CN110768733B - Method and device for testing large-scale array antenna of integrated filter - Google Patents
Method and device for testing large-scale array antenna of integrated filter Download PDFInfo
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- CN110768733B CN110768733B CN201911175549.3A CN201911175549A CN110768733B CN 110768733 B CN110768733 B CN 110768733B CN 201911175549 A CN201911175549 A CN 201911175549A CN 110768733 B CN110768733 B CN 110768733B
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Abstract
The embodiment of the invention provides a method and a device for testing a large-scale array antenna of an integrated filter, wherein the method comprises the following steps: respectively testing the scattering parameters of each channel before and after welding the signal connecting part; for any channel, subtracting the two test results of the scattering parameters of the channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated; the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel. The embodiment of the invention fully utilizes the existing conditions, has simple and convenient processing scheme and good consistency, does not need to additionally increase components, and only changes the sequence of the production test flow. By using an indirect processing algorithm, the difference caused by the inconsistency between the filters is well solved by two tests, the amplitude and phase consistency data of the pure antenna without the filters is obtained, and the test and the judgment of the filter indexes and the single antenna indexes are realized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for testing a large-scale array antenna of an integrated filter.
Background
The 5G large-scale antenna is a key component of a 5G system, and an antenna radiation directional pattern with a specific direction can be obtained by adjusting the amplitude and the phase of each subunit antenna, so that the beam direction can be controlled, the coverage area is enhanced, and the interference is reduced.
In order to realize the beam forming capability, the excitation of the amplitude and the phase corresponding to the subunit antenna needs a basic function of the 5G antenna in hardware, namely, the calibration function of the amplitude and the phase in the transmission function of scattering parameters between channels. The realization principle of the calibration function is mainly that corresponding couplers and power divider modules are arranged in the channels of the antenna, so that signals among the channels are extracted and detected, amplitude phase errors in transmission functions of scattering parameters among the channels of the antenna are calibrated, and a foundation is provided for accurate beam forming. As such, the index of amplitude phase consistency in the transmission function of the scattering parameters of the 5G antenna is one of the key indexes for evaluating the electrical performance index of the 5G large-scale antenna, and is an important basic index of the whole active antenna system (AAU).
In order to suppress the out-of-band spurious signals, a filter module is usually added to each channel in the whole system, and the filter module in the conventional AAU antenna system is integrated on the power amplifier side of the main device. At present, in order to improve the integration degree of a system, a large-size filter is placed on the side of an antenna with space recycling, so that the miniaturization of whole equipment is realized, and meanwhile, the debugging difficulty of a system side product can also be reduced.
The 5G large-scale antenna with the integrated filter comprises a group of filters in each channel, and the consistency of the batch electrical performance is difficult to guarantee due to the process consistency and the individual debugging difference among the filters in each group. Further, the indexes of the amplitude and phase consistency between channels of the 5G large-scale antenna become poor, and further, it becomes very difficult to obtain the indexes of the amplitude and phase consistency in the transmission function between pure channels except for the filter. When the antenna is assembled into a complete machine antenna, one port of the filter is connected to a signal input port, but the other port is connected to an antenna unit of an open radiation structure, and in this state, the independent test of the filter index integrated on the antenna is difficult.
Disclosure of Invention
Embodiments of the present invention provide a method and apparatus for testing a large-scale array antenna of an integrated filter that overcomes or at least partially solves the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a method for testing a large-scale array antenna of an integrated filter, including:
respectively testing the scattering parameters of each channel before and after welding the signal connecting part;
for any channel, subtracting the two test results of the scattering parameters of the channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated;
the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel.
Preferably, the scattering parameter after the filter characteristic is eliminated is used as a standard parameter, the standard parameter with the maximum amplitude and the standard parameter with the minimum amplitude are obtained from the standard parameters of all channels, and the difference value between the maximum amplitude and the minimum amplitude is used as a test result of amplitude consistency.
