Vector network analyzer multi-port calibrating method capable of simplifying through connection

Abstract

The invention provides a vector network analyzer multi-port calibrating method capable of simplifying through connection. The method comprises the steps of conducting single-port calibration on a vector network analyzer by means of a standard open circuit, a standard short circuit and a standard load calibration piece to acquire the single-port error coefficient of each port, connecting two ports to be measured by means of a through connection piece or an adapter to conduct through connection measurement and acquire the transmission tracking error coefficient and the load matching error coefficient, and calculating the transmission error coefficient of implicit through connection by means of the single-port error coefficients, the transmission tracking error coefficient and the load matching error coefficient. According to the calibrating method, through connection frequency is reduced greatly; when the types of cable connectors are identical, connection and measurement can be conducted on connectors with different polarities only by selecting connecting relations, connection of connectors with the same polarity is avoided, connection of the adapter and requirements for the adapter are omitted in a test, and calculation involving unknown through connection is avoided in multi-port calibration.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a calibration method for simplifying direct connection of a multi-port vector network analyzer. Background technique [0002] Systematic error, random error, and drift error are the three major sources of inaccurate measurement by vector network analyzers. The system error is the error introduced by the imperfection of microwave and millimeter wave components. In a stable measurement environment, systematic errors are deterministic, repeatable, and thus characterizable. The use of calibration technology can effectively eliminate the system error and improve the accuracy of the test. [0003] In recent years, in order to improve the performance index of equipment, various multi-port and multi-functional components and modules have appeared one after another, such as power combining network, T / R unit integrated with multiple T / R components, various feeder networks, etc., and have...

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes a calibration method for simplifying the through connection of a multi-port vector network analyzer. By simplifying the number of through connections in the calibration, the number of connections is reduced to n-1, effectively solving the problem of multi-port calibration complexity

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