학술논문
마이크로스트립 선로를 이용한 EMI 시트의 광대역 자기장 차폐 측정 방법
Document Type
Academic Journal
Author
Source
한국전자파학회논문지. 2023-07 34(7):554-560
Subject
Language
Korean
ISSN
1226-3133
2288-226X
2288-226X
Abstract
본 논문에서는 전자파 간섭(EMI)을 차단하거나 억제하기 위해 사용되는 얇은 EMI 시트의 근역 자기장 차폐 특성을 측정하는 IEC 62333-2 표준 방법과 마이크로스트립 선로를 이용한 측정 방법을 수치해석을 통해 비교 검토하였다. 근역 자기장을 발생시키는 소스(source)로서 제안된 마이크로스트립 선로를 IEC 62333-2 방법에서 제시된 원형 루프 프로브와 비교하였을 때, 비록 자기장의 세기는 약하지만 광대역의 균일한 근역 자기장을 발생시킬 수 있음을 확인하였다. 또한 수신 프로브로 원형과 사각형 루프를 비교하였는데, 결합 특성은 사각형 루프가 더 우수하였고, 수신 프로브의 변위에 따른 차폐효과 오차는 원형 루프가 더 작았다.
In this study, the near magnetic field shielding measurement method using a microstrip line is analyzed and compared with the IEC 62333-2 standard method for thin electromagnetic interference (EMI) sheets that are used to prevent or suppress the noise coupling through numerical simulation. A comparison of the microstrip line as a source for generating a near magnetic field with the circular loop probe presented in the IEC 62333-2 method confirmed that although the strength of the magnetic field was weak, it could generate a uniform near magnetic field in a wide frequency range. In addition, for a receiving probe, the rectangular loop showed better coupling characteristics than the circular loop.
In this study, the near magnetic field shielding measurement method using a microstrip line is analyzed and compared with the IEC 62333-2 standard method for thin electromagnetic interference (EMI) sheets that are used to prevent or suppress the noise coupling through numerical simulation. A comparison of the microstrip line as a source for generating a near magnetic field with the circular loop probe presented in the IEC 62333-2 method confirmed that although the strength of the magnetic field was weak, it could generate a uniform near magnetic field in a wide frequency range. In addition, for a receiving probe, the rectangular loop showed better coupling characteristics than the circular loop.