Ferroelectric thin film acoustic devices with electrical multiband switching ability

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Title: Ferroelectric thin film acoustic devices with electrical multiband switching ability
Authors: Ptashnik, SV
Mikhailov, AK
Yastrebov, AV
Petrov, PK
Liu, W
Alford, N
Hirsch, S
Kozyrev, AB
Item Type: Journal Article
Abstract: Design principles of a new class of microwave thin film bulk acoustic resonators with multiband resonance frequency switching ability are presented. The theory of the excitation of acoustic eigenmodes in multilayer ferroelectric structures is considered, and the principle of selectivity for resonator with an arbitrary number of ferroelectric layers is formulated. A so called “criterion function” is suggested that allows to determine the conditions for effective excitation at one selected resonance mode with suppression of other modes. The proposed theoretical approach is verifiedusing thepreexisting experimental data published elsewhere. Finally, the possible application of the two ferroelectric layers structures for switchable microwave overtone resonators, binary and quadrature phase-shift keying modulators are discussed. These devices could play a pivotal role in the miniaturization of microwave front-end antenna circuits.
Issue Date: 10-Nov-2017
Date of Acceptance: 11-Sep-2017
URI: http://hdl.handle.net/10044/1/50763
DOI: https://dx.doi.org/10.1038/s41598-017-14895-8
ISSN: 2045-2322
Publisher: Nature Publishing Group
Journal / Book Title: Scientific Reports
Volume: 7
Copyright Statement: 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. Te 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/. © The Author(s) 2017
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/G060940/1
N/A
EP/M013812/1
Publication Status: Published
Article Number: 15289
Appears in Collections:Faculty of Engineering
Materials
Faculty of Natural Sciences



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