Comparison of the grating and meander‐line transducers for magnetoelastic surface‐wave excitation
作者:
William P. Robbins,
John Bowers,
期刊:
Journal of Applied Physics
(AIP Available online 1979)
卷期:
Volume 50,
issue 1
页码: 78-80
ISSN:0021-8979
年代: 1979
DOI:10.1063/1.325619
出版商: AIP
数据来源: AIP
摘要:
The grating transducer, the dual of the meander line, is studied and its performance compared with a meander line for the excitation of magnetoelastic surface waves. A LiNbO3‐YIG‐LiNbO3epoxy‐bonded composite is used to experimentally study both transducer geometries at 50 MHz. It is found that the grating transducer offers no significant improvement in performance over the meander line. Both types of transducers have large conversion losses because of large Ohmic resistance to radiation resistance ratios. Practical considerations of an allowable metalization thickness for the transducers and spatially nonuniform demagnetizing fields in the substrate permit only modest reductions in the conversion losses of either type of transducer situated on materials such as YIG.
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