The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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An Improvement of the Field Uniformity inside the Reverberation Chamber with Inclined QRD Set

경사진 QRD를 이용한 전자파 잔향실 내 전자기장 균일도 향상을 위한 연구

  • Lee, Byoung-Jun (Dept. of Electronic, Electrical, Control and Instrumentation Engineering, Hanyang University) ;
  • Kim, Hye-Kwang (Dept. of Electronic, Electrical, Control and Instrumentation Engineering, Hanyang University) ;
  • Rhee, Joong-Geun (School of Electrical Engineering and Computer Science, Hanyang University)
  • 이병준 (한양대학교 전자전기제어계측공학과) ;
  • 김혜광 (한양대학교 전자전기제어계측공학과) ;
  • 이중근 (한양대학교 전자컴퓨터공학부)
  • Published : 2007.06.30
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Abstract

The field uniformity inside the reverberation chamber has been improved using sets of quadratic residue diffuser (QRD). The electromagnetic field inside the reverberation chamber with the dimension of $100{\times}80{\times}80cm$ has been analyzed by the finite-difference time-domain(FDTD) method. The calculated fields in a $40{\times}30{\times}30cm$ test volume have been sampled to obtain a standard deviation and field uniformity. Results show that the standard deviation of the calculated field and uniformity have been improved by varying angles and orientation of the inclined surfaces of the QRDs installed inside the reverberation chamber.

Schroeder 방식의 QRD(quadratic Residue Diffuser) 구조에서 더욱 진화한 경사진 QRD를 사용하여 전자파 잔향실(reverberation chamber) 내의 전자기장 균일도를 향상시켰다. FDTD(Finite-Difference Time-Domain) 수치 해석방식을 이용하여 $2{\sim}3GHz$ 대역에서의 전자파 잔향실 내의 전자기장의 분포를 해석하였다. QRD 경사 각도의 조절과 경사 방향을 전환하여 전자파 잔향실 내부의 시험 공간에서의 E_x,\;E_y,\;E_z$ 샘플의 표준편차 및 공차가 각각 0.3 dB, 2.5 dB 향상되고 전체적으로 전자기장 분포의 균일성이 확보되었다.

Keywords

References

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