Parallel-coupled coplanar-waveguide bandpass filter with multiple transmission zeros

被引：4
|
作者：
Wu, Chao-Huang [1 ]
Wang, Chi-Hsueh
Lin, Yo-Shen
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
[3] Natl Cent Univ, Dept Elect Engn, Chungli 320, Taiwan
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2007年 / 17卷 / 02期
关键词：
bandpass filter (BPF); coplanar waveguide (CPW); coupled lines;
D O I：
10.1109/LMWC.2006.890334
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 compact parallel-coupled coplanar-waveguide bandpass filter with good selectivity and stopband response is proposed. By using the quarter-wavelength resonators in implementation, the filter size can be reduced and no spurious passband is observed at twice the center frequency (2f(0)). In addition, by suitably introducing the capacitive and inductive cross-coupling effects, four transmission zeros around the passband edges may be created for improving the filter selectivity. For design purpose, the equivalent-circuit models are also established. In this study, the compact fourth-order filter with multiple transmission zeros for improving the selectivity is implemented, and its stopband is extended up to 3.43f(0) with a rejection better than -30 dB.
引用
收藏
页码：118 / 120
页数：3
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