微带型集成基片间隙波导圆极化缝隙行波阵列天线  

Circularly Polarized Slot Traveling Wave Antenna Array Based on ISGW

作　　者：王艺安 申东娅[1] Wang Yian;Shen Dongya(Yunnan Provincial Engineering.Lab.of Cloud Wireless Access&Heterogeneous Network,School of Information,Yunnan University,Kunming,YN 650500,China)

机构地区：[1]云南大学,云南省云无线接入与异构网络工程实验室,云南昆明650500

出　　处：《测控与通信》2020年第4期11-16,共6页

基　　金：国家自然科学基金(61561052,61561051,61861046)。

摘　　要：本文提出了1种微带型集成基片间隙波导(ISGW)缝隙圆极化行波天线。该天线由巧妙组合的两个矩形缝隙作为圆极化辐射器,使用微带型ISGW对缝隙进行耦合馈电,从而实现了圆极化波的辐射。并通过串联组阵的方式实现了对该天线单元方向图的优化,获得了窄波束,低副瓣,高增益的圆极化缝隙行波阵列天线。该阵列天线由2×7个矩形缝隙组成圆极化辐射器,利用贯穿PCB的微带型ISGW对缝隙进行串馈,通过馈电端口的改变实现了左/右旋圆极化波的辐射。仿真结果表明,天线的-10 dB相对阻抗带宽为41.8%,3dB相对轴比带宽为16.2%,最大增益为13 dBi。A microstrip ISGW slot circularly polarized traveling wave antenna is presented in this paper.The antenna consists of two rectangular slots which are ingeniously combined as circularly polarized radiators.The microstrip ISGW is used to couple the slots and feed them,thus realizing the radiation of circularly polarized waves.The antenna element pattern is optimized by series array.A circularly polarized slot traveling wave array antenna with narrow beam,low sidelobe and high gain is obtained.The array antenna consists of 2×7 rectangular slots,which are fed in series by microstrip ISGW through PCB,and the radiation of left/right circularly polarized wave is realized by changing the feeding port.The simulation results show that the relative impedance bandwidth of-lOdB is 41.8%,the relative axis ratio bandwidth of 3dB is 16.2%,and the maximum gain is 13dBi.

关 键 词：集成基片间隙波导(ISGW) 圆极化天线 行波天线 

分 类 号：TN8[电子电信—信息与通信工程]