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


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.


  1. M. Thumm, 'Modes and mode conversion in microwave devices', IOP Generation and Application of High Power Microwaves, vol. 57, no. 6, pp. 121-171, 1997
  2. R. Eisenhart, 'A novel wideband TM01 to TE11 mode converter', IEEE MTT-S Int. Microw. Symp. Dig., pp. 249-252, 1998
  3. B. M. Lee, W. S. Lee, Y. J. Yoon, and J. So, 'X-band TM01-TE11 mode converter with short length for high power', IEE Electronic Letters, vol. 40, no. 18, pp. 1126-1128, Sep. 2004
  4. S. Yang, H. Li, 'Numerical modeling of 8 mm TM01-TE11 mode converter', Int. J. of Infrared and Millimeter Waves, vol. 16, no. 11, pp. 1935-1943, 1995
  5. S. Yang, H. Li, 'Optimization of novel high-power millimeter-wave TM01-TE11 mode converters', IEEE Trans. on Microw. Theory and Tech., vol. 45, no. 4, pp. 552-554, 1997
  6. M. Thumm, 'Mode conversion due to curavture in corrugated waveguides', Int. J. Electronics, vol. 71, no. 2, pp. 333-347, 1991