双频带圆极化微带阵列天线设计  

Design of Dual-band Circularly-Polarized Micro-strip Patch Array

作　　者：胡金艳 杨君 秦文华[1] 赵建平[1] 徐娟[1] HU Jin-yan;YANG Jun;QIN Wen-hua;ZHAO Jian-ping;XU Juan(College of Physics and Engineering, Qufu Normal University, Qufu Shandong 273165, China)

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜273165

出　　处：《通信技术》2018年第1期234-239,共6页Communications Technology

基　　金：山东省博士基金项目(No.ZR201702170265);国家青年科学基金项目(No.61701278)~~

摘　　要：利用旋转馈电技术设计了一种双频带圆极化微带阵列天线,以扩充天线的通信容量,提高抗干扰能力。天线由四个对角切角的矩形贴片和一个金属矩形环组成。天线利用贴片切角实现圆极化,利用两个贴片的对角线长度不等实现双频特性。天线中心的矩形环既可当做馈电网络,为圆极化波提供所需的递增相位,又可以提高天线的辐射性能。最后,利用电磁仿真软件HFSS对天线的性能进行数值计算,阵列天线的-10 d B阻抗带宽分别为1.3~1.4 GHz和1.55~1.58 GHz,3 d B轴比带宽分别为1.36~1.42 GHz和1.6~1.62 GHz。A dual-band circularly-polarized micro-strip patch array, by using a sequential-phase feeding network, is designed and implemented, thus to expand the communication capacity and improve the anti-interference capability. The antenna, composed of four rectangular patches with diagonally tangential angles and one metal rectangular ring, is circularly-polarized by using the corner patch, while the dual-frequency is realized by using the unequal diagonal lengths of two patches. The mental square ring in the center of the antenna may act as a feeding network, which provides both the increasing phase for circularly-polarized wave and a radiator to enhance the performance of the antenna. Finally, the simulation on the antenna with HFSS software indicates that the -10 dB impedance bandwidth of the patch array is 1.3～1.4 GHz and 1.55～1.58 GHz , and the measured 3dB AR bandwidth 1.36～ 1.42 GHz and 1.6～ 1.62 GHz respectively.

关 键 词：旋转馈电 双频带 圆极化 微带阵列 

分 类 号：O451[理学—无线电物理]