CN117849594B - Quick gain test and compensation calculation method for microwave channel module and test platform thereof - Google Patents
Quick gain test and compensation calculation method for microwave channel module and test platform thereof Download PDFInfo
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Abstract
The invention discloses a rapid gain testing and compensation calculating method and a testing platform thereof for a microwave channel module, which are used for improving the working efficiency and greatly reducing the labor cost. The method comprises the steps of initializing and calibrating by an upper computer, and accessing a measured piece to measure the gain of the whole channel; measuring the gain of the calibration fixture by using a half-open cable, and sequentially measuring the gain of each position of the uplink of the measured piece channel by using the half-open cable; the upper computer reads the gains of all positions of the tested link of the tested piece. The gain calculation is compared with the scheme to determine whether the gain amount at the position is proper or not, and the adjusted parameter value is given. The channel link gains are tested in turn. The position and parameters to be adjusted can be calculated. The channel module rapid gain test and compensation calculation of the invention realizes automatic test and parameter value adjustment, greatly improves test efficiency, reduces labor cost and improves parameter accuracy.
Description
Technical Field
The invention belongs to the technical field of microwave channel gain testing, and particularly relates to a rapid gain testing and compensation calculating method and a testing platform thereof for a microwave channel module.
Background
The microwave channel module is used for transmitting, amplifying, attenuating and isolating signals of an electronic system, and is a core component of the electronic system in modern electronic technology and widely applied to the fields of radar, communication, measurement and control, countermeasure, navigation and the like. With the development of modern electronic technology, the performance of electronic equipment is continuously improved, the functions are continuously increased, and simultaneously, higher requirements are also put on the performances of all aspects of the microwave channel module. The indexes of the microwave channel module mainly comprise: miniaturization, high gain, gain flatness, low standing wave, low noise figure, etc. The main indexes of the microwave channel module are basically related to the gain.
The existing gain test and calibration of gain flatness lack of automatic test and calculation schemes, and manual test is low in efficiency, inconsistent in parameters and high in quality cost.
Disclosure of Invention
The invention aims to provide a rapid gain testing and compensation calculating method and a testing platform thereof for a microwave channel module, which mainly solve the technical problems of low working efficiency, low parameter accuracy, inadaptability to mass production and high production cost of the traditional manual testing and calculation of the microwave channel module.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a method for testing and compensating the fast gain of a microwave channel module comprises the following steps:
S1, an upper computer sets calibration parameters and initializes the parameters, and an initial gain value of a calculation scheme is imported;
s2, calibrating and normalizing the current use frequency of the test cable;
S3, calibrating and normalizing the current use frequency of the half-open cable;
s4, testing the calibration fixture by using the semi-open cable, and measuring the gain value of the calibration fixture;
S5, testing the tested microwave channel module by using a half-open cable, and measuring the gain of the whole link;
S6, performing gain test on a switch, an amplifier, an attenuator and an equalizer of the whole link of the detected microwave channel module; when each part of the link is tested, the upper computer starts to collect the gain value of each part;
S7, after each part of the link is tested, the upper computer compares the data, calculates the difference value between each part and the initial gain value in S1, displays the gain of each part of the link, and gives the gain value adjusted by each part of the link;
S8, finishing the gain test.
Further, in S2-S5, current data are collected through the upper computer after calibration or test is completed.
Based on the method, the invention also provides a rapid gain test workbench of the microwave channel module, which comprises a vector network, a computer connected with the vector network through a network cable and a calibration fixture connected with the vector network; the measured microwave channel module is connected with the vector network.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the difference value between the calibration fixture and the measured piece and the half-open cable gain is used for calculation, and the gains of all parts of the link are read through the upper computer. The gains of all the parts are compared with the design value of the scheme, and the value of the current gain of all the parts to be adjusted can be accurately known. The upper computer is used for calculating and giving out actual adjustment parameters, so that manual calculation and repeated trial and error are avoided, the testing efficiency is greatly improved, and the accuracy of the parameters is improved.
Drawings
FIG. 1 is a schematic diagram of a test structure according to the present invention.
FIG. 2 is a schematic flow chart of the method of the present invention.
Detailed Description
The invention will be further illustrated by the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1, in the test platform used in the embodiment, a computer is connected with a vector network by using a network cable, and the vector network compares the design gain of the scheme with the gain of the sample test and the gain of the tested piece; the sample and the tested piece are tested by using the radio frequency cable and the half-open cable respectively, and the tested piece is required to be tested for the gain of each position of the channel link. The measured gain is calculated with the design value on the computer, and the gain value to be scheduled is given.
As shown in fig. 2, based on the above-mentioned test platform, the method for testing the microwave channel module rapid gain and calculating compensation according to the present invention includes the following steps:
S1, an upper computer sets calibration parameters and initializes the parameters, and an initial gain value of a calculation scheme is imported;
s2, calibrating and normalizing the current use frequency of the test cable;
S3, calibrating and normalizing the current use frequency of the half-open cable;
s4, testing the calibration fixture by using the semi-open cable, and measuring the gain value of the calibration fixture;
S5, testing the tested microwave channel module by using a half-open cable, and measuring the gain of the whole link;
S6, performing gain test on a switch, an amplifier, an attenuator and an equalizer of the whole link of the detected microwave channel module; when each part of the link is tested, the upper computer starts to collect the gain value of each part;
S7, after each part of the link is tested, the upper computer compares the data, calculates the difference value between each part and the initial gain value in S1, displays the gain of each part of the link, and gives the gain value adjusted by each part of the link;
S8, finishing the gain test.
