基于SIR多模谐振器的双频滤波天线设计  

Design of Dual-Band Filtering Antenna Based on SIR Multi-Mode Resonator

作　　者：蒋铁珍[1] 王建华[1] 安琪 王安琪[1] JIANG Tiezhen;WANG Jianhua;AN Qi;WANG Anqi(School of Integrated Circuits,Anhui University,Hefei 230601,China)

机构地区：[1]安徽大学集成电路学院,安徽合肥230601

出　　处：《安庆师范大学学报（自然科学版）》2024年第3期42-47,共6页Journal of Anqing Normal University(Natural Science Edition)

基　　金：安徽省高校科研重点项目(2023AH050083);安徽省自然科学基金项目(1608085MF135)。

摘　　要：本文设计了一款基于多模谐振器的双频滤波天线,其滤波谐振器采用阶跃阻抗谐振(SIR)来进行枝节末端分流结构小型化设计,可以灵活控制两个频段的中心频率。与加载开路短截线的矩形单极子天线相比,集成设计构成滤波天线,其工作在ISM频段(工业、科学和医学频段),两通带外引入3个辐射零点,实现了工作频段的高选择性,增益分别为1.60 dBi和4.03 dBi。测试结果表明,该天线反射系数、峰值增益和辐射方向图与设计仿真结果吻合良好,具有较好的滤波和辐射特性。A dual-band filtering antenna based on multi-mode resonator is designed in this paper.The filter resonator uses stepped impedance resonator(SIR)to miniaturize the split-end shunt structure,which can flexibly control the center frequencies of two frequency bands.The filtering antenna is integrated with the rectangular monopole antenna loaded with open-circuit truncated line.It works in ISM frequency band(industrial,scientific and medical frequency band).Three radiation zeros are introduced outside the two passbands,achieving high selectivity for the operating frequency band,with gains of 1.60 dBi and 4.03 dBi,respectively.The test results show that the reflection coefficient,peak gain and radiation direction map are in good agreement with the design simulation results,demonstrating good filtering and radiation characteristics.

关 键 词：滤波天线 多模谐振器 单极子天线 双频段 辐射零点 

分 类 号：TN821.3[电子电信—信息与通信工程]