A MILLIMETER SCALE PIEZOELECTRIC RECEIVER WITH SUB-MILLIWATT OUTPUT FOR ULTRASONIC WIRELESS POWER TRANSFER IN WATER

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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Detail(s)

Original languageEnglish
Title of host publication2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)
PublisherInstitute of Electrical and Electronics Engineers, Inc.
Pages561-564
ISBN (electronic)978-0-7381-2562-6, 978-1-6654-1267-4
ISBN (print)978-1-6654-4845-1
Publication statusPublished - 2021

Publication series

NameInternational Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS
ISSN (Print)2167-0013
ISSN (electronic)2167-0021

Conference

Title21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers 2021)
LocationVirtual
PlaceUnited States
CityOrlando
Period20 - 25 June 2021

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85114964105&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(3632492b-0822-491d-92db-2ab8ad5aa32f).html

Abstract

We here investigate the power conversion efficiency (PCE) of a millimeter scale piezoelectric receiver (PZT-5H) characterized in water for the first time for ultrasonic wireless power transfer (UWPT). This study targets WPT applications where the energy harvester must fit within a is tightly constrained space located far from the source (very large depth to aperture ratio) such as in the case for deep biomedical implants. Measurements were carried in water, at a depth of 50 mm (depth to aperture ratio of 50:1), to mimic the dielectric property of soft tissues more closely. Without impedance matching, the receiver can harvest 0.66 mW (3 kΩ terminal load) from an acoustic source intensity of 7.2 mW/mm2 (close to the FDA limit for diagnostic ultrasound). We show that with adaptive transducer to load matching, an overall efficiency of 14% is attainable.

Research Area(s)

  • Energy harvesting, wireless power transfer, ultrasonic waves, high dielectric liquids, piezoelectric devices

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Publication fingerprints text

100
Millimeter-scale Keyphrases
100
Piezoelectric Recei... Keyphrases
100
Aperture Ratio Keyphrases
100
Ultrasonic Wireless... Keyphrases
100
Piezoelectricity Physics
100
Water Physics
100
Output Physics
100
Ultrasonics Physics
100
Wireless Power Tran... Physics
100
Piezoelectric Engineering
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Citation Format(s)

[ RIS ] [ BibTeX ]
A MILLIMETER SCALE PIEZOELECTRIC RECEIVER WITH SUB-MILLIWATT OUTPUT FOR ULTRASONIC WIRELESS POWER TRANSFER IN WATER. / Uddin, Md. Shihab; Lee, Joshua E.-Y.
2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers). Institute of Electrical and Electronics Engineers, Inc., 2021. p. 561-564 (International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review