双/三模基片集成波导和共面波导混合结构滤波器设计  

Design of Filters Using the Hybrid Structure of Dual/Triple-Mode Substrate Integrated Waveguide and Ground Coplanar Waveguides

作　　者：刘庆[1] 周东方[1] 张德伟[1] 王树兴[1] 吕大龙[1] 张毅[1] LIU Qing;ZHOU Dong-fang;ZHANG De-wei;WANG Shu-xing;LV Da-long;ZHANG Yi(Institute of Information System Engineering,PLA Information Engineering University,Zhengzhou,Henan 450001,China)

机构地区：[1]解放军信息工程大学信息系统工程学院,河南郑州450001

出　　处：《电子学报》2018年第4期952-960,共9页Acta Electronica Sinica

摘　　要：针对微波带通滤波器小型化、高性能的应用需求,提出使用双/三模方形基片集成波导和共面波导混合结构设计带通滤波器.通过改变双模基片集成波导中TE_(102)和TE_(201)的谐振频率和外部耦合的强弱,可实现具有近似椭圆、非对称和无传输零点响应的双模滤波器;两个相同尺寸的共面波导作为谐振器蚀刻在基片集成波导表面,与TE_(102)和TE_(201)共同形成一个通带,设计具有多样性响应的四阶滤波器.在具有非对称响应四阶滤波器的基础上,使主模TE_(101)频率移动到该通带附近,设计更宽带宽的五阶滤波器.并对设计的滤波器进行加工和测试.测试结果与仿真结果吻合,表明了该混合结构设计高性能滤波器方法的可行性.A class of planar bandpass filters(BPFs)using dual/triple-mode substrate integrated waveguide(SIW)resonator and ground coplanar waveguides(GCPWs)are proposed according to miniaturization and high selectivity.The quasi-elliptic,asymmetric and non-transmission zero(TZ)response dual-mode SIW filters can be realized by changing resonance frequencies of TE 102 and TE 201,and the external couplings.Two GCPWs of the same size are etched on SIW cavity top metal plane;and the TE 102,TE 201 and two GCPWs in a single SIW cavity are combined to construct the diversified response fourth-order filters.On the basis of asymmetric and non-TZ response,the fundamental mode TE 101 can be shifted to the passband to form a fifth-order filter with wider bandwidth.The designed BPFs were fabricated and measured;and the simulated and measured results accord with each other,demonstrating the feasibility of using hybrid dual/triple-mode SIW andCPWs in a single cavity to design BPFs.

关 键 词：带通滤波器 基片集成波导 共面波导 近似椭圆响应 非对称响应 双模 三模 

分 类 号：TN715[电子电信—电路与系统]