A Study on Design of Narrow Beamwidth Multimode Feed Horn Antenna for High Power Microwave Antenna System

초고출력 안테나 시스템 급전용 좁은 빔폭의 다중모드 혼 안테나 설계에 관한 연구

  • Lee, Sang-Heun (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Ahn, Ji-Hwan (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Yoon, Young-Joong (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • So, Joon-Ho (Agency for Defense Development)
  • 이상흔 (연세대학교 전기전자공학과) ;
  • 안지환 (연세대학교 전기전자공학과) ;
  • 윤영중 (연세대학교 전기전자공학과) ;
  • 소준호 (국방과학연구소)
  • Published : 2005.11.05

Abstract

In this paper, a modified multimode hem antenna is designed to have 142 mm horn aperture radius and 921 mm length in order to be safe under 100 MW peak pulse power at 3 cm wave length through breakdown phenomenon study that threshold field strengths for the air breakdown phenomena is decided to be 3.78 MV/m. The proposed antenna is measured gain over 27 dBi and the -25 dB beam width of 29$^{\circ}$ in vertical plane.

Keywords

Multimode;Horn;Breakdown phenomenon;maximum directivity