DocumentCode
878441
Title
Current distribution and input impedance of a finite electromagnetic acoustic transducer
Author
Hussein, Ali M.
Author_Institution
Dept. of Electr. Eng., Ryerson Polytech. Inst., Toronto, Ont., Canada
Volume
27
Issue
5
fYear
1991
fDate
9/1/1991 12:00:00 AM
Firstpage
4258
Lastpage
4261
Abstract
A rigorous solution for the current distribution in an electromagnetic acoustic transducer (EMAT), with a finite array of conductors, above a half conducting space is obtained using the method of moments. The input impedance of the EMAT is determined by calculating the complex inductance of the transducer´s array of conductors. The case of the meander line EMAT is considered. The dependence of current distribution and impedance on the size of the EMAT and its distance from the conducting surface is studied.
Keywords
acoustoelectric transducers; current distribution; electric impedance; electromagnetic induction; ultrasonic transducers; complex inductance; conducting surface; current distribution; finite electromagnetic acoustic transducer; half conducting space; input impedance; meander line EMAT; method of moments; ultrasonic transducer; Acoustic transducers; Coils; Conducting materials; Conductors; Current distribution; Magnetic fields; Moment methods; Strips; Surface impedance; Surface waves;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.105042
Filename
105042
Link To Document