基于叠层圆形贴片的圆极化滤波天线阵列  

Circularly Polarized Filter Antenna Array based on Stacked Circular Patch

作　　者：何瑞 李文[1,2] 任建 He Rui;Li Wen;Ren Jian(School of Electronic Engineering.Xidian Unis,Xi'an 710071,China)

机构地区：[1]西安电子科技大学,西安710071 [2]天线与微波技术重点实验室,西安710065

出　　处：《测控与通信》2023年第4期18-22,50,共6页

摘　　要：本文研究了1种基于叠层贴片的圆极化滤波天线阵列。利用层叠贴片上下耦合电流相反从而辐射抵消的原理,在工作带宽外即22.3GHz产生了1个辐射零点。基于结构高度对称的形式,利用旋转圆极化实现了全频段的圆极化性能。为了验证该结构的可实现性,利用HFSS软件进行了仿真,仿真结果表明,该设计实现了11.5%(24.5-27.5GHz)的重叠带宽,阻带抑制水平大于25dB。In this paper,a circularly polarized filter antenna array based on stacked patch is investigated.By utilizing the principle that the upper and lower coupling currents of the laminated patch are opposite and thus the radiation cancels out,a radiation null is generated outside the operating bandwidth,i.e.,at 22.3 GHz.Based on the highly symmetric form of the structure,full-band circular polarization performance is achieved using rotational circular polarization.In order to verify the realizability of the structure,simulations are carried out using HFSS software.The simulation results show that the design achieves an overlapping bandwidth of 11.5%(24.5-27.5 GHz)with a rejection level of more than 25 dB.

关 键 词：微带贴片天线 圆极化 滤波天线 

分 类 号：TN8[电子电信—信息与通信工程]