EFFECT OF FEED ARRAY CONFIGURATION ON THE FIELD-OF-VIEW OF RADIO TELESCOPE ANTENNA  

作　　者：Wu Yang Du Biao Liu Xiaomeng Jin Chengjin 

机构地区：[1]National Key Laboratory of Antennas and Microwave Technology, Xidian University [2]Joint Laboratory for Radio Astronomy Technology

出　　处：《Journal of Electronics(China)》2013年第4期362-367,共6页电子科学学刊（英文版）

基　　金：Partly supported by the Ministry of Science and Technology of the People's Republic of China under the State Key Development Program for Basic Research (No. 2012CB821800)

摘　　要：Phased Array Feed (PAF) is a small two-dimensional phased array antenna, playing a role as the multi-beam feed for the reflector antenna. The prominent capability of large continuous Field-of-View (FoV) coverage and fast survey speed makes PAF the promising feed for radio telescopes. In this paper, the effect of feed array of PAF on the gain fluctuations over FoV is analyzed on a sim- plified model of the Five-hundred-meter Spherical Aperture radio Telescope (FAST), including illu- mination pattern edge taper, element spacing, element arrangement and element amount. And the differences between rectangular and hexagonal array arrangements are compared. The relationship between the FoV and array configuration are concluded at last.Phased Array Feed （PAF） is a small two-dimensional phased array antenna, playing a role as the multi-beam feed for the reflector antenna. The prominent capability of large continuous Field-of-View （FoV） coverage and fast survey speed makes PAF the promising feed for radio telescopes. In this paper, the effect of feed array of PAF on the gain fluctuations over FoV is analyzed on a sim- plified model of the Five-hundred-meter Spherical Aperture radio Telescope （FAST）, including illu- mination pattern edge taper, element spacing, element arrangement and element amount. And the differences between rectangular and hexagonal array arrangements are compared. The relationship between the FoV and array configuration are concluded at last.

关 键 词：Radio telescope Phased Array Feed （PAF） MULTI-BEAM GAIN 

分 类 号：TN820[电子电信—信息与通信工程] P111.44[天文地球—天文学]