Multi-port automatic calibration method and system suitable for radio frequency testing machine
A radio frequency test and automatic calibration technology, applied in measurement devices, measuring electrical variables, instruments, etc., can solve problems such as insufficient efficiency and accuracy, and achieve the effects of low cost, reduced requirements, and flexible testing
Active Publication Date: 2022-06-24
南京派格测控科技有限公司
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[0005] The present invention provides a multi-port automatic calibration method and system suitable for radio frequency testing machines, which are used to solve the defects of insufficient efficiency and precision in the prior art, and realize efficient and accurate automatic calibration
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[0063] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0064] Combine below Figure 1-Figure 4 The multi-port automatic calibration method applicable to the radio frequency tester of the present invention is described.
[0065] like figure 1 As shown, an embodiment of the present invention provides a multi-port automatic calibration method suitable for a radio frequency tester, including:
[0066] Step 102: Connect the port of the multi-port radio frequency testing ...
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The invention relates to the technical field of integrated circuit testing, and provides a multi-port automatic calibration method and system suitable for radio frequency testing machines. The method includes: connecting the port of the radio frequency testing machine to the calibration device and performing the test to obtain the first test data; solving the preset error equation based on the first test data to obtain multiple sets of error coefficients, and weighting the multiple sets of error coefficients based on the Smith triangle weight Error coefficient to get the calibration coefficient group. By introducing the weight of Smith triangle, the present invention carries out weighted average of the error parameter results on the basis of considering each calibration device set and impedance matching, so that the automatic calibration process based on multiple measurements can obtain more accurate error parameters, thereby being more effective At the same time, in the calibration method based on Smith's triangle weight, only calibration devices with different impedances can be used to complete the calibration, which reduces the requirements for calibration devices, thus making the test more flexible and lower in cost.
Description
technical field [0001] The invention relates to the technical field of integrated circuit testing, in particular to a multi-port automatic calibration method and system suitable for a radio frequency testing machine. Background technique [0002] RF front-end testers need to be calibrated before testing. Instrument error is divided into drift error, random error and systematic error. Among them, drift error and random error are non-repetitive errors that cannot be measured by the system, so the main purpose of the calibration process is to eliminate systematic errors. The basis of error correction is to measure some known standard parts, such as shoot-through, load, short-circuit and open-circuit. By measuring these standard parts, the systematic error parameters that cause measurement errors are obtained, so as to be corrected in the actual measurement process. [0003] The traditional test is manual operation, which requires constant screwing of the calibration piece. O...
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IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 胡信伟戴海平侯林李翔
Owner 南京派格测控科技有限公司