Double-channel microwave signal automatic zeroing device and method for micro discharge effect detection

Abstract

The invention provides a double-channel microwave signal automatic zeroing device for micro discharge effect detection. After forwardly / reversely coupled signals are input, the signals are divided by a bridge into two parts, wherein one part is transmitted to a power monitoring module to perform parameter monitoring, and the other part is transmitted to an amplitude modulation and phase modulation channel to perform zeroing; after the signals enter the amplitude modulation and phase modulation channel, the two channels of signals are adjusted by a digitally controlled attenuator to be consistent in amplitude according to power detection data; and after the two channels of signals are made consistent in amplitude, the signals pass through a digitally controlled phase shift and enter an in-phase combiner for signal synthesis, and signal phase adjustment is carried out with the help of a zeroing signal amplitude monitoring module. The reliability of the automatic zeroing device of the invention is improved exponentially, and the service life is prolonged exponentially. No additional power meter is needed, the system structure is simplified, and the reliability of the system is improved to a certain extent. Moreover, human operation error is avoided because of the automatic zeroing function, and the effectiveness of micro discharge effect detection is guaranteed.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a micro-discharge effect detection dual-channel microwave signal automatic zeroing device, and also relates to a micro-discharge effect detection dual-channel microwave signal automatic zeroing method. Background technique [0002] The micro-discharge effect, also known as the secondary electron multiplication effect, refers to the secondary electron emission and multiplication effect excited by free electrons between two metal surfaces or on the surface of a single medium under the acceleration of an external radio frequency field under vacuum conditions. This vacuum resonance discharge phenomenon is a very important factor affecting the reliability of space electronic equipment. [0003] The micro-discharge effect mainly occurs in spacecraft and microwave systems in the near space of aviation. At present, the peak power level of spacecraft high-power microwave equipment has re...

AI Technical Summary

Problems solved by technology

[0012] The present invention proposes a micro-discharge effect detection dual-channel microwave signal automatic zeroing device and method, the purpose of which is to solve the problem of micro-discharge effect detection of spacecraft high-power microwave component loads in a high-temperature vacuum environment

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