一种基于悬置带线馈电的宽带双极化阵列天线

A Wideband Dual-Polarized Array Antenna Based on Suspended Stripline Feed

摘要: 文章提出一种悬置带线馈电的宽带双极化高增益低剖面四脊喇叭阵列天线，其由悬置带线馈线、四脊喇叭和国产低损耗PCB介质板组成。辐射单元采用台阶式四脊喇叭形式，易加工且具有高增益和宽带的特性；在四脊喇叭两个相互垂直的内壁上开孔馈电，实现了双极化要求；选择低损耗PCB介质板，降低了悬置带线馈电网络传输损耗；通过调整悬置带线馈线的尺寸，有效展宽了天线驻波带宽。

Abstract: This paper proposes a wideband dual-polarized high-gain low-profile quad-ridged horn array antenna based on suspended stripline feed, composed of suspended stripline feeders, quad-ridged horns, and domestically produced low-loss PCB substrates. The radiating element adopts a stepped quad-ridged horn configuration, offering advantages such as ease of fabrication, high gain, and broadband characteristics. Dual-polarization is achieved by aperture feeding on two orthogonal inner walls of the quad-ridged horn. The use of low-loss PCB substrates reduces transmission loss in the suspended stripline feeding network, while adjusting the dimensions of the suspended stripline feeders effectively broadens the antenna’s voltage standing wave ratio (VSWR) bandwidth.