应用ATA的对数周期馈源方案于FAST的可能性探讨  

On Possibilities of Applying the LPA Scheme for the ATA to the FAST

作　　者：吴盛殷[1] 熊继衮[2] 吕善伟[3] 张江林[3] 徐祥[1] 南仁东[1] 金乘进[1] 

机构地区：[1]中国科学院国家天文台,北京100012 [2]航天总公司第23所,北京100854 [3]北京航空航天大学电子工程系,北京100083

出　　处：《天文学进展》2004年第2期179-187,共9页Progress In Astronomy

摘　　要：介绍应用于美国凤凰计划的Allen望远镜阵(ATA)的对数周期馈源(LPA)概况,初步给出此种馈源的基本参数及性能,仿真估算了其驻波比和方向图,并结合正在进行中的我国500m孔径球面射电望远镜(FAST)计划,探讨了应用这种宽带馈源的可能性及其限制。Allen Telescope Array(ATA) is a radio telescope array applied in the project Phoenix, US. The array will be operated from 0.5 to 11 GHz. A wide-band feed and an integrated MMIC front end will be equipped on each of 350 antennas in diameter of 6.1 m. A general introduction of the array and an initial analysis of performance and parameters of associated LPA feeds are presented in the paper. Preliminary simulation of the feed has been performed and indicated. The possibility of applying this kind of feed in the FAST project is discussed briefly at the end of the paper.

关 键 词：天文观测设备与技术 馈源 对数周期天线(LPA) 500 m球面射电望远镜(FAST) Allen望远镜阵(ATA) 仿真 

分 类 号：P111.44[天文地球—天文学]