the first embodiment, except that, as shown in fig. 5, the method specifically includes:
Specifically, this step is substantially the same as step 101 in the first embodiment, and is not repeated here.
And 402, acquiring the phase difference of the adjacent receiving channels according to the signal time delay of the adjacent receiving channels.
Specifically, this step is substantially the same as step 102 in the first embodiment, and is not repeated here.
And step 403, acquiring the path layout of the 5G millimeter wave phased array.
Specifically, the path layout of the 5G millimeter wave phased array refers to a relative position relationship between each part and each part, the position relationship affects signal delay during transmission of a single-frequency continuous wave signal, the path layout may be embodied in a simple drawing manner, or may be presented in a circuit diagram (as shown in fig. 2) or other forms, and only the position of each part needs to be understood.
And step 404, acquiring the coupling phase difference of the 5G millimeter wave phased array according to the path layout.
Specifically, after the path layout of the 5G millimeter wave phased array is known, the coupling phase difference of the current 5G millimeter wave phased array can be obtained according to the relative position of each part exhibited by the path layout.
Specifically, after the coupling phase difference is obtained, the sum of the phase difference of adjacent receiving channels and the coupling phase difference is used as the phase relationship of the adjacent channels, and the step is repeated until the phase relationship of each adjacent receiving channel is obtained, and after the phase relationship of each adjacent receiving channel is obtained, the phase relationship of each adjacent receiving channel needs to be normalized, so that the phase relationship of each adjacent receiving channel is relative to the same position.
And 406, performing phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and the preset ideal time delay.
Specifically, this step is substantially the same as step 104 in the first embodiment, and is not repeated here.
Compared with the prior art, the method and the device for acquiring the phase relationship between the adjacent receiving channels have the advantages that on the basis of achieving the beneficial effects brought by the first embodiment, the coupling phase difference between the receiving channels can be considered when the phase relationship between the adjacent receiving channels is acquired, the influence of the coupling phase difference between the receiving channels of the 5G phased array on the phase relationship between the adjacent receiving channels is avoided, the acquired phase relationship between each adjacent channel is relative to a specific reference position, the phase calibration error caused by different reference positions of the phase relationship between the adjacent receiving channels is avoided, the acquired phase relationship between the adjacent receiving channels is closer to the actual use condition, and the accuracy of the phase calibration between the receiving channels is improved.
In addition, it should be understood that the above steps of the various methods are divided for clarity, and the implementation may be combined into one step or split into some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included in the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A fifth embodiment of the present invention relates to a phase calibration device for a reception channel, as shown in fig. 6, including:
a transmitting channel module 501, configured to send a single-frequency continuous wave signal to at least two receiving channel modules;
a receiving channel module 502, configured to receive a single-frequency continuous wave signal;
the phase comparison module 503 is configured to obtain a signal delay of the single-frequency continuous wave signal of the adjacent receiving channel, and obtain a phase difference of the adjacent receiving channel according to the signal delay;
an obtaining module 504, configured to obtain a phase relationship between adjacent receiving channels according to the phase difference;
and the calibration module 505 is configured to perform phase calibration on the receiving channel according to the phase relationship, the single-frequency continuous wave signal, and the preset ideal time delay.
A sixth embodiment of the present invention relates to a phase calibration apparatus for a receive channel, which is substantially the same as the phase calibration apparatus for a receive channel provided in the first embodiment, except that, as shown in fig. 7, the apparatus specifically includes:
a single-frequency continuous wave generating module 601, configured to generate a single-frequency continuous wave signal;
the switch module 602 is configured to control a connection relationship between the receiving channels, so that at least two receiving channels receive the single-frequency continuous wave signal.
A transmitting channel module 603, configured to send a single-frequency continuous wave signal to at least two receiving channel modules;
a receiving channel module 604, configured to receive a single-frequency continuous wave signal;
the phase comparison module 605 is configured to obtain a signal delay of a single-frequency continuous wave signal of an adjacent receiving channel, and obtain a phase difference of the adjacent receiving channel according to the signal delay;
an obtaining module 606, configured to obtain a phase relationship between adjacent receiving channels according to the phase difference;
the calibration module 607 is configured to perform phase calibration on the receiving channel according to the phase relationship, the single-frequency continuous wave signal, and the preset ideal time delay.
