Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Improvement of Field Uniformity in a Reverberation Chamber with Various Numbers of a 2D CRD

2D CRD 수에 따른 전자파 잔향실 내의 필드 균일성 개선

  • Kim, Jin-Bok (Department of Electronics Electrical Control & Instrumentation Engineering, Hanyang University) ;
  • Rhee, Joong-Geun (Department of Electronics Electrical Control & Instrumentation Engineering, Hanyang University) ;
  • Kim, Jung-Hoon (Department of Electronics Electrical Control & Instrumentation Engineering, Hanyang University) ;
  • Rhee, Eu-Gene (Department of Electronics Electrical Control & Instrumentation Engineering, Hanyang University)
  • 김진복 (한양대학교 전자전기제어계측공학과) ;
  • 이중근 (한양대학교 전자전기제어계측공학과) ;
  • 김정훈 (한양대학교 전자전기제어계측공학과) ;
  • 이유진 (한양대학교 전자전기제어계측공학과)
  • Received : 2009.12.09
  • Accepted : 2010.04.13
  • Published : 2010.04.25
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Abstract

This paper presents the improvement of the field uniformity in a reverberation chamber which can be substitute an anechoic chamber for the electromagnetic interference (EMI) and immunity test. Nowadays, there are many EMI issues due to the increasing use of wireless local area network (LAN), digital multimedia broadcasting (DMB), and mobile internet. With this reason, this paper studied the field characteristics in a reverberation chamber for 2.3 GHz band. In this paper, the finite difference time domain (FDTD) method is used to analyze the field characteristics in a reverberation chamber. To improve the field uniformity in the reverberation chamber, this paper adopted a 2D cubical residue diffuser (CRD) with varying the disposition and number of CRD. For each case, the tolerance and standard deviation of the electric field strength are evaluated. In comparison with the reverberation chamber without any CRD, the reverberation chamber with two CRDs showed improved results; 1.98 dB improvement in standard deviation and 3.6 dB improvement in tolerance.

본 논문은 전자파장해 및 복사 내성 측정에 사용되는 전자파 무반사실의 대용 방법으로 사용되는 전자파 잔향실 내의 필드 균일성에 관한 연구이다. 최근 Wireless LAN 이나 DMB 및 휴대 인터넷 사용량의 증가로 인해 전자기파 노이즈가 다른 기기나 장비에 악영향을 미칠 것으로 예상되는 2.3 GHz 대역에 초점을 맞추었다. 본 논문에서는 전자파 잔향실 내부의 전계강도 수치해석을 위하여 시간영역 유한 차분법이 사용되었으며, 전자파 잔향실의 특성과 내부 전계강도의 균일성 개선을 위하여 2D CRD의 배치와 개수를 변화시키면서 표준 편차, 공차 특성, 편파 특성을 비교분석하였다. 전자파 잔향실의 두 면에 확산기를 부착하였을 때 확산기를 사용하지 않은 전자파 잔향실에 비하여 표준 편차는 1.98 dB, 공차 특성은 3.6 dB 만큼 개선되었다.

Keywords

References

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