Preferably, the standard parameter having the maximum phase and the standard parameter having the minimum phase are obtained from the standard parameters of all channels, and the difference between the maximum phase and the minimum phase is used as a test result of phase consistency.
In a second aspect, an embodiment of the present invention provides a device for testing a large-scale array antenna of an integrated filter, including:
the test module is used for testing the scattering parameters of each channel respectively before and after welding the signal connecting part;
the calculation module is used for subtracting the two test results of the scattering parameters of any channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated;
the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel.
Preferably, the test device further comprises: and the amplitude consistency testing module is used for taking the scattering parameters after the filter characteristics are eliminated as standard parameters, obtaining the standard parameters with the maximum amplitude and the standard parameters with the minimum amplitude from the standard parameters of all channels, and taking the difference value of the maximum amplitude and the minimum amplitude as a testing result of the amplitude consistency.
Preferably, the test device further comprises: and the phase consistency testing module is used for obtaining the standard parameter with the maximum phase and the standard parameter with the minimum phase from the standard parameters of all the channels, and taking the difference value of the maximum phase and the minimum phase as a phase consistency testing result.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method provided in the first aspect when executing the program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method as provided in the first aspect.
The method and the device for testing the large-scale array antenna of the integrated filter provided by the embodiment of the invention fully utilize the existing conditions, have simple and convenient processing scheme and good consistency, do not need to additionally increase components, only change the sequence of the production testing process, and utilize the interval processing algorithm to carry out two tests so as to well solve the difference caused by the inconsistency of the filter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art 5G antenna;
FIG. 2 is a schematic diagram of a large-scale array antenna with integrated filters according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for testing a large-scale array antenna of an integrated filter according to an embodiment of the present invention;
FIG. 4 is a graphical illustration of the amplitude consistency of two scattering parameters tested prior to welding signal connections in accordance with an embodiment of the present invention;
FIG. 5 is a graphical illustration of the amplitude consistency of two scattering parameters tested after welding of a signal connection component in accordance with an embodiment of the present invention;
FIG. 6 is a diagram illustrating the amplitude consistency of two scattering parameters after the filter characteristics are removed according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a device for testing a large-scale array antenna of an integrated filter according to an embodiment of the present invention;
fig. 8 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a 5G antenna in the prior art, as shown in fig. 1, a 64-channel antenna is provided, and the difference between the amplitude and the phase consistency can be obtained by testing the amplitude and the phase in the transmission function of the scattering parameter of the 64 channels; specifically, through the ports of all the antennas, if the amplitude of the m channel is the maximum amplitude and the amplitude of the n channel is the minimum amplitude, the test result of amplitude consistency can be obtained by subtracting the two amplitude values, and similarly, if the phase of the p channel is the maximum phase and the phase of the q channel is the minimum phase, the two phases are subtracted, so that the test result of phase consistency can be obtained.
Fig. 2 is a schematic diagram of a large-scale array antenna with integrated filters according to an embodiment of the present invention, as can be seen from a comparison between fig. 1 and fig. 2, the large-scale array antenna shown in fig. 2 is added with a signal connection part and a filter module, the signal connection part is used for connecting an antenna unit and a coupler module, and it is difficult to ensure consistency of batch electrical performance (amplitude, phase and port reflection coefficient of a transfer function) between each group of filters due to process consistency and individual debugging differences.
Fig. 3 is a schematic flowchart of a method for testing a large-scale array antenna of an integrated filter according to an embodiment of the present invention, as shown in fig. 3, the method includes:
s101, respectively testing scattering parameters of each channel before and after welding a signal connecting part;
fig. 4 is a schematic diagram illustrating the amplitude consistency of two scattering parameters tested before the signal connecting part is welded according to the embodiment of the present invention, and it can be found from fig. 4 that the amplitude consistency between two sets of scattering parameters (referred to as series 1 and series 2) is very poor and has large fluctuation, and the phase consistency between two sets of scattering parameters can also be found by testing the phase consistency.
