基于开路枝节加载SIR的双频滤波器和滤波天线设计  

Design of dual-frequency filter and filter antenna based on open branch loading SIR

作　　者：严冬[1] 郭保仓 潘帅宇 杜培勋 杭锐 YAN Dong;GUO Baocang;PAN Shuaiyu;DU Peixun;HANG Rui(College of Automation,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学自动化学院,重庆400065

出　　处：《电子元件与材料》2021年第2期185-193,共9页Electronic Components And Materials

基　　金：国家重点研发计划(2019YFB2005903)。

摘　　要：在传统SIR的基础上,通过在谐振器中心加载开路枝节形成双模谐振器,并由邻近缝隙耦合馈电引入传输零点,设计出一款双频滤波器。在此滤波器基础上,将双频天线作为滤波器的第三阶谐振器,实现双频滤波天线的设计。利用奇偶模理论分析其谐振特性,将新型谐振器进行耦合,最终得到了中心频率为2.45 GHz/5.2 GHz、插入损耗为0.96 dB/1.16 dB的双频滤波器;以及中心频率为2.45 GHz/5.2 GHz,最小反射系数为-14.7 dB/-18.7 dB、最大增益为3.5 dBi/2.7 dBi的双频滤波天线。该双频滤波器和滤波天线结构简单,效果良好,具有一定的工程应用价值。Based on the traditional SIR,a dual-mode resonator was designed by loading an open stub at the center of a resonator.The transmission zero was introduced by the adjacent slot coupling feed to design the dual-frequency filter.On the basis of the filter,it was used as the third-order resonator to design dual-frequency filter antenna.The resonant characteristics of the even-odd-mode theory were analyzed,and new resonator was coupled.Finally,the central frequency of the dual-frequency filter is at 2.45 GHz/5.2 GHz with insertion loss of 0.96 dB/1.16 dB respectively.The dual-frequency filter antenna has central frequency at 2.45 GHz/5.2 GHz with minimum reflection coefficient of-14.7 dB/-18.7 dB and maximum gain of 3.5 dBi/2.7 dBi respectively.The dual-frequency filter and filter antenna have simple structure,good performance,and certain application value.

关 键 词：开路枝节加载 SIR 微带滤波器 微带滤波天线 双频段 

分 类 号：TN82[电子电信—信息与通信工程]