Analytic model for ultrasound energy receivers and their optimal electric loads

In this paper, we present an analytic model for thickness resonating plate ultrasound energy receivers, which we have derived from the piezoelectric and the wave equations and, in which we have included dielectric, viscosity and acoustic attenuation losses. Afterwards, we explore the optimal electri...

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Bibliographic Details
Published inSmart materials and structures Vol. 26; no. 8; pp. 85003 - 85015
Main Authors Gorostiaga, M, Wapler, M C, Wallrabe, U
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2017
Subjects
energy harvesting
optimal electric load
piezoelectric transducer
ultrasound
wireless power transfer
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Summary:In this paper, we present an analytic model for thickness resonating plate ultrasound energy receivers, which we have derived from the piezoelectric and the wave equations and, in which we have included dielectric, viscosity and acoustic attenuation losses. Afterwards, we explore the optimal electric load predictions by the zero reflection and power maximization approaches present in the literature with different acoustic boundary conditions, and discuss their limitations. To validate our model, we compared our expressions with the KLM model solved numerically with very good agreement. Finally, we discuss the differences between the zero reflection and power maximization optimal electric loads, which start to differ as losses in the receiver increase.
Bibliography:SMS-104483.R1
ISSN:0964-1726
1361-665X
DOI:10.1088/1361-665X/aa61ea