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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Study on Near-Field to Far-Field Transformation Using Stratton-Chu Formula

Stratton-Chu 공식을 이용한 측정된 근거리장에서 원거리장으로의 변환에 관한 연구

  • Lee, Jeong-Seok (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Song, Tae-Lim (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Du, Jin-Kyoung (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Koo, Tae-Wan (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Yook, Jong-Gwan (Department of Electrical & Electronic Engineering, Yonsei University)
  • 이정석 (연세대학교 전기전자공학과) ;
  • 송태림 (연세대학교 전기전자공학과) ;
  • 두진경 (연세대학교 전기전자공학과) ;
  • 구태완 (연세대학교 전기전자공학과) ;
  • 육종관 (연세대학교 전기전자공학과)
  • Received : 2012.11.30
  • Accepted : 2013.02.20
  • Published : 2013.03.31
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Abstract

This paper deals with the near-field to far-field calculation for far-field characteristics of antenna and electromagnetic compatibility(EMC) testing. Since the conventional EMC testing process is inefficient such as measurements of the wide band signals and mega structures, Stratton-Chu formula is used to predict the far-field emission by simple and direct process. The usefulness of Stratton-Chu formula is verified by comparing to the analytic solution of the uniform distribution aperture in free-space. In order to inspect the far-fields and to get the near-field values, full-wave simulation solver is utilized. Through the full-wave simulation about the patch antenna, calculated far-field results from Stratton-Chu formula are proven. The predicted magnitudes of the far-field are in error by less than 6 %.

본 논문에서는 안테나의 원거리장 특성 및 Electromagnetic Compatibility(EMC) testing을 위한 근거리 원거리장 변환에 대한 연구이다. EMC testing은 광대역 신호 및 거대 구조에 대한 원거리장 측정과 같은 복잡한 과정이 필요하다. EMC 측정 문제를 해결하기 위해, Stratton-Chu 공식을 이용하여 간단하고 직접적인 방법으로 원거리장을 예측하였다. 특히 Stratton-Chu 공식을 이용한 예측은 자유 공간상의 평면파를 통해 해석값을 비교하여 유효성을 검증했다. 패치 안테나의 근거리장 추출과 원거리장 확인을 위해, full-wave 시뮬레이션을 이용하여 Stratton-Chu 계산 결과를 비교 및 검증하였으며, 6 % 이내의 오차로 원거리장의 크기를 예측했다.

Keywords

References

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