A Calibration Method for Simplified Straight-through Connection of Multiport Vector Network Analyzer

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 simplified direct connection of a multi-port vector network analyzer. Background technique [0002] System error, random error and drift error are the three major sources of inaccurate measurement by vector network analyzer. The systematic error is caused by the imperfections of microwave and millimeter wave components. In a stable measurement environment, the system error is deterministic, repeatable, and therefore also characterizable. The use of calibration technology can effectively eliminate system errors and improve the accuracy of the test. [0003] In recent years, in order to improve the performance indicators of equipment, various multi-port and multi-function components and modules have appeared one after another, such as power synthesis networks, T / R units integrated with multiple T / R components, various feeder networks, etc., and have systems The...

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

Images