In order to meet the demand of high gain and large angle scanning,an offset parabolic cylinder is used as the reflector and a phase-scanned linear array is used as the feed to design an an-tenna that can focus the beams in the elevation plane and scan them in the azimuth plane at a large angle.In response to the requirement of broadband and slant polarization,with a wideband slant polarizer added to the feed aperture,a slant-polarized parabolic cylinder reflector antenna is de-signed,featuring high gain,broadband,and large-angle scanning.The simulation results show that the antenna beam scanning range can reach 90°in the azimuth plane,the normal gain of the center frequency point can up to 31.4 dBi,and when it scans to 45°,the gain decreases by less than 4.5 dB,and the difference between the horizontal and vertical polarization components does not ex-ceed 3.7 dB,which meets engineering requirements.
关键词
抛物柱面/相扫线阵/斜极化器
Key words
parabolic cylinder reflector/phase-scanned linear array/slant polarizer
维普
万方数据