CURRENT DISTRIBUTION AND INPUT IMPEDANCE OF A FINITE ELECTROMAGNETIC ACOUSTIC TRANSDUCER

被引：15

作者：

HUSSEIN, AM

机构：

[1] Electrical Engineering Department, Ryerson Polytechnical Institute, Toronto, Ontario

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1109/20.105042

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 then determined by calculating the complex inductance of the transducer's array of conductors. The case of meander line EMATs is specifically considered. The dependence of current distribution and impedance on the size of the EMAT and its closeness from the conducting surface is studied.

引用

页码：4258 / 4261

页数：4

共 9 条

[1] EVALUATION OF THE INPUT ADMITTANCE OF SAW INTERDIGITAL TRANSDUCERS [J].

HUSSEIN, AM ;

RISTIC, VM .

JOURNAL OF APPLIED PHYSICS, 1979, 50 (07) :4794-4801

[2]

HUTCHINS DA, 1987, P IEEE ULTRASONICS S, P1037

[3]

MAXFIELD BW, 1987, MATER EVAL, V45, P1166

[4]

MURAYAMA R, 1989, P IEEE ULTRASONICS S, P1159

[5]

RISTIC VM, 1983, PRINCIPLES ACOUSTIC, pCH3

[6]

SETHARES JC, 1978, J APPL PHYS, V49, P1054, DOI 10.1063/1.325043

[7] PERIODIC SURFACE ACOUSTIC-WAVE ELECTROMAGNETIC TRANSDUCERS [J].

SZABO, TL ;

FROST, HM ;

SETHARES, JC .

IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, 1977, 24 (06) :393-406

[8]

Thompson R.B., 1990, PHYS ACOUST, V19, P157

[9]

Zaman A. J. M., 1982, Journal of Nondestructive Evaluation, V3, P37, DOI 10.1007/BF00566953

← 1 →