超宽带高增益抛物面天线副瓣抑制技术  

Sidelobe Suppression of Ultral Wideband High-gain Paraboloid Antenna

作　　者：侯伶利 Hou Lingli(The 291h Research Institute of China Electronics Technology Group Corporation,610036,Chengdu)

机构地区：[1]中国电子科技集团公司第29研究所,成都610036

出　　处：《测控与通信》2023年第4期12-14,17,共4页

摘　　要：本文充分利用抛物面横向偏焦和轴向偏焦特点,采用恒电间距的单脉冲差波束实现技术,设计了频率复用0.8~6GHz单脉冲Z/△馈源,在不增加大口径天线数量的前提下,首次在大型抛物面天线上实现对超视距高增益天线(33~50dBi)的高增益副瓣抑制(副瓣的绝对增益18~35dBi)。解决了电子侦察系统中超宽带高增益抛物面天线的近区副瓣抑制问题。This paper rintroduced a method of high-gain(33~50 dBi)sidelobe suppression using the horizon and vertical focus offset characteristics of parabolic antennas.A monopluse E/△feed antenna was designed with combination of the horizon and vertical focus offset technology.Meanwhile,the ultral bandwidth(0.8~6 GHz)was realized by the constant electrical distance between two feed antennas.In the OTH(over the horizon)Elint system,the sidelobe suppression problem of ultra-band high-gain parabolic antenna was sloved for the first time according to the method proposed in this paper.The measured data showed that the high-gain sidelode was suppressed effectively without adding any large apertureantenna.

关 键 词：超宽带 高增益 副瓣抑制 

分 类 号：TN8[电子电信—信息与通信工程]