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Characteristics of Sequentially-Rotated Array Antenna by Varying Sequential Array Parameter

배열 정수 변화에 의한 순차 회전 배열 안테나의 특성

  • 한정세 (한국폴리텍Ⅳ 청주대학 정보통신홈네트워크과) ;
  • 이현성 (충북대학교 전자공학과) ;
  • 서동국 (충북대학교 전자공학과) ;
  • 박병우 (충북대학교 전자공학과)
  • Published : 2007.11.30

Abstract

In the sequentially rotated array antennas, the characteristics of antenna gain, axial ratio and cross polarization have been analyzed with a varying of sequential array constant(number of array element, figure of rotation) respectively. Where the antenna element of array is a probe feeding, LHCP truncated microstrip antenna whose resonant frequency is in 11.85GHz. The simulation results of 23 SRA antennas((M=2, 3, 4, 6, 8), $(1\leqP\leqM)$) has shown as follows. The widest 3dB bandwidth of axial ratio appears at P=2 which is in-dependant of M, the highest antenna gain appears when a sequential array constant has a pair of (2, 1), (3, 2), (4, 1), (6, 3), (8, 1) respectively. Specially, all of the SRA antenna appear very poor characteristics in case of M=P. Therefore the SRA antenna has to be designed as selecting a optimal sequential array constant among a lot of simulation data.

Keywords

Sequential Rotated Array;Antenna;Microstrip