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Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities

The article presents a novel circular substrate-integrated waveguide (SIW) bandpass filter (BPF) with controllable bandwidth. The proposed BPF was configured using two microstrip feed lines, semi-circular SIW cavities, capacitive slots, and inductive vias. The circular cavity was divided into two ha...

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Autores principales: Pradhan, Nrusingha Charan, Koziel, Slawomir, Barik, Rusan Kumar, Pietrenko-Dabrowska, Anna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10346926/
https://www.ncbi.nlm.nih.gov/pubmed/37448011
http://dx.doi.org/10.3390/s23136162
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author Pradhan, Nrusingha Charan
Koziel, Slawomir
Barik, Rusan Kumar
Pietrenko-Dabrowska, Anna
author_facet Pradhan, Nrusingha Charan
Koziel, Slawomir
Barik, Rusan Kumar
Pietrenko-Dabrowska, Anna
author_sort Pradhan, Nrusingha Charan
collection PubMed
description The article presents a novel circular substrate-integrated waveguide (SIW) bandpass filter (BPF) with controllable bandwidth. The proposed BPF was configured using two microstrip feed lines, semi-circular SIW cavities, capacitive slots, and inductive vias. The circular cavity was divided into two halves, and the two copies were cascaded. The resulting bisected and cascaded structures were then connected back-to-back. Finally, by introducing two inductive vias to the circular center cavity, a transmission zero was generated. In order to examine the design concept, a coupling matrix was generated. To demonstrate the theory, a third-order BPF was realized, fabricated, and experimentally validated. The BPF prototype features a wide passband of 8.7%, a low insertion loss of 1.1 dB, and a stopband of 1.5 [Formula: see text] with a rejection level better than 20 dB, which makes it a potential candidate for microwave sensing and communication industries.
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spelling pubmed-103469262023-07-15 Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities Pradhan, Nrusingha Charan Koziel, Slawomir Barik, Rusan Kumar Pietrenko-Dabrowska, Anna Sensors (Basel) Article The article presents a novel circular substrate-integrated waveguide (SIW) bandpass filter (BPF) with controllable bandwidth. The proposed BPF was configured using two microstrip feed lines, semi-circular SIW cavities, capacitive slots, and inductive vias. The circular cavity was divided into two halves, and the two copies were cascaded. The resulting bisected and cascaded structures were then connected back-to-back. Finally, by introducing two inductive vias to the circular center cavity, a transmission zero was generated. In order to examine the design concept, a coupling matrix was generated. To demonstrate the theory, a third-order BPF was realized, fabricated, and experimentally validated. The BPF prototype features a wide passband of 8.7%, a low insertion loss of 1.1 dB, and a stopband of 1.5 [Formula: see text] with a rejection level better than 20 dB, which makes it a potential candidate for microwave sensing and communication industries. MDPI 2023-07-05 /pmc/articles/PMC10346926/ /pubmed/37448011 http://dx.doi.org/10.3390/s23136162 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pradhan, Nrusingha Charan
Koziel, Slawomir
Barik, Rusan Kumar
Pietrenko-Dabrowska, Anna
Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities
title Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities
title_full Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities
title_fullStr Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities
title_full_unstemmed Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities
title_short Bandwidth-Controllable Third-Order Band Pass Filter Using Substrate-Integrated Full- and Semi-Circular Cavities
title_sort bandwidth-controllable third-order band pass filter using substrate-integrated full- and semi-circular cavities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10346926/
https://www.ncbi.nlm.nih.gov/pubmed/37448011
http://dx.doi.org/10.3390/s23136162
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AT kozielslawomir bandwidthcontrollablethirdorderbandpassfilterusingsubstrateintegratedfullandsemicircularcavities
AT barikrusankumar bandwidthcontrollablethirdorderbandpassfilterusingsubstrateintegratedfullandsemicircularcavities
AT pietrenkodabrowskaanna bandwidthcontrollablethirdorderbandpassfilterusingsubstrateintegratedfullandsemicircularcavities