In addition, it should be noted that the phase calibration device for the receiving channel mentioned in the fifth embodiment and the sixth embodiment needs to be placed in a shielding box for use, and the phase calibration device for the receiving channel needs to be used in a non-operating state of the 5G millimeter wave phased array, so as to avoid the phenomenon that the phase calibration result of the receiving channel is inaccurate due to the fact that signal transmission operation is also needed for carrying out some other unnecessary influence factors on the phase calibration of the receiving channel in normal operation.
It should be noted that each of the modules in the fifth embodiment and the sixth embodiment is a logic module, and in practical application, one logic unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of a plurality of physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A seventh embodiment of the present invention relates to a network device, as shown in fig. 8, including:
at least one processor 701; and the number of the first and second groups,
a memory 702 communicatively coupled to the at least one processor 701; wherein the content of the first and second substances,
the memory 702 stores instructions executable by the at least one processor 701 to enable the at least one processor 701 to perform a method for phase calibration of a receive channel according to any of the above aspects of the invention.
Where the memory and processor are connected by a bus, the bus may comprise any number of interconnected buses and bridges, the buses connecting together one or more of the various circuits of the processor and the memory. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other systems over a transmission medium. The data processed by the processor is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor.
The processor is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory may be used to store data used by the processor in performing operations.
Claims (10)
1. A phase calibration method of a receiving channel is applied to a 5G millimeter wave phased array and comprises the following steps:
at least two receiving channels receive a single-frequency continuous wave signal and record the signal time delay of the single-frequency continuous wave signal of the receiving channels;
acquiring the phase difference of the adjacent receiving channels according to the signal time delay of the adjacent receiving channels;
acquiring the phase relation of the adjacent receiving channels according to the phase difference;
and carrying out phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and a preset ideal time delay.
2. The method of claim 1, wherein the at least two receive channels receive a single frequency continuous wave signal, comprising:
and controlling the connection relation between the transmitting channel and the receiving channels by switching a switch so that at least two receiving channels receive the single-frequency continuous wave signals.
3. The method of claim 1, wherein the obtaining the phase difference of the adjacent receiving channels according to the signal delay of the adjacent receiving channels comprises:
acquiring the signal phase difference of the adjacent receiving channels;
and acquiring the phase difference of the adjacent receiving channels according to the signal phase difference and the preset path time delay.
4. The method according to claim 1, wherein the obtaining the phase relationship between the adjacent receiving channels according to the phase difference comprises:
acquiring the path layout of the 5G millimeter wave phased array;
acquiring the coupling phase difference of the 5G millimeter wave phased array according to the path layout;
and acquiring the phase relation of the adjacent receiving channels according to the coupling phase difference and the phase difference.
5. The method according to claim 1, further comprising normalizing the phase relationship after obtaining the phase relationship between the adjacent receiving channels according to the phase difference.
6. A phase calibration apparatus for a receive channel, comprising:
the receiving channel module is used for receiving the single-frequency continuous wave signal;
the transmitting channel module is used for transmitting single-frequency continuous wave signals to the at least two receiving channel modules;
the phase comparison module is used for acquiring the signal time delay of the single-frequency continuous wave signals of the adjacent receiving channels and acquiring the phase difference of the adjacent receiving channels according to the signal time delay;
the acquisition module is used for acquiring the phase relation of the adjacent receiving channels according to the phase difference;
and the calibration module is used for carrying out phase calibration on the receiving channel according to the phase relation, the single-frequency continuous wave signal and the preset ideal time delay.
7. The phase calibration device for the receiving channel according to claim 6, wherein the phase calibration device for the receiving channel is placed in a shielding box.
8. The phase calibration apparatus for a receive channel according to claim 6, further comprising:
the single-frequency continuous wave generating module is used for generating the single-frequency continuous wave signal;
and the switch module is used for controlling the connection relation between the receiving channels so that at least two receiving channel modules receive the single-frequency continuous wave signals.
9. The phase calibration apparatus of claim 6, wherein the processing module is further configured to:
acquiring the path layout of the 5G millimeter wave phased array;
acquiring the coupling phase difference of the 5G millimeter wave phased array according to the path layout;
and acquiring the phase relation of the adjacent receiving channels according to the coupling phase difference and the phase difference.
10. A network device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions for execution by the at least one processor to enable the at least one processor to perform the method of phase calibration of a receive channel of any of claims 1 to 5.
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| CN202011454800.2A CN112615687A (en) | 2020-12-10 | 2020-12-10 | Phase calibration method and device of receiving channel and network equipment |
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| CN202011454800.2A Pending CN112615687A (en) | 2020-12-10 | 2020-12-10 | Phase calibration method and device of receiving channel and network equipment |
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