Calculation of dissipation resistances in a single-element transducer

Autor:	Marc Lethiecq, G. Feuillard, V. Loyau, L. P. Tran Huu Hue
Rok vydání:	2007
Předmět:	Engineering Resistive touchscreen Acoustics and Ultrasonics business.industry Acoustics Input impedance Dissipation Transducer Computer Science::Sound Dielectric loss Acoustic radiation Electrical and Electronic Engineering business Instrumentation Electrical impedance Radiation resistance
Zdroj:	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 54:2385-2393
ISSN:	1525-8955 0885-3010
Popis:	In this paper, a new formulation of the electrical input impedance of a single element transducer is presented. The resistive part of the electrical impedance that takes into account acoustic radiation in the front medium and losses in the transducer is split into a radiation resistance on one hand and into dissipation resistances related to each transducer component on the other hand. To confirm these theoretical results, characterization methods based on temperature measurements and pulse-echo response are presented. Measurements have been conducted on 1 MHz transducers, which consist of a piezoelectric ceramic glued on a backing. The results show a good agreement between experience and theory for dissipation resistance and radiation resistance values, which confirms the theoretical approach.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e90e862f88537a2280cad35de0fef87 https://doi.org/10.1109/tuffc.2007.543 Zobrazit plný text záznamu