Quasi-Elliptic Filter Based on SIW Combline Resonators Using a Coplanar Line Cross-Coupling

被引：0
|
作者：
Sirci, Stefano [1 ]
Gentilit, Fabrizio [2 ]
Martinez, Jorge D. [3 ]
Boria, Vicente E. [1 ]
Sorrentino, Roberto [4 ]
机构：
[1] Univ Politecn Valencia, ITEAM, E-46022 Valencia, Spain
[2] Graz Univ Technol, IHF, A-8010 Graz, Austria
[3] Univ Politecn Valencia, I3M, E-46022 Valencia, Spain
[4] Univ Perugia, DI Dept Engn, I-06125 Perugia, Italy
来源：
2015 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) | 2015年
关键词：
Cross coupling; electric and magnetic mixed coupling; quasi-elliptic filter; substrate integrated waveguide;
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
In this paper, a novel electric coupling for Substrate Integrated Waveguide (SIW) bandpass filter is proposed, designed and applied in combline SIW structure. The electric coupling is obtained by means of an open-ended coplanar transmission line which couples comb line SIW resonators. The proposed coupling structure can introduce mixed electric and magnetic coupling thus helping to enhance the filter selectivity. To prove the concept, a quasi-elliptic cross-coupled 4-pole SIW filter is designed including transmission zeros (TZs) at both sides of the pass-band. The filter is centred at 5.75 GHz with absolute bandwidth of 114 MHz (2%). The TZs are set at 5.63 GHz and 5.87 GHz. The measured results confirm the performances of the proposed structure, showing the advantages of wider upper stop-band, higher compactness and easy integration with planar structures.
引用
收藏
页数：4
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