A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection

This paper presents a compact C-band bandpass filter with improved out-of-band rejection. It consists of a symmetric three-pole parallel coupled line microstrip loaded with complementary split ring resonators (CSRRs) and slot resonators. Enhancements regarding the filter responses are obtained by et...

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Main Authors: B. Ait Ahmed, A. Naghar, O. Aghzout, A. Vazquez Alejos, F. Falcone
Format: Article
Language:English
Published: Advanced Electromagnetics 2020-03-01
Series:Advanced Electromagnetics
Subjects:
Online Access:https://aemjournal.org/index.php/AEM/article/view/1323
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author B. Ait Ahmed
A. Naghar
O. Aghzout
A. Vazquez Alejos
F. Falcone
author_facet B. Ait Ahmed
A. Naghar
O. Aghzout
A. Vazquez Alejos
F. Falcone
author_sort B. Ait Ahmed
collection DOAJ
description This paper presents a compact C-band bandpass filter with improved out-of-band rejection. It consists of a symmetric three-pole parallel coupled line microstrip loaded with complementary split ring resonators (CSRRs) and slot resonators. Enhancements regarding the filter responses are obtained by etching these two parasitic shapes successively. When, CSRRs are introduced in the ground plane, exactly in the back of the transmission line of 50 -Ohms , improvements on the filter selectivity level are achieved. Whereas, the slot resonator elements are implemented on the feed line to permit the suppression of the second harmonics. To reduce the second harmonics of 11:1-13GHz, the parasitic elements are both combined, widen the filter rejection of 5:81%. The surface current distribution together with the equivalent circuit are also studied in order to demonstrate the slots and the CSRRs effect parameters on the behavior of the proposed filter. A prototype of the optimal filter is fabricated and measured.Theory and experiment results prove the validity of the new design procedure.
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spelling doaj.art-b7bea973486247e4b384943dcb94c1a52022-12-22T03:06:22ZengAdvanced ElectromagneticsAdvanced Electromagnetics2119-02752020-03-019110.7716/aem.v9i1.1323A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band RejectionB. Ait Ahmed0A. Naghar1O. Aghzout2A. Vazquez Alejos3F. Falcone4University of Abdelmalek EssaadiRadio Frequency SystemsUniversity of Abdelmalek EssaadiUniversity of VigoPublic University of NavarraThis paper presents a compact C-band bandpass filter with improved out-of-band rejection. It consists of a symmetric three-pole parallel coupled line microstrip loaded with complementary split ring resonators (CSRRs) and slot resonators. Enhancements regarding the filter responses are obtained by etching these two parasitic shapes successively. When, CSRRs are introduced in the ground plane, exactly in the back of the transmission line of 50 -Ohms , improvements on the filter selectivity level are achieved. Whereas, the slot resonator elements are implemented on the feed line to permit the suppression of the second harmonics. To reduce the second harmonics of 11:1-13GHz, the parasitic elements are both combined, widen the filter rejection of 5:81%. The surface current distribution together with the equivalent circuit are also studied in order to demonstrate the slots and the CSRRs effect parameters on the behavior of the proposed filter. A prototype of the optimal filter is fabricated and measured.Theory and experiment results prove the validity of the new design procedure.https://aemjournal.org/index.php/AEM/article/view/1323Bandpass filterspurious suppressionC-bandCSRRs/Slots
spellingShingle B. Ait Ahmed
A. Naghar
O. Aghzout
A. Vazquez Alejos
F. Falcone
A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection
Advanced Electromagnetics
Bandpass filter
spurious suppression
C-band
CSRRs/Slots
title A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection
title_full A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection
title_fullStr A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection
title_full_unstemmed A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection
title_short A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection
title_sort compact wide bandpass filter for satellite communications with improved out of band rejection
topic Bandpass filter
spurious suppression
C-band
CSRRs/Slots
url https://aemjournal.org/index.php/AEM/article/view/1323
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