宽频宽角圆极化一维相扫天线阵

一种宽频宽角圆极化一维相扫天线阵

内容简介：基于改进型Vivaldi天线单元，采用4单元十字交叉组合构成圆极化天线，并通过增加耦合金属立柱改善天线轴比，设计了一种超宽频宽角覆盖圆极化直线阵。该天线在1.25-4.1 GHz频段电压驻波比（VSWR）小于2，在1.6-3.6 GHz频段轴比小于3 dB，在垂直扫描方向具备宽角覆盖能力，具备较高的工程应用价值。

Abstract：Based on improved Vivaldi antenna unit, using four crossed units constitutes a circularly polarized antenna, further improving axial ratio (AR) by adding the coupling metal columns, an ultra-broadband wide-angle circularly polarized linear an-tenna array is designed. The voltage standing wave ratio (VSWR) of the antenna is less than 2 at the frequency range of 1.25 to 4.1 GHz. Meanwhile, the AR is less than 3 dB at the frequency range of 1.6 to 3.6 GHz. This antenna has very wide angle cover-age ability, and has high engineering value.

作者：陈谦, 李磊, 张小林,

关键词：天线, 宽频带, 圆极化, 宽角覆盖,