Fig. 5 is a schematic diagram illustrating the amplitude consistency of two scattering parameters tested after the signal connection component is welded according to the embodiment of the present invention, and it can be found from fig. 5 that the amplitude consistency of the whole antenna becomes very poor and fluctuates greatly due to the difference between the filters in the two sets of scattering parameters (referred to as series 1 and series 2) tested after the signal connection component is welded, and the phase consistency between the two sets of scattering parameters can also be found by testing the phase consistency.
S102, subtracting the two test results of the scattering parameters of any channel to obtain the scattering parameters of the channel after the elimination of the filter characteristics.
Fig. 6 is a schematic diagram of the amplitude consistency of two scattering parameters after the filter characteristics are eliminated according to the embodiment of the present invention, and it is apparent from fig. 6 that the difference between the filters is eliminated, the amplitude consistency of the whole antenna becomes normal, the fluctuation of two sets of scattering parameters (referred to as series 1 and series 2) is small, and the phase consistency between the two sets of scattering parameters also becomes normal by testing the phase consistency. The test data of the specific embodiment shows that the test scheme solves the difference caused by the inconsistency among the filters, obtains the filter indexes integrated on the antenna and the data of the amplitude and phase consistency of the pure antenna without the filter, and realizes the test and judgment of the filter indexes and the amplitude and phase consistency indexes of the single antenna.
It should be noted that, since the two test results of the same channel both include the parameters of the same filter, the difference caused by the inconsistency of the filters can be eliminated by a simple subtraction operation. The method for testing the large-scale array antenna of the integrated filter utilizes the existing conditions, has simple and convenient processing scheme and good consistency, does not need to additionally increase components, and only changes the sequence of the production testing process. By using an indirect processing algorithm, the difference caused by the inconsistency between the filters is well solved by two tests, the amplitude and phase consistency data of the pure antenna without the filters is obtained, and the test and the judgment of the filter indexes and the single antenna indexes are realized.
On the basis of the above embodiments, as an optional embodiment, the testing method further includes: and taking the scattering parameters after the filter characteristics are eliminated as standard parameters, obtaining the standard parameters with the maximum amplitude and the standard parameters with the minimum amplitude from the standard parameters of all channels, and taking the difference value of the maximum amplitude and the minimum amplitude as the test result of amplitude consistency.
On the basis of the above embodiments, as an optional embodiment, the testing method further includes: and obtaining the standard parameter with the maximum phase and the standard parameter with the minimum phase from the standard parameters of all channels, and taking the difference value of the maximum phase and the minimum phase as a test result of phase consistency.
Fig. 7 is a schematic structural diagram of a testing apparatus for a large-scale array antenna of an integrated filter according to an embodiment of the present invention, as shown in fig. 7, the testing apparatus for a large-scale array antenna of an integrated filter includes: a test module 201 and a calculation module 202, wherein:
the test module 201 is used for testing the scattering parameters of each channel respectively before and after welding the signal connecting part;
the calculation module 202 is configured to subtract the two test results of the scattering parameter of any channel to obtain the scattering parameter of the channel after the filter characteristic is eliminated;
the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel.
Preferably, the apparatus further comprises: and the amplitude consistency testing module is used for taking the scattering parameters after the filter characteristics are eliminated as standard parameters, obtaining the standard parameters with the maximum amplitude and the standard parameters with the minimum amplitude from the standard parameters of all channels, and taking the difference value of the maximum amplitude and the minimum amplitude as a testing result of the amplitude consistency.
Preferably, the apparatus further comprises: and the phase consistency testing module is used for obtaining the standard parameter with the maximum phase and the standard parameter with the minimum phase from the standard parameters of all the channels, and taking the difference value of the maximum phase and the minimum phase as a phase consistency testing result.
The apparatus for testing a large-scale array antenna of an integrated filter provided in the embodiments of the present invention specifically executes the process of the embodiment of the method for testing a large-scale array antenna of each integrated filter, and please refer to the contents of the embodiment of the method for testing a large-scale array antenna of each integrated filter in detail, which are not described herein again. The testing device of the large-scale array antenna of the integrated filter provided by the embodiment of the invention fully utilizes the existing conditions, has simple and convenient processing scheme and good consistency, does not need to additionally increase components, and only changes the sequence of the production testing process. By using an indirect processing algorithm, the difference caused by the inconsistency between the filters is well solved by two tests, the amplitude and phase consistency data of the pure antenna without the filters is obtained, and the test and the judgment of the filter indexes and the single antenna indexes are realized.
Fig. 8 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 8, the electronic device may include: a processor (processor)310, a communication Interface (communication Interface)320, a memory (memory)330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may invoke a computer program stored on the memory 330 and executable on the processor 310 to perform the method for testing a large-scale array antenna of integrated filters provided by the above embodiments, for example, including: respectively testing the scattering parameters of each channel before and after welding the signal connecting part; for any channel, subtracting the two test results of the scattering parameters of the channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated; the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for testing a large-scale array antenna of an integrated filter, which is provided in the foregoing embodiments, and includes: respectively testing the scattering parameters of each channel before and after welding the signal connecting part; for any channel, subtracting the two test results of the scattering parameters of the channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated; the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A method for testing a large-scale array antenna of an integrated filter is characterized by comprising the following steps:
respectively testing the scattering parameters of each channel before and after welding the signal connecting part;
for any channel, subtracting the two test results of the scattering parameters of the channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated;
the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel; the two test results of each channel comprise parameters of the same filter;
taking the scattering parameters after the filter characteristics are eliminated as standard parameters, obtaining the standard parameters with the maximum amplitude and the standard parameters with the minimum amplitude from the standard parameters of all channels, and taking the difference value of the maximum amplitude and the minimum amplitude as a test result of amplitude consistency;
and obtaining the standard parameter with the maximum phase and the standard parameter with the minimum phase from the standard parameters of all channels, and taking the difference value of the maximum phase and the minimum phase as a test result of phase consistency.
2. An apparatus for testing a large-scale array antenna of an integrated filter, comprising:
the test module is used for testing the scattering parameters of each channel respectively before and after welding the signal connecting part;
the calculation module is used for subtracting the two test results of the scattering parameters of any channel to obtain the scattering parameters of the channel after the filter characteristics are eliminated;
the signal connecting part of each channel is used for the antenna unit and the coupler module of the channel; the two test results of each channel comprise parameters of the same filter;
the amplitude consistency testing module is used for taking the scattering parameters after the filter characteristics are eliminated as standard parameters, obtaining the standard parameters with the maximum amplitude and the standard parameters with the minimum amplitude from the standard parameters of all channels, and taking the difference value of the maximum amplitude and the minimum amplitude as a testing result of the amplitude consistency;
and the phase consistency testing module is used for obtaining the standard parameter with the maximum phase and the standard parameter with the minimum phase from the standard parameters of all the channels, and taking the difference value of the maximum phase and the minimum phase as a phase consistency testing result.
3. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method of testing a large scale array antenna of an integrated filter according to claim 1.
4. A non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method for testing a large-scale array antenna of an integrated filter according to claim 1.
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| CN111541496B (en) * | 2020-04-22 | 2022-06-17 | 航天恒星科技有限公司 | Method and device for testing amplitude inconsistency indexes among satellite-borne phased-array antenna channels |
| CN114720781B (en) * | 2022-04-06 | 2023-03-28 | 深圳市利和兴股份有限公司 | Antenna consistency testing platform system convenient to maintain |
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Effective date of registration: 20221201 Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: Wuhan Hongxin Technology Development Co.,Ltd. |