DESIGN OF COMPACT COPLANAR BANDSTOP FILTER COMPOSED ON OPEN-LOOP-RING RESONATOR AND DEFECTED GROUND STRUCTURE (DGS)

被引：4

作者：

Batmanov, Anatoliy ^{[1
]}

Boutejdar, Ahmed ^{[2
]}

Omar, Abbas ^{[2
]}

Burte, Edmund ^{[1
]}

机构：

[1] Univ Magdeburg, Chair Semicond Technol, D-39106 Magdeburg, Germany

[2] Univ Magdeburg, Chair Microwave & Commun Engn, D-39106 Magdeburg, Germany

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2010年 / 52卷 / 02期

关键词：

bandstop filter (BSF); open-loop-ring resonator; defected ground structure (DGS); CPW; microstrip filter;

D O I：

10.1002/mop.24905

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：

Design of a novel compact bandstop filter composed on an open-loop-ring resonator and a defected ground structure (DGS) for coplanar waveguide is proposed and investigated. A simple coplanar open-loop-ring resonator has been designed and tested for the stop-band front 3.9 to 4.3 GHz with tree transmission zeroes inside the stop-band. Two almost symmetrical poles are obtained on both sides of the stop-band. Then the proposed broad band bandstop filter based on the one open-loop-ring resonator has been transformed to the bandstop filter with a narrower stop-band but with improved pass- and stop-band characteristics. It is realized by adding a conventional rectangular DGS slot inside the open-loop-ring. The equivalent circuit model has been proposed to describe the behaviour of the bandstop filters. The improved bandstop filter introduces the stop-band from 3.75 to 5.3 GHz with two transmission zeroes within and more than -20 dB rejection. The total size of the proposed structure is 13.8 x 13.4 mm(2). Both bandstop filters have been fabricated and measured. Measurements are in good agreement with simulation results. (C) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 478-483, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24905

引用

页码：478 / 483

页数：6

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