8x8 high-precision broadband millimeter-wave matrix switches and microwave parameter evaluation and calibration method

Abstract

The invention provides 8x8 high-precision broadband millimeter-wave matrix switches and a parameter evaluation and calibration method. Switch minimization and link symmetry design is adopted for radio-frequency links, symmetric uplink and downlink link channels are designed, each channel realizes 8x8=64 independent radio-frequency links, each channel is formed by cascading of four SP4T microwave switches and two SPDT microwave switches, and a comb-shaped cross-cascading connection manner of semi-rigid coaxial cables is adopted among the switches; and a good port impedance matching characteristic of the matrix switches in an entire broadband frequency band of DC-40GHz can be guaranteed, radio-frequency channel loss is lowest, precision of radio-frequency channel amplitude consistency and phase consistency is high, the matrix switches have the advantages of high performance, small volume, automation and the like, a product design and debugging process is standardized and automated, and aresearch and development cycle of batch products is greatly shortened.

Description

technical field [0001] The invention belongs to the technical field of millimeter-wave automatic testing, and in particular relates to a high-precision broadband millimeter-wave 8x8 matrix switch and a method for evaluating and calibrating multi-channel microwave parameters. Background technique [0002] With the continuous development of communication systems and measurement and control systems, networking, integration, modularization, generalization, and intelligence have gradually become the mainstream, and the effective allocation of system resources has become a very important topic, and the reuse and reorganization of radio frequency resources are among them. an effective way. The traditional multi-port test steps require frequent manual connection of test cables and repeated manual connection of matching loads at idle ports of the DUT, which has the disadvantage of poor repeatability, and limits test speed, test efficiency and accuracy. Some matrix switches currently...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention aims to break through the traditional multi-port test steps, avoid repeated manual connection of test cables, and repeated manual connection of matching loads at idle ports of the test piece, and solve the shortcomings of frequent manual repeated connections and poor repeatability. Greatly improve the test efficiency of complex products or batch products, and can ensure the integrity, consistency and validity of test data during product environmental tests

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