NDLI: Energy Harvesting Transducer by Collecting Electromagnetic Energy Based on Ultrasonic Horn

Content Provider	IEEE Xplore Digital Library
Author	Ping Li Yumei Wen
Copyright Year	2006
Description	Author affiliation: Coll. of Opto-electron. Eng., Chongqing Univ. (Ping Li; Yumei Wen)
Abstract	This paper presents a new energy harvesting sensor by collecting electromagnetic energy based on SAW ultrasonic horn. A unidirectional transducer group and an inhomogeneous piezoelectric structure are created inside the transducer while propagating the unidirectionality required for low loss and receiving the convergent acoustic wave with higher power output. Because of using the ultrasonic horn structure, the acoustic waves may be converged by modifying the angle of the slope boundary and the wavelength of the incident wave. Almost all energy in a wave period is converged and gathered in a flash. Therefore the peak power output in receiving IDT may be much larger than that in input UDT. The electromagnetic energy collected from antenna can be gathered and accumulated ceaselessly, then burst in short time, thus the sensor can be deployed in longer distance than that of ordinary passive SAW sensors
Starting Page	550
Ending Page	555
File Size	1547875
Page Count	6
File Format	PDF
ISBN	1424405289
DOI	10.1109/ICIA.2006.305772
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic transducers Electromagnetic Energy Acoustic propagation SAW Self-powered Ultrasonic transducers Piezoelectric transducers Surface acoustic waves Acoustic sensors Propagation losses Electromagnetic propagation Energy Harvesting Acoustic waves Wavelength conversion Ultrasonic Horn
Content Type	Text
Resource Type	Article

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