Calibration apparatus and calibration method for calibrating vector network analyser

Abstract

The invention relates to the technical field of characteristic parameter testing technique for microwave millimeter wave components and specifically relates to a calibration apparatus and a calibration method for calibrating a vector network analyzer. According to the technical scheme of the calibration apparatus and the calibration method, the shoot-through calibration process is simplified, and shoot-through electronic standard parts are realized by means of a single-pole multi-throw microwave switch in a specified connection mode. When N ports of electronic calibrating devices are to be calibrated, the number of shoot-through electronic standard parts to be implemented is reduced from N(N-1)/2 to (N-1). In this way, the number of shoot-through electronic standard parts to be implemented is prevented from rapidly rising along with the number of ports. Meanwhile, the insertion loss of shoot-through electronic standard parts is greatly reduced. Therefore, the accuracy of multi-port electronic standard parts is improved. The design implementation of multi-port electronic calibration devices with multiple ports is also facilitated.

Description

technical field [0001] The invention relates to the technical field of testing characteristic parameters of microwave and millimeter wave components, in particular to a calibration device and a calibration method for calibrating a vector network analyzer. Background technique [0002] By using a multi-port vector network analyzer to measure the microwave multi-port module, its precise amplitude-frequency and phase-frequency characteristic vector information can be obtained. The characteristics of the measurement system consisting of accessories such as multi-port vector network analyzers and measurement cables are not ideal and contain various systematic errors. Therefore, calibration must be performed before measurement to extract various systematic errors of the entire measurement system, and then in subsequent measurements In the process, by using error correction technology to remove the influence of various system errors on the measurement accuracy, the accurate amplitu...

AI Technical Summary

Problems solved by technology

[0014] 1) When the existing multi-port electronic calibration performs through-calibration, the number of through-calibration measurements required increases rapidly with the number of ports approximately according to the law of the square rate, the calibration process is cumbersome, the required calibration time is too long, and too many The repeatability error of the measurement connection is not conducive to improving the measurement efficiency and accuracy, and also restricts the realization of multi-port electronic calibration components with a large number of ports

[0015] 2) The biggest disadvantage of traditional multi-port electronic components is that the number of through-standards increases rapidly with the number of ports approximately accor

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