S频段大频比双频相控阵天线单元研究  

Study on an S-band Dual-frequency Phased Array Element with High Frequency Ratio

作　　者：荀杨[1] 闫晓珂[1] 李亚明[2] 

机构地区：[1]中国人民解放军91404部队 [2]中国电子科技集团公司第五十四研究所

出　　处：《无线电工程》2017年第12期49-52,共4页Radio Engineering

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2013AA122101)

摘　　要：基于双频段相控阵的需求,设计了一种S频段大频比双频相控阵天线单元,提出了采用微带贴片天线和印刷偶极子天线的新型组合,解决了固定阵元间距的工程背景条件下高低频的共孔径问题,并实现了高低频在实空间内均无栅瓣。加工了所设计天线的工程样机,并对其进行了测试。测试结果表明,该双频天线在2.2~2.4 GHz和3.4~3.9 GHz频段内电压驻波系数小于1.8,低频和高频增益分别大于8 d Bi和6 d Bi,3 d B波束宽度分别大于60°和80°。Based on the requirement of the dual-band phased controlled antennas array,a S-band dual-frequency phased array element with high Frequency ratio is analyzed and designed,and a novel combination of microstrip antenna and printed dipole antenna is proposed.The shared aperture for high frequency and low frequency in the engineering condition of fix element interval is implemented,and no grating lobe exists at low frequency and high frequency.The engineering prototype of the antenna is fabricated and tested.The test results show that this dual-frequency antenna has VSWR of less than 1.8 within the bands of 2.2 ~ 2.4 GHz and 3.4 ~ 3.9 GHz,and gain of higher than 8 d Bi at low frequency and higher than 6 d Bi at high frequency,3 d B beamwidth of 60°and 80° at low frequency and high frequency.

关 键 词：大频比 双频 微带天线 相控阵单元 

分 类 号：TN822[电子电信—信息与通信工程]