Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies

In this article, we present a magnetically–tunable quad–band filter with high tunability in the frequency range of 2.1–3.9 GHz. A multi–band filter with four stop–bands comprises of a microstrip line coupled to four frequency–selective split–ring resonators (SRRs). We achieve tuning of individual fr...

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Autores principales: Asci, Cihan, Sadeqi, Aydin, Wang, Wei, Rezaei Nejad, Hojatollah, Sonkusale, Sameer
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6978304/
https://www.ncbi.nlm.nih.gov/pubmed/31974467
http://dx.doi.org/10.1038/s41598-020-57773-6
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author Asci, Cihan
Sadeqi, Aydin
Wang, Wei
Rezaei Nejad, Hojatollah
Sonkusale, Sameer
author_facet Asci, Cihan
Sadeqi, Aydin
Wang, Wei
Rezaei Nejad, Hojatollah
Sonkusale, Sameer
author_sort Asci, Cihan
collection PubMed
description In this article, we present a magnetically–tunable quad–band filter with high tunability in the frequency range of 2.1–3.9 GHz. A multi–band filter with four stop–bands comprises of a microstrip line coupled to four frequency–selective split–ring resonators (SRRs). We achieve tuning of individual frequency bands using magnetic reed switches connected in between the capacitive gaps of each split–ring resonator. Application of magnetic field tunes this capacitance affecting its resonance frequency. The measured reflection spectrum of the proposed device matches well with the simulation results. The results show more than 25% tunability for each of the four bands with bandwidth values in the range of 30–70 MHz with over 100% overall tunability in the 2.1–3.9 GHz frequency spectrum.
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spelling pubmed-69783042020-01-29 Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies Asci, Cihan Sadeqi, Aydin Wang, Wei Rezaei Nejad, Hojatollah Sonkusale, Sameer Sci Rep Article In this article, we present a magnetically–tunable quad–band filter with high tunability in the frequency range of 2.1–3.9 GHz. A multi–band filter with four stop–bands comprises of a microstrip line coupled to four frequency–selective split–ring resonators (SRRs). We achieve tuning of individual frequency bands using magnetic reed switches connected in between the capacitive gaps of each split–ring resonator. Application of magnetic field tunes this capacitance affecting its resonance frequency. The measured reflection spectrum of the proposed device matches well with the simulation results. The results show more than 25% tunability for each of the four bands with bandwidth values in the range of 30–70 MHz with over 100% overall tunability in the 2.1–3.9 GHz frequency spectrum. Nature Publishing Group UK 2020-01-23 /pmc/articles/PMC6978304/ /pubmed/31974467 http://dx.doi.org/10.1038/s41598-020-57773-6 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Asci, Cihan
Sadeqi, Aydin
Wang, Wei
Rezaei Nejad, Hojatollah
Sonkusale, Sameer
Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
title Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
title_full Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
title_fullStr Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
title_full_unstemmed Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
title_short Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
title_sort design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6978304/
https://www.ncbi.nlm.nih.gov/pubmed/31974467
http://dx.doi.org/10.1038/s41598-020-57773-6
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