Novel patch-via-spiral resonators for the development of miniaturized bandpass filters with transmission zeros

被引：29

作者：

Lin, Shih-Cheng ^{[1
]}

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 TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2007年 / 55卷 / 01期

关键词：

coplanar waveguide (CPW); coupled-resonator bandpass filter; dual-metal-plane structure; microstrip; miniaturization; transmission zero;

D O I：

10.1109/TMTT.2006.888579

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 patch-via-spiral resonator based on the dual-metal-plane configuration is proposed and examined. With the microstrip patch on the top plane serving as a capacitor and linking to the quasi-lumped spiral inductor on the bottom plane through a connecting via, the proposed dual-plane resonator structure located on the opposite sides of the single substrate may form a miniaturized one in the printed-circuit board fabrication. By suitably combining the proposed patch-via-spiral resonators, useful coupled-resonator pairs may be constructed to simultaneously provide electric and magnetic couplings. Based on these coupled-resonator pairs, a second-order bandpass filter with multiple transmission zeros is realized without requiring either the cross-coupled path or the source-load coupling. For design purpose, the equivalent-circuit model is also derived and verified. In this study, a fourth-order patch-via-spiral bandpass filter with both good passband selectivity and miniaturized size of only 22.14 mm x 5.08 mm (i.e., 0.188 lambda(g0) x 0.043 lambda(g0)) is implemented, where Ago denotes the guided wavelength of the 50-Omega microstrip line at center frequency.

引用

页码：137 / 146

页数：10

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