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Miniaturized Dual Bandstop Filter using CRLH Transmission Line

Communications on Applied Electronics • 2016
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Publication Information
Authors Samar Refaat, Amr A. Al-Awamry, A. A. Mitkees
Keywords Composite Right and Left-Handed Transmission-line (CRLH-TL), Dual band filter, Metamaterials, Spiral interdigital capacitor, Stub inductors.
Journal Communications on Applied Electronics
Publisher Foundation of Computer Science (FCS), NY, USA
Volume 5
Issue 5
Pages 24-28
publication.type International
Paper Link Open Link
Supplementary Materials Not Available
Abstract
Design of a dual wide bandstop filter is proposed based on Composite Right and Left-Handed Transmission-line (CRLH-TL) . Two stop bands with center frequencies of 8.3 GHz and 12.9 GHz are achieved with fractional bandwidths 57.8% and 32.5% respectively. Spiral interdigital capacitors and stub inductors are employed to designed filter. The proposed bandstop filter provides low passband insertion loss, better attenuation in stopbands, and low cost. The total filter size is about 7.8mm×15.1mm which is very compact compared to other metamaterial and conventional microstrip filters. Filter is also fabricated and measured to demonstrate the performance matched with simulation results.