Wireless module calibration parameter extraction method and device

A technology for calibrating parameters and extraction methods, which is applied in advanced technology, receiver monitoring, climate sustainability, etc., can solve the problems that modules cannot be quickly screened out, RF performance has a great impact, and user experience is affected, so as to improve production Yield rate and test efficiency, improve product performance consistency, shorten the effect of RF calibration time

Active Publication Date: 2022-08-09
CHENGDU VANTRON TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The wireless module has not been strictly calibrated before leaving the factory, which will lead to poor RF performance consistency and affect user experience; or the temperature compensation calibration has not been performed, resulting in temperature changes within the industrial temperature range of -40°C~+85°C that have a great impact on RF performance ; Bad modules cannot be quickly screened out accurately during mass production
In addition, for a multi-channel CBRS module, since it has multiple channels and multiple modulation modes, and each modulation mode has multiple channels of high, medium and low, respectively, RF calibration is performed on the corresponding modes of each channel, and then the module performance test is performed. It leads to the problems of low pass-through rate, low test efficiency and long time-consuming of the module, which is not suitable for mass production

Method used

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  • Wireless module calibration parameter extraction method and device
  • Wireless module calibration parameter extraction method and device
  • Wireless module calibration parameter extraction method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A wireless module calibration parameter extraction method, such as figure 1 As shown, a method for extracting calibration parameters of a wireless module includes the following steps:

[0041] S1: Sampling wireless modules, extracting calibration parameters of the batch of wireless modules, testing the sampled wireless modules, and obtaining the preset judgment standard values ​​of the batch of wireless modules with reference to the test indicators;

[0042] S2: write the acquired calibration parameters into the radio frequency calibration parameter storage area corresponding to the wireless module to be tested;

[0043] S3: Test the wireless module to be tested by a comprehensive tester and a PC terminal, and screen out bad wireless modules, qualified wireless modules, and wireless module modules that need to be calibrated according to the judgment standard value;

[0044] S4: For the wireless module to be calibrated, the PC terminal reads the radio frequency calibrat...

Embodiment 2

[0061] This embodiment is a specific embodiment of Embodiment 1, including:

[0062] S1: Sample CBRS wireless modules, extract the calibration parameters of the batch of modules, test the sampled CBRS wireless modules, and obtain the preset judgment standard values ​​of the batch of modules with reference to FCC Part 96.47 and CBRS CBRD test indicators;

[0063] S2: write the acquired calibration parameters into the radio frequency calibration parameter storage area corresponding to the CBRS wireless module to be tested;

[0064] S3: Test the CBRS wireless module to be tested by the comprehensive tester and the PC terminal, and screen out the bad CBRS wireless module, the qualified CBRS wireless module, and the CBRS wireless module that needs to be calibrated according to the judgment standard value. Group;

[0065] S4: For the CBRS wireless module to be calibrated, the software reads the RF calibration parameters in the corresponding storage area to perform automatic compens...

Embodiment 3

[0068] This embodiment is a specific embodiment of Embodiment 1, including:

[0069] Transmit power calibration: load the initialization file without transmit power temperature compensation; run the initialization through the PC in the specified 8 temperature ranges (-40, -25, -10, 5, 25, 45, 65, 85) respectively file; generates temperature compensation factors.

[0070] At room temperature of 25°C, the transmit power of the power amplifier is 23dBm, and at 45°C, the power detector detects a power value of 22.2dBm. At 45°C, the power detector needs to perform a power compensation of 0.8dBm.

[0071] Further, it is set that the power amplifier has three gain level modes of high, medium and low, and it is only necessary to fine-tune and calibrate the power compensation value at each temperature end in the high gain mode, and perform the same offset compensation in the medium and low gain mode.

[0072] Receive channel low noise amplifier (LNA) calibration: load the initializati...

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Abstract

The invention discloses a wireless module calibration parameter extraction method and device, and belongs to the technical field of wireless module calibration, and the method comprises the steps: sampling wireless modules, extracting calibration parameters of the batch of wireless modules, testing the sampled wireless modules, and obtaining preset judgment standard values of the batch of wireless modules by referring to test indexes; writing the obtained calibration parameters into a radio frequency calibration parameter storage area corresponding to the wireless module to be tested; testing the to-be-tested wireless module through a comprehensive tester and a PC terminal, and screening out bad, qualified and to-be-calibrated wireless modules according to the judgment standard value; according to the wireless module radio frequency calibration method and device, automatic compensation is carried out on the wireless module needing to be calibrated, bad modules can be accurately screened out, accurate extraction of calibration parameters is achieved, the radio frequency calibration time of the wireless module is greatly shortened, and the product performance consistency, the large-scale production yield and the production efficiency are greatly improved within the industrial-grade temperature range.

Description

technical field [0001] The invention relates to the technical field of calibration of wireless modules, in particular to a method and device for extracting calibration parameters of wireless modules. Background technique [0002] Due to factors such as the stray nature of RF device parameters, changes in ambient temperature, and long-term stability of the device, wireless (LTE) modules will exhibit different RF performance. In order to eliminate this effect, in the process of R&D and production testing, the wireless module needs to be calibrated, that is, it is necessary to measure and calculate these sensitive parameters for each radio frequency channel of each wireless module before leaving the factory to obtain the parameter error data, and calculate the parameter error data. Write these error data into the non-volatile storage medium (MCP) of the module. During normal use, the controller will read these data and use the corresponding algorithm to compensate the parameter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/11H04B17/17H04B17/21H04B17/29
CPCH04B17/11H04B17/17H04B17/21H04B17/29Y02D30/70
Inventor 唐佳玲王鑫魏波
Owner CHENGDU VANTRON TECH CO LTD
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