Compact bandpass filters based on dual-plane microstrip/coplanar-waveguide structure with quarter-wavelength resonators

被引：16

作者：

Kuo, Tsung-Nan ^{[1
]}

Lin, Shih-Cheng

Wang, Chi-Hsueh

Chen, Chun Hsiung

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 106, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2007年 / 17卷 / 03期

关键词：

bandpass filter (BPF); coplanar waveguide (CPW); cross coupling; microstrip; quarter-wavelength stepped-impedance resonator;

D O I：

10.1109/LMWC.2006.890460

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：

Compact wideband bandpass filters are proposed based on the dual-metal-plane structure consisting of both microstrip and coplanar-waveguide (CPW) quarter-wavelength resonators. By combining the advantages of dual-plane microstrip/CPW structure and stepped-impedance resonators, strong couplings between resonators may be accomplished so that the fourth-order cross-coupled filter with compact size and wide bandwidth may be realized. To further improve the selectivity, the sixth-order cross-coupled filter composed of four microstrip and two CPW resonators is implemented. Specifically, the implemented filters have the merits of compact size, good insertion/return losses, wide fractional bandwidth, and better selectivity. Good agreement between simulated and measured responses of these filters is demonstrated.

引用

页码：178 / 180

页数：3

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