一种寻求卡塞格伦天线最佳口径分布的方法  

A Method of Seeking Optimum Aperture Distribution of Cassegrain Reflector Antennas

作　　者：林岩[1] 

机构地区：[1]桂林空军学院,广西桂林541003

出　　处：《兵工学报》2010年第1期23-26,共4页Acta Armamentarii

摘　　要：寻求到一种确定卡塞格伦天线最佳口径分布的方法。通过卡塞格伦天线的旁瓣电平与相同口径分布的抛物面天线的旁瓣电平的对比说明了寻求卡塞格伦天线最佳口径分布的必要性;用含有旁瓣电平和口径利用效率约束条件的方程组确定卡塞格伦天线最佳口径分布;列举了求卡式天线最佳口径场分布法的可能的其它应用。研究表明,与一般口径场分布相比,该最佳口径场分布有较佳的旁瓣电平和口径利用效率,也就是说,相同旁瓣电平时口径利用效率高或相同口径利用效率时旁瓣电平低。A method of determining optimum aperture distributions of Cassegrain reflector antennas was presented.The necessity of seeking optimum aperture distribution of Cassegrain reflector antennas was illustrated by comparison of the sidelobe levels between Cassegrain reflector antennas and parabolic reflector antennas of the same aperture distributions as that of the former;optimum aperture distributions of Cassegrain reflector antennas is determined by means of simultaneous equations of constraint conditions of sidelobe level and aperture efficiency;other possible applications of the method of determining optimum aperture distributions of Cassegrain reflector antennas were enumerated.The investigated result demonstrates that compared with common aperture distribution,the optimum aperture distribution has better sidelobe level and aperture efficiency,i.e.the optimum aperture distribution has higher aperture efficiency at the same sidelobe level or lower sidelobe level at the same aperture efficiency.

关 键 词：雷达工程 口径分布 低旁瓣电平 高口径利用效率 卡塞格伦天线 

分 类 号：TN8[电子电信—信息与通信工程]