NDLI: Strontium titanate DC electric field switchable and tunable bulk acoustic wave solidly mounted resonator

Content Provider	IEEE Xplore Digital Library
Author	Saddik, George N. Boesch, Damien S. Stemmer, Susanne York, Robert A.
Copyright Year	2008
Description	Author affiliation: Department of Electrical and Computer Engineering, University of California Santa Barbara, 93106, USA (Saddik, George N.; York, Robert A.) \|\| Materials Department University of California Santa Barbara, 93106, USA (Boesch, Damien S.; Stemmer, Susanne)
Abstract	A voltage switchable/tunable strontium titanate solidly mounted BAW resonator was implemented using an acoustical Bragg reflector of alternating high and low acoustic impedance layers. In the absence of any bias the device is merely capacitive, but under a DC bias the material becomes piezoelectrically active, leading to a BAW resonance that is effectively turned on and off by the applied field. In the resonant state a voltage-dependent frequency trimming of 1 % is observed, from 7.05 GHz to 6.98 GHz with an applied bias of 0–9 V, respectively. The quality factor at the resonant frequency was approximately 100, limited by the simplicity of the device design. The Q was relatively constant with applied bias, with an effective electromechanical coupling coefficient that varied linearly with applied bias up to a maximum of 3.3 %.
Starting Page	1263
Ending Page	1266
File Size	3803811
Page Count	4
File Format	PDF
ISBN	9781424417803
ISSN	0149645X
DOI	10.1109/MWSYM.2008.4633289
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resonant frequency Acoustics Microwave filters Electrodes Couplings Switches Q-factor ferroelectric films piezoelectric resonators Acoustic resonators bulk acoustic wave devices delay filters
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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