Compact Wideband Bandstop Filter With Four Transmission Zeros

被引：74

作者：

Sanchez-Soriano, Miguel A. ^{[1
]}

Torregrosa-Penalva, German ^{[1
]}

Bronchalo, Enrique ^{[1
]}

机构：

[1] Miguel Hernandez Univ Elche, Signal Theory & Commun Div, Alicante 03202, Spain

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2010年 / 20卷 / 06期

关键词：

Coupled line; microstrip filters; transmission zero; wideband bandstop filters; SHARP-REJECTION;

D O I：

10.1109/LMWC.2010.2047468

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：

This work presents a new type of compact wideband bandstop filter (BSF) with four transmission zeros in the stopband. The proposed filter topology consists of a coupled line directional coupler connected in parallel to an interference transmission line. The filter characteristics can be easily controlled by the coupling factor of the coupled line coupler and the characteristic admittances of both the coupler and the transmission line. Design equations and curves are provided for the filter design. To validate the proposed topology, a compact microstrip BSF centered at 2.0 GHz with a measured 20 dB rejection bandwidth of 100% and sharp rejection characteristics is designed and built.

引用

页码：313 / 315

页数：3

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