基于互补裂环谐振器的集成波导双工器设计  

Design of an Integrated Waveguide Diplexer Based on Complementary Split Ring Resonators

作　　者：李辰晶 周永刚[1] 金耀[1] 李福绅 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016

出　　处：《电子科技》2014年第4期72-75,共4页Electronic Science and Technology

基　　金：江苏高校优势学科建设工程基金资助项目

摘　　要：提出了一种基于圆形互补裂环谐振器的新型基片集成波导双工器。该款双工器工作在C波段,两个通道滤波器的工作频率均低于基片集成波导谐振腔的截止频率,由此达到小型化的目的,通道滤波器的体积较传统基片集成波导滤波器缩小约30%。圆形互补裂环谐振器较方形互补裂环谐振器的小型化效果好,并且更易设计。文中提出了一种新的增加通道隔离度方法,即在两个互补裂环谐振器之间切开一个缝隙。该款双工器已被加工成实物,实测两通道插入损耗为1.75 dB(@3.92 GHz)和1.62 dB(@4.62 GHz),隔离度>37 dB,实测数据和仿真结果吻合。A novel substrate integrated waveguide （SIW） diplexer with circular complementary split-ring re- sonators （CSRRs） is presented. The proposed diplexer working in C-band operates below the characteristic cutoff frequency of SIW and two channel filters of this diplexer are nearly 30% smaller than traditional SIW ones. Circular CSRRs, which perform better than square CSRRs at compact structure, are adopted to further reduce the size of channel filters, and a slot is cut between two CSRRs to increase the isolation. A proposed diplexer is fabricated and measured. The measured insertion losses are 1.75 and 1.62 dB in the lower and upper passbands centered at 3.92 and 4. 62 GHz. The isolation is higher than 37 dB. A perfect agreement is achieved between the simulation and measurement.

关 键 词：互补裂环谐振器 微波双工器 基片集成波导 小型化 

分 类 号：TN713.5[电子电信—电路与系统]