A compact wideband bandpass filter using transversal resonator, and asymmetrical interdigital coupled lines

被引：74

作者：

Sun, Sheng ^{[1
]}

Zhu, Lei ^{[1
]}

Tan, Huei-Hsien ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 03期

关键词：

interdigital coupled lines; out-of-band performance; transversal filter; wideband bandpass filter (BPF);

D O I：

10.1109/LMWC.2008.916780

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 wideband microstrip bandpass filter using transversal resonator and asymmetrical interdigital coupled lines is proposed in this letter. A wide passband is first constructed using transversal signal-interference technique, resulting a pair of transmission zeros at each side of the desired passband. By driving this transversal resonator with two asymmetrical interdigital coupled lines at two sides, five extra transmission zeros are generated in the lower/upper stopbands with excellent dc-choked property, thus making up a wide passpand with improved out-of-band performance. This wideband microstrip filter is then designed, implemented and experimented. Good insertion/return losses, flat group delay and good out-of-band rejections are achieved as demonstrated in both simulation and experiment.

引用

页码：173 / 175

页数：3

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