Asymmetric transversal patch loaded microstrip line based 1-D periodic structure with flexible selection of stopband resonance

Shahid, I; Thalakotuna, DN; Karmokar, DK; Heimlich, M

Asymmetric transversal patch loaded microstrip line based 1-D periodic structure with flexible selection of stopband resonance

Shahid, I Thalakotuna, DN Karmokar, DK Heimlich, M

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Publisher:: ELSEVIER GMBH
Publication Type:: Journal Article
Citation:: AEU - International Journal of Electronics and Communications, 2020, 114
Issue Date:: 2020-02-01

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Field	Value	Language
dc.contributor.author	Shahid, I
dc.contributor.author	Thalakotuna, DN
dc.contributor.author	Karmokar, DK
dc.contributor.author	Heimlich, M
dc.date.accessioned	2020-11-01T19:41:56Z
dc.date.available	2020-11-01T19:41:56Z
dc.date.issued	2020-02-01
dc.identifier.citation	AEU - International Journal of Electronics and Communications, 2020, 114
dc.identifier.issn	1434-8411
dc.identifier.issn	1618-0399
dc.identifier.uri	http://hdl.handle.net/10453/143667
dc.description.abstract	© 2019 Elsevier GmbH A reactively loaded microstrip line based 1-D periodic structure is discussed. An off-centered via configuration is introduced to the conventional center-shorted square patch mushroom type electromagnetic bandgap (EBG) structures. In this work, a rectangular transversal patch is used to load a longitudinal microstrip line reactively. Reactive loading is varied by changing the via position away from the patch center while keeping all other structure parameters constant. This asymmetric loading causes the structure to exhibit EBG characteristics at much lower frequency with the same structure dimensions when compared to conventional centered via setup. Propagating modes are investigated using eigenmode dispersion analysis for different via positions. An equivalent circuit model of the proposed unit cell is developed. Transmission matrix (ABCD) based phase constant calculations for the circuit model agrees with the dispersion analysis results. Finally, experimental results confirm that the proposed asymmetric configuration allows the structure to lower the bandgap resonance by 28.6% with negligible impact on other performance attributes of the structure. Using the proposed configuration, compact filter structures can be designed where the stopband resonance can be flexibly placed in the band of interest within a wide frequency range, by optimizing the via position.
dc.language	English
dc.publisher	ELSEVIER GMBH
dc.relation.ispartof	AEU - International Journal of Electronics and Communications
dc.relation.isbasedon	10.1016/j.aeue.2019.153010
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	Networking & Telecommunications
dc.title	Asymmetric transversal patch loaded microstrip line based 1-D periodic structure with flexible selection of stopband resonance
dc.type	Journal Article
utslib.citation.volume	114
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-11-01T19:41:50Z
pubs.publication-status	Published
pubs.volume	114

Abstract:

© 2019 Elsevier GmbH A reactively loaded microstrip line based 1-D periodic structure is discussed. An off-centered via configuration is introduced to the conventional center-shorted square patch mushroom type electromagnetic bandgap (EBG) structures. In this work, a rectangular transversal patch is used to load a longitudinal microstrip line reactively. Reactive loading is varied by changing the via position away from the patch center while keeping all other structure parameters constant. This asymmetric loading causes the structure to exhibit EBG characteristics at much lower frequency with the same structure dimensions when compared to conventional centered via setup. Propagating modes are investigated using eigenmode dispersion analysis for different via positions. An equivalent circuit model of the proposed unit cell is developed. Transmission matrix (ABCD) based phase constant calculations for the circuit model agrees with the dispersion analysis results. Finally, experimental results confirm that the proposed asymmetric configuration allows the structure to lower the bandgap resonance by 28.6% with negligible impact on other performance attributes of the structure. Using the proposed configuration, compact filter structures can be designed where the stopband resonance can be flexibly placed in the band of interest within a wide frequency range, by optimizing the via position.

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http://hdl.handle.net/10453/143667