Self-calibration method of vector network analyzer based on ten-error model

A technology of vector network analysis and error model, applied in the field of radio frequency microsystems, can solve the problems of poor high-frequency test accuracy, high requirements for personnel operation, difficult manufacture and use, etc., to achieve improved accuracy, low parameter dependence, and convenient operation Effect

Active Publication Date: 2020-10-09
ZHEJIANG CHENGCHANG TECH
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Problems solved by technology

[0004] Although the most common SOLT (TOSM) method is simple to operate, it is highly dependent on the accuracy of the calibration standard. The parameters of the calibration standard must be completely and precisely defined. The accuracy of the calibration standard is generally given by the third-order model parameters, but the model parameters vary with The accuracy of high-frequency testing is poor, and the wear and tear of each connection will bring a certain deviation to the model parameters. This method is not suitable for high-frequency and high-precision test

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  • Self-calibration method of vector network analyzer based on ten-error model
  • Self-calibration method of vector network analyzer based on ten-error model

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[0032] Attached below

[0033] The drawings and specific embodiments further illustrate the present invention.

[0034] Such as figure 1 and figure 2 As shown, a self-calibration method of a vector network analyzer based on a ten-term error model, specifically includes the following steps:

[0035] 101) Initialization step: setting the initial state of the vector network analyzer, including start and stop frequency points, frequency step, output power, intermediate frequency bandwidth, and average times;

[0036] 102) Calibration standard parameter setting step: set the necessary pre-parameters of the calibration standard, including: through delay and insertion loss, DC resistance of the load standard, and calculate the calibration plane based on the through delay and insertion loss correction matrix;

[0037] 103) Calibration standard parameter collection steps: vector network analyzer two ports to be calibrated, sequentially connected single-port calibration standard: r...

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Abstract

The invention discloses a self-calibration method of a vector network analyzer based on a ten-error model. The method specifically comprises the following steps: 101) an initialization step, 102) a calibration standard component parameter setting step, 103) a calibration standard component parameter acquisition step, 104) a correction step, 105) a transformation processing step, 106) a step of calculating to obtain corresponding parameters, and 107) a test step. The invention provides the self-calibration method of a vector network analyzer based on a ten-error model, which only needs to calibrate the delay tau of a standard part Thru and the direct current resistance RM of an insertion loss IL and a load standard part Match (Load), and other calibration standard part parameters are automatically calculated in the calibration process.

Description

technical field [0001] The invention relates to the field of radio frequency microsystems, more specifically, it relates to a self-calibration method of a vector network analyzer based on a ten-term error model. Background technique [0002] S-parameters (scattering parameters) are the most common and important test parameters in the field of RF and microwave. They need to be measured with vector network analysis instruments. Unlike other instruments, vector network analysis instruments need to be calibrated to correct system errors before testing. The calibration method Pros and cons determine the accuracy of the calibration results and ultimately directly affect the quality of the test results. Calibration types are generally divided into three forms: coaxial, on-chip, and waveguide according to the type of test port; the calibration process is a post-processing mathematical operation process, and the necessary pre-data is obtained by connecting the test calibration standa...

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Application Information

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IPC IPC(8): G01R27/28G01R35/00
CPCG01R27/28G01R35/005
Inventor 丁旭王立平
Owner ZHEJIANG CHENGCHANG TECH
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