基于新型CRLH-TL的双通带带通滤波器设计与仿真  

Dual-Band Bandpass Filter Using Novel CRLH Transmission Line

作　　者：王海猛[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《中国电子科学研究院学报》2008年第5期502-506,共5页Journal of China Academy of Electronics and Information Technology

摘　　要：提出了一种基于新型平面结构复合左右手传输线(CRLH-TL)带通滤波器设计方法。新型CRLH-TL结构由微带与共面波导双面结构在一定频率下通过耦合等效形成,左手电容部分通过介质基板上表面的金属板与接地面的互耦环缝谐振(CSRR,complementary split rings resonators)的中心导带耦合形成,使得加工简单;左手电感部分由CSRR部分形成,避免了过孔等带来的麻烦与损耗。基于此的带通滤波器结构紧凑,易于实现大宽带,性能优良,通带内插入损耗较好。The Dual-Band band pass filter using novel CRLH-Transmission line of flat surface structured. The CRLH-TL is composed by micro strip as well as CPW through a compact with each other. Left-handed Capacitor is formed by a compact Capaeitor through upper metal as well as CSRR （Complementary split rings resonators） of ground plane. This idea makes it easy to get the novel CRLH-TL. Left-handed Inductance is provided with CSRR. Both Difficulty and Loss because of through-hole is avoided. As the base of the Filter theory simple cascade structure of the novel CRTH-TL results in the dual band pass filter. So, the filter can be easily implemented. Besides, performance of band pass filter is fine.

关 键 词：左手介质 互耦环缝谐振 带通滤波器 双通带 

分 类 号：TN713.5[电子电信—电路与系统]