Six-port microwave reflectometer self-calibration device and using method thereof

Abstract

The invention discloses a six-port microwave reflectometer self-calibration device, comprising a coupler, a phase power switching module, a single-pole-four-throw microwave switch, an inserting element module, and a single-pole-double-throw microwave switch, which has one input end and two output ends and can generate 8 sets of self-calibration signals. The phase power switching module is connected to the inserting element module though the single-pole-four-throw microwave switch. The single-pole-four-throw microwave switch and the single-pole-double-throw microwave switch are controlled by the PC to achieve automatic switching of the calibration state. According to the six-port microwave reflectometer self-calibration device, eight standard states can be generated for self-calibration ofthe six-port microwave reflectometer, and the test error is corrected, thereby greatly improving the measurement accuracy.

Description

technical field [0001] The invention belongs to the technical field of microwave testing, and relates to a self-calibration device, in particular to a microwave six-port complex ratiometer self-calibration device and a use method thereof, which can provide standard signals for the self-calibration algorithm of the six-port complex ratiometer. Background technique [0002] As one of the most important parameters of high power microwave (hereinafter referred to as HPM) measurement and calibration technology, phase has very wide application requirements. During the development of HPM devices, it is necessary to assess the input and output phase stability of the device, and study the influence of various parameters of the device on the phase stability of the output signal. In the HPM radiation field measurement, the phase distribution measurement of the radiation field power requires a high-accuracy phase measurement system to facilitate accurate judgment of the radiation field ...

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Problems solved by technology

The existing high-power microwave phase measurement mainly adopts the phase detector method, and many I / Q modulation methods are used at home and abroad. The phase detector has the disadvantages of small power capacity, small dynamic range, and nonlinearity. Compared with the active six-port method, the microwave six-port complex ratiometer has inherent advantages such as large power capacity and wide dynamic range, and self-calibration technology is one of its core technologies

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