Improving the pass-band return loss in liquid crystal dual-mode bandpass filters by microstrip patch reshaping

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Show simple item record Torrecilla Rosell, Javier Urruchi del Pozo, Virginia Sánchez Pena, José Manuel Bennis, Noureddine García Lampérez, Alejandro Segovia Vargas, Daniel 2019-01-21T10:36:45Z 2019-01-21T10:36:45Z 2014-06-13
dc.identifier.bibliographicCitation Torrecilla, J., Urruchi, V., Sánchez-Pena, J.M., Bennis, N., García, A., Segovia, D. (2014). Improving the Pass-Band Return Loss in Liquid Crystal Dual-Mode Bandpass Filters by Microstrip Patch Reshaping. Materials, 7 (6), pp. 4524-4535
dc.identifier.issn 1996-1944
dc.description.abstract In this paper, the design and experimental characterization of a tunable microstrip bandpass filter based on liquid crystal technology are presented. A reshaped microstrip dual-mode filter structure has been used in order to improve the device performance. Specifically, the aim is to increase the pass-band return loss of the filter by narrowing the filter bandwidth. Simulations confirm the improvement of using this new structure, achieving a pass-band return loss increase of 1.5 dB at least. Because of the anisotropic properties of LC molecules, a filter central frequency shift from 4.688 GHz to 5.045 GHz, which means a relative tuning range of 7.3%, is measured when an external AC voltage from 0 Vrms to 15 Vrms is applied to the device. © 2014 by the authors.
dc.description.sponsorship Authors acknowledge Grupo de Fotónica Aplicada (Universidad Politécnica de Madrid, Spain) for the use of their facilities for the manufacture of the device. Authors thank funding support from the Spanish Ministerio de Economía y Competitividad (grant No. TEC2009-13991-C02-01) and Comunidad de Madrid (grant No. FACTOTEM2 S2009/ESP/1781).
dc.format.extent 14
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher MDPI
dc.rights © 2014 by the authors; licensee MDPI, Basel, Switzerland.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Dual-mode filters
dc.subject.other Inverted-microstrip structure
dc.subject.other Liquid crystals
dc.subject.other Microwave frequencies
dc.subject.other Tunable devices
dc.subject.other Microstrip filters
dc.subject.other Anisotropic property
dc.subject.other Device performance
dc.subject.other Dual-mode bandpass filter
dc.subject.other Dual-mode filter
dc.subject.other Experimental characterization
dc.subject.other Liquid crystal technology
dc.subject.other Microstrip band-pass filter
dc.subject.other Bandpass filters
dc.title Improving the pass-band return loss in liquid crystal dual-mode bandpass filters by microstrip patch reshaping
dc.type article
dc.subject.eciencia Electrónica
dc.subject.eciencia Ingeniería Industrial
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2009-13991-C02-01
dc.relation.projectID Comunidad de Madrid. S2009/ESP-1781/FACTOTEM2
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 4524
dc.identifier.publicationissue 6
dc.identifier.publicationlastpage 4535
dc.identifier.publicationtitle Materials
dc.identifier.publicationvolume 7
dc.identifier.uxxi AR/0000015385
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