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Device and method for calculating and zeroing phase difference value applied to detection of micro-discharge effect

A technology of micro-discharge effect and phase difference value, applied in measuring devices, measuring electrical variables, instruments, etc., can solve problems such as micro-discharge effect detection, and achieve the effect of improving detection sensitivity, realizing detection ability, and shortening test and test time.

Active Publication Date: 2019-09-24
CHINA ELECTRONIS TECH INSTR CO LTD
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Problems solved by technology

[0010] The purpose of the present invention is to propose a phase difference value calculation and zeroing device applied to the detection of micro-discharge effects, so as to solve the problem of detection of micro-discharge effects in high-power microwave components of spacecraft currently loaded in a high-temperature vacuum environment

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  • Device and method for calculating and zeroing phase difference value applied to detection of micro-discharge effect
  • Device and method for calculating and zeroing phase difference value applied to detection of micro-discharge effect
  • Device and method for calculating and zeroing phase difference value applied to detection of micro-discharge effect

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0044] Such as image 3 As shown in the figure, a zero-adjustment device for phase difference calculation applied to the detection of micro-discharge effects includes two channels of amplitude modulation and phase modulation, each of which is provided with an attenuator and a phase shifter.

[0045] In this embodiment, the two AM and PM channels are marked as AM and PM channels 1 and 2 respectively.

[0046]An attenuator 3 and a phase shifter 4 are provided on the AM and phase modulation channel 1, and an attenuator 5 and a phase shifter 6 are provided on the AM and phase modulation channel 2. Preferably, the attenuator 3 and the attenuator 5 can use digitally controlled attenuators.

[0047] The zero-setting device in the present invention also includes a directing combiner 7 and an automatic switching device 8 for signal amplitude monitoring...

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Abstract

The invention discloses a phase difference value calculation and zeroing device and method for micro-discharge effect detection. Among them, the device of the present invention is based on the technical requirements of micro-discharge effect detection, combined with the technical characteristics of the tested part itself, and uses attenuators, phase shifters and in-phase combiners to realize dual-channel microwave Fully automatic zeroing of the signal. The method of the present invention combines the principle of micro-discharge effect detection forward / backward power zeroing technology and the theoretical analysis of the in-phase combiner, and adopts the phase difference calculation algorithm of the combined signal to directly calculate the phase difference of the two signals, which effectively improves the The automatic zero-adjustment efficiency can ensure that the zero-adjustment signal amplitude is adjusted below -80dBm, which improves the system detection sensitivity and test efficiency.

Description

technical field [0001] The invention relates to a zero-setting device and method for phase difference value calculation applied to micro-discharge effect detection. 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 under vacuum conditions under the acceleration of an external radio frequency field between two metal surfaces or on the surface of a single medium. The phenomenon of vacuum resonance discharge is a very important factor affecting the reliability of space electronic equipment. [0003] The microdischarge effect mainly occurs in the radio frequency, microwave, and millimeter wave systems of the spacecraft. A spacecraft that works normally in space orbit will be affected by factors such as external high-energy plasma, high-vacuum environment, its own structure size, transmission signal frequency and power,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00
Inventor 雷卫平段志强郭荣斌张国锋付存文
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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