一种X波段宽波束圆极化阵列天线  

A X-Band Circularly Polarized Array Antenna

作　　者：李政佑 陈曦 胡代松 傅光 Li Zhengyou;Chen Xi;Hu Daisong;Fu Guang(National Key Laboratory of Antenna and Microwave Technology,Xidian University,Xi'an 710071)

机构地区：[1]天线与微波技术国防科技重点实验室,西安电子科技大学,西安710071

出　　处：《测控与通信》2020年第4期37-40,共4页

摘　　要：本文设计了1种工作在X波段的宽波束圆极化阵列天线单元。该天线单元采用双层微带辐射器结构,通过在两层辐射器外围添加背腔结构来实现天线单元的宽波束特性,并采用该天线单元组成4×4的矩形阵列天线。计算结果表明,天线单元具有150°的半功率波瓣宽度(HPBW),相对带宽达到21.7%,轴比带宽11.7%;4×4的矩形阵列天线,在其方位面360°,俯仰扫描到±55。的范围内,增益仅下降3.4dB。A wide-beam circularly polarized array antenna element working in the X-band is designed in this paper.The antenna element has a double-layer microstrip radiator structure.The wide beam characteristics of the antenna element can be realized by adding a back cavity structure around the two-layer radiator.A 4x4 rectangular phased array antenna is composed of the antenna element.Antenna elements.The results show that the antenna element has a HPBW of 150°,a relative bandwidth of 21.7%and an AR bandwidth of 11.7%.The gain of a 4×4 array antenna decreases by only 3.4 dB in the range of 360 degrees in azimuth plane and±55°in pitch scanning.

关 键 词：圆极化 宽波束 微带阵列 

分 类 号：TN8[电子电信—信息与通信工程]