WIFI device repetition measurement calibration method
A calibration method and equipment technology, applied in electrical components, wireless communication, etc., can solve the problems of large difference in re-test results, failed re-tests, different environments, etc., and achieve the effect of wide application range and flexible application.
Inactive Publication Date: 2017-05-10
SHANGHAI DIANJI UNIV
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However, due to the difference between the two test instruments and the environment, there will always be a certain deviation, and when the difference between the wire and the power distribution network is relatively large, the difference between the initial test result and the retest result will be relatively large, resulting in a certain ratio If the retest fails, rework is carried out
[0003] To sum up, the disadvantages of the existing calibration methods are: the equipment and environme
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[0018] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0019] combine figure 1 , the working principle of the calibration method for retesting WIFI equipment provided in this embodiment is as follows:
[0020] First, the computer controls the transmission power of the standard DUT through the production test software. Assume that the power is A, and the power detected by the wireless tester 1 is B, A-L=B, where L is the line loss of the wireless tester 1. Then the computer record...
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The invention provides a WIFI device repetition measurement calibration method. The method is composed of the following three steps: 1, in an initial measurement environment, a first measurement instrument adopts a standard calibration method to calibrate a standard DUT; 2, in a repetition measurement environment, a second measurement instrument adopts a standard method to calibrate the standard DUT, and the environment difference between the first measurement instrument and the second measurement instrument is recorded; and 3, the environment difference is compensated to the repetition measurement environment, and in the compensated environment, repetition measurement is carried out on the standard DUT. The WIFI device repetition measurement calibration method provided by the invention is wide in application range and flexible in application; the method carries out reverse calibration on the repetition measurement environment through the standard DUT, the difference between the initial measurement environment and the repetition measurement environment is calculated, the difference is compensated to the repetition measurement environment, the difference between the initial measurement environment and the repetition measurement environment can be converged to the minimum, and the consistency between the initial measurement and the repetition measurement of products can be greatly improved.
Description
technical field [0001] The invention relates to a calibration method for retesting of WIFI equipment, belonging to the technical field of wireless communication. Background technique [0002] For WIFI equipment, the existing retest calibration method is to use two wireless testers to calibrate their own environments respectively, and then use the retester to retest the results of the initial tester. However, due to the difference between the two test instruments and the environment, there will always be a certain deviation, and when the difference between the wire and the power distribution network is relatively large, the difference between the initial test result and the retest result will be relatively large, resulting in a certain ratio If the retest fails, rework is carried out. [0003] To sum up, the disadvantages of the existing calibration methods are: the equipment and environment of the initial test and the retest are different, which affects the accuracy of the ...
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Login to View More IPC IPC(8): H04W24/02
CPCH04W24/02
Inventor 朱一群汪超
Owner SHANGHAI DIANJI UNIV