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교차 다이폴을 이용한 이중 선형편파 반사경 안테나 피드 설계
사이르후 자활랑(Javkhlan Sharkhuu),자르갈사이칸 나이암바얄(Nyambayar Jargalsaikhan),신애령(Ailing Shen),안병철(Bierng-Chearl Ahn) 한국정보기술학회 2017 한국정보기술학회논문지 Vol.15 No.7
Dual-polarized reflector antennas are used in such applications as radar, radiometer, space radio observation, and communication. In this paper, a dual-polarized reflector antenna feed is proposed that employs crossed dipoles. The proposed feed consists of a cylindrical cavity, printed crossed dipoles and parasitic element, microstrip feed lines and baluns, and coaxial probes. Major design parameters of the feed are dipole length, dipole distance from the ground plane, dipole feed point, length and location of the parasitic dipole. An optimum design is obtained from the change of feed reflection coefficient versus design parameters of the feed. The designed feed has been fabricated and its characteristics have been measured. Measurements have shown that the proposed feed has reflection coefficient of less than -10dB and isolation of greater than 25dB -10dB beamwidth of 133° and 145° in E- and H-planes respectively at 1.9~3.0GHz.