摘要
首先介绍了基片集成波导(SIW)这一新技术,并用表面电流理论解释了电磁波在SIW中的传输模式。同时,通过使用凹型过渡和接地共面波导过渡两种转换方式,解决了基片集成波导与微带线的过渡问题,从而解决了滤波器和有源微波电路的集成问题。文章用这两种过渡方式,分别设计了中心频率在5.63GHz和5.45GHz的双模带通滤波器。实验表明:这两种滤波器在通带内的反射损耗S11均优于-21dB,-3dB带宽都在50MHz以上。
A new technique called substrate integrated waveguide （SIW） is presented in this article, and then wave modes in the SIW structures are explained by using surface currents theory. The transitions of SIW with microstrip are solved by using concave transition and grounded coplanar waveguide transition, which are convenient for filters synthesized with active microwave circuits. 5.63GHz and 5.45GHz dual-mode filters have been designed by using the transitions separately. The experiment results show that the return losses are better than -21dB and -3dB bandwidths are better than 50MHz in the passband of both filters.
出处
《微波学报》
CSCD
北大核心
2007年第2期55-58,62,共5页
Journal of Microwaves
基金
上海市重点学科建设项目资助(项目编号:T0102)
国防科技预研基金(项目编号:51437080204QT0601)
关键词
基片集成波导
双模谐振器
传输零点
转换器
Substrate integrated waveguide （ SIW）, Dual-mode resonator, Transmission zero, Transition
