Background electromagnetic interference suppression method based on spatial cancellation for on-site test of electromagnetic radiation emission

被引：0
|
作者：
Lu Z. [1 ]
Xu J. [2 ]
Lin M. [1 ]
机构：
[1] College of Electronic Science and Engineering, National University of Defense Technology, Changsha
[2] Beijing Space Vehicle General Design Department, Beijing
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2020年 / 42卷 / 07期
关键词：
Electromagnetic compatibility (EMC); Electromagnetic interferences (EMI); On-site test; Radiation emission;
D O I：
10.3969/j.issn.1001-506X.2020.07.01
中图分类号：
学科分类号：
摘要：
In the on-site test of electromagnetic compatibility, it is one of the difficult problems that need to be solved urgently, accurately extracting the electromagnetic radiation signal of the equipment under test from the environmental electromagnetic signals. Based on the principle of spatial cancellation, a new type of time domain measurement and reception system is used. In the absence of prior information such as the number and orientation distribution of environmental electromagnetic interference sources, the method can still create a virtual microwave anechoic chamber environment, so as to filter the on-site environmental electromagnetic interference and obtain the real radiation characteristics of the equipment under test. Simulation and test results show that the method can not only suppress the narrow-band and broadband steady-state interference, but also has a good effect on transient interference. In addition, the multipath interference can be effectively suppressed, which brings better operability and convenience for electromagnetic compatibility on-site test. © 2020, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：1433 / 1438
页数：5
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