The invention provides a rapid gain test and compensation calculation method for a microwave channel module, which comprises the following steps: the upper computer sets calibration parameters and initializes the calibration parameters; then, calibrating and normalizing the test cable and the half-open cable; testing the calibration fixture by using a half-open cable and a test cable, and storing the current gain; the whole link and each part of the link of the tested piece are tested by using the half-open cable and the test cable again; the results of the test are compared with the design values of the protocol. The method for testing the gain of the full microwave channel module and calculating the compensation of the full microwave channel module effectively realizes automatic testing, improves the working efficiency and greatly reduces the labor cost.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or color changes made in the main design concept and spirit of the present invention are still consistent with the present invention, and all the technical problems to be solved are included in the scope of the present invention.
Claims (3)
1. The rapid gain test and compensation calculation method for the microwave channel module is characterized by comprising the following steps of:
S1, an upper computer sets calibration parameters and initializes the parameters, and an initial gain value of a calculation scheme is imported;
s2, calibrating and normalizing the current use frequency of the test cable;
S3, calibrating and normalizing the current use frequency of the half-open cable;
S4, testing the calibration fixture by using a vector network, a test cable and a semi-open cable, and measuring the gain value of the calibration fixture;
s5, testing the tested microwave channel module by using a vector network, a test cable and a half-open cable, and measuring the gain of the whole link;
S6, performing gain test on a switch, an amplifier, an attenuator and an equalizer of the whole link of the tested microwave channel module by using a vector network, a test cable and a half-open cable; when each part of the link is tested, the upper computer starts to collect the gain value of each part;
S7, after each part of the link is tested, the upper computer compares the data, calculates the difference value between each part and the initial gain value in S1, displays the gain of each part of the link, and gives the gain value adjusted by each part of the link;
S8, finishing the gain test.
2. The method for rapid gain testing and compensation calculation of a microwave channel module according to claim 1, wherein in S2-S5, current data are collected by an upper computer after calibration or testing is completed.
3. The rapid gain test workbench for the microwave channel module is characterized by realizing the rapid gain test and compensation calculation method for the microwave channel module, which is disclosed in claim 1, and comprises a vector network, an upper computer connected with the vector network through a network cable, and a calibration fixture connected with the vector network through a test cable and a half-open cable; the tested microwave channel module is connected with the vector network through a test cable and a half-opening cable; one end of the test cable is connected with the vector network, the other end of the test cable is connected with one end of the half-open cable, and the other end of the half-open cable is connected with the calibration clamp or the tested microwave channel module; the upper computer is a computer.
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| CN113242076A (en) * | 2021-06-15 | 2021-08-10 | 展讯通信（上海）有限公司 | Target link gain control method and device, storage medium and relay equipment |
| CN115473503A (en) * | 2022-05-23 | 2022-12-13 | 合肥本源量子计算科技有限责任公司 | Method, device, medium and electronic equipment for representing gain of signal amplifier |
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| US7327294B2 (en) * | 2003-04-24 | 2008-02-05 | Nxp B.V. | Gain compensation based on a first gain factor and a second gain factor with time-varying compensation |
| CN1298178C (en) * | 2003-09-28 | 2007-01-31 | 中兴通讯股份有限公司 | Multi-carrier auto-gain calibrating device and method |
| TWI233270B (en) * | 2004-01-19 | 2005-05-21 | Airoha Tech Corp | Gain imbalance calibration circuit and a method of a receiver |
| US7831220B2 (en) * | 2005-07-26 | 2010-11-09 | Broadcom Corporation | Methods and systems for calibrating for gain and phase imbalance and local oscillator feed-through |
| CN102932301B (en) * | 2011-08-09 | 2015-09-02 | 中国科学院微电子研究所 | A kind of automatic gain control equipment and method realizing Fast Convergent |
| CN103713272A (en) * | 2013-12-18 | 2014-04-09 | 上海斐讯数据通信技术有限公司 | Offset test method |
| CN107005946B (en) * | 2015-05-08 | 2020-03-24 | 京信通信系统（中国）有限公司 | Active DAS system relay terminal gain control method and device and relay terminal machine |
| WO2018208830A1 (en) * | 2017-05-08 | 2018-11-15 | Wilson Electronics, Llc | Signal booster system with automatic gain control |
| CN110391834B (en) * | 2019-07-22 | 2021-10-29 | 展讯通信（上海）有限公司 | Gain adjustment method, device, relay device and storage medium |
| CN111082832A (en) * | 2019-12-31 | 2020-04-28 | 京信通信系统（中国）有限公司 | Link gain control device and TDD equipment |
| CN117395762A (en) * | 2023-11-21 | 2024-01-12 | 上海剑桥科技股份有限公司 | Uplink gain adjustment method, device, equipment and medium |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895493A (en) * | 2010-07-19 | 2010-11-24 | 京信通信系统（中国）有限公司 | Multi-antenna communication system and gain control method thereof |
| CN113242076A (en) * | 2021-06-15 | 2021-08-10 | 展讯通信（上海）有限公司 | Target link gain control method and device, storage medium and relay equipment |
| CN115473503A (en) * | 2022-05-23 | 2022-12-13 | 合肥本源量子计算科技有限责任公司 | Method, device, medium and electronic equipment for representing gain of signal amplifier |
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