A Novel Dual-Band SIW Filter with High Selectivity

被引：9
|
作者：
Wu, Yu-Dan [1 ]
Li, Guo-Hui [1 ]
Yang, Wei [1 ]
Mou, Tong [1 ]
机构：
[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Network, Shanghai 200072, Peoples R China
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2016年 / 60卷
关键词：
D O I：
10.2528/PIERL16032401
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel dual-band substrate integrated waveguide (SIW) filter with multiple transmission zeros and good out-of-band rejection performance is presented in this paper. For this purpose, an orthogonal input/output (I/O) feeding structure directly connected to the substrate integrated waveguide (SIW) cavity is designed to split the resonant frequencies of the degenerate pair of mode. The filter can be modeled with a multi-path circuit formed by three modes (TE101, TE201 and TE102 modes) and weak cross coupling between I/O ports, thereby producing three transmission zeros which make the dual-band high selectivity. The offset of the input/output ports shifts the second transmission zero to a lower frequency from the upper passband. Several filter prototypes are designed and fabricated for demonstration, and the measured results validate the new structure for high selectivity applications.
引用
收藏
页码：81 / 88
页数：8
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