The design of efficient broadband wedge transducers
作者:
J. Fraser,
B. T. Khuri‐Yakub,
G. S. Kino,
期刊:
Applied Physics Letters
(AIP Available online 1978)
卷期:
Volume 32,
issue 11
页码: 698-700
ISSN:0003-6951
年代: 1978
DOI:10.1063/1.89911
出版商: AIP
数据来源: AIP
摘要:
A simple coupled‐mode theory has been developed for acoustic‐surface‐wave wedge transducers. Surface‐wave transducers have been fabricated to operate on aluminum using water as the wedge material. The measured efficiency was 68% at 2.75 MHz, the theoretical value being 81%. Transducers have also been fabricated to operate on glass with a rubbery solid, RTV 615, as the wedge material. The experimental and theoretical efficiencies of this transducer at 3.2 MHz were 35 and 50%, respectively. The surface‐wave leakage coefficient of RTV 615 on glass has been measured and found to be in excellent agreement with