低损耗双谐振微带带通滤波器设计  

Design of a Low Loss Microstrip Bandpass Filter with Double Resonance

作　　者：李勇[1] 邹传云[2] 

机构地区：[1]成都理工大学工程技术学院,四川乐山614007 [2]西南科技大学信息工程学院,四川绵阳621010

出　　处：《电讯技术》2013年第8期1074-1078,共5页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61075030)~~

摘　　要：为了既满足实现双谐振的零度馈电结构,又能实现阻抗匹配,采用双点双线馈电技术和具有开口环、阶跃阻抗谐振双重特性的结构设计双通带滤波器。版图仿真结果表明:两个谐振频率分别为2.7 GHz和5.05 GHz,符合射频电子标签所需的两路信号,其对应的回波损耗分别为-38 dB和-49 dB,插入损耗为-0.2 dB和-0.4 dB,从而实现了低损耗特性和尖锐的选择性。In order to realize impedance matching and meet the zero feed structure which realizes double resonance,double point dual feed technology and double characteristic structure of split ring and SIR are adopted to design a double bandpass filter.The simulation results show that two resonant frequencies are 2.7 GHz and 5.05 GHz,which correspond directly with the two channels signal of radio frequency electronic label.The corresponding echo losses are-38 dB and-49 dB,and the insert losses are-0.2 dB and-0.4 dB,thereby to realize the low loss characteristics and sharp selectivity.

关 键 词：微带带通滤波器 双点双线馈电 阶跃阻抗谐振器 开口环 双通带 

分 类 号：TN713[电子电信—电路与系统]