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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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The Direct TM01-TE11 Mode Converter Using Circular Waveguide for High Power Applications

원형 도파관을 이용한 초고출력용 TM01-TE11 직접 모드 변환기

  • Lee Byoung-Moo (Telecommunication Network Business, Samsung Electronics) ;
  • Lee Sang-Heun (Dept. of Electric and Electronic Engineering, Yonsei University) ;
  • Yoon Young-Joong (Dept. of Electric and Electronic Engineering, Yonsei University) ;
  • Yang Gi-Joo (Dept. of Information and Communication Engineering, Dongguk University)
  • 이병무 (삼성전자 정보통신총괄) ;
  • 이상흔 (연세대학교 전기전자공학과) ;
  • 윤영중 (연세대학교 전기전자공학과) ;
  • 양기주 (동국대학교 정보통신공학과)
  • Published : 2006.04.01
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Abstract

In this paper, a direct $TM_{01}-TE_{11}$ mode converter of circular waveguide which is used the approximated design method of mode conversion between $TM_{01}$ and $TE_{11}$ modes is designed for radiation with the maximum directivity of high power energy into air (rom high power microwave antenna system. The proposed direct $TM_{01}-TE_{11}$ mode converter is calculated and designed with an approximated method for non-linear function about an extended non-constant serpentine type of circular waveguide. Then, the designed mode converter is optimized by length of 200 mm and efficiency above 95% by FIM simulation and achieved short length and high efficiency of the antenna by results of fabricated and measured characteristics.

본 논문에서는 초고출력용 X-band 협대역 안테나 시스템으로부터 초고출력 에너지를 최대 지향성으로 방사할 수 있도록 확장된 원형 도파관의 입력 $TM_{01}$ 모드를 출력 $TE_{11}$ 모드로 직접 변환하는 장치를 설계하고 그특성을 고찰하였다. 제안된 모드 변환기는 1차 미분 커플링 방정식으로부터 $TM_{01}$와 $TE_{11}$ 모드 사이에 최대 커플링 효과를 갖도록 non-constant serpentine 형태의 비선형 함수에 대한 근사 설계법을 제안하고, X-band 10 GHz의 동작 주파수에서 200 mm의 전체 길이와 95% 이상의 변환 효율 특성을 갖도록 구현되었으며, 기존의 $TM_{01}-TE_{11}$ 직접 모드 변환기와 비교, 분석을 통해 소형, 고효율의 특성을 확인하였다.

Keywords

References

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