用于宽角波束覆盖的短路贴片天线设计  

Design of Shorted Patch Antennas for Wide-angle Beam Coverage

作　　者：赵书宽 吴建军 李树良[1] ZHAO Shukuan;WU Jianjun;LI Shuliang(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《微波学报》2024年第5期50-54,共5页Journal of Microwaves

摘　　要：针对宽角波束覆盖需求,本文利用辐射模式调制方法,提出了一组短路贴片天线的设计方法,分别对应相控阵天线扫描、单天线宽波束覆盖以及多波束切换三种波束覆盖理论。首先,通过利用谐振模式重分配,设计了单侧宽带短路贴片天线,可以作为具有低互耦特性的相控阵天线单元使用;在此基础上,通过对称单元设计并引入差分馈电,实现了E面宽波束天线设计;此外,利用天线相位中心偏移的特性,结合去耦措施构建了具有双波束特性的宽带短路贴片天线。通过仿真测试,本文提出的三种短路贴片天线相对工作带宽分别为11%、13%和17%,中频E面波束覆盖范围分别为111°、120°和124°,实现了宽带宽波束覆盖性能。Aiming at the requirement of wide-angle beam coverage,a design method of a set of shorted patch antennas by means of radiation mode modulation is presented,which corresponds to three beam coverage theories:phased array antenna scanning,single antenna wide-beam coverage and multi-beam switching.Firstly,a single-side wideband shorted patch antenna is designed based on the theory of resonant frequency redistribution,which can be used as a phased array antenna unit with low mutual coupling characteristics.On this basis,the design of E-plane wide beam antenna is realized through the design of symmetrical element and the introduction of differential feeding.In addition,a wideband shorted patch antenna with double-beam characteristics is constructed by using the characteristics of phase center shift and decoupling measures.Through simulation tests,the relative working bandwidths of the three shorted patch antennas proposed in this paper are 11%,13%and 17%respectively,and the E-plane beam coverage range of the center frequency is 111°,120°and 124°respectively,which achieves the performance of wide-band beam coverage.

关 键 词：宽角波束覆盖 宽带 模式调制 短路贴片天线 

分 类 号：TN822[电子电信—信息与通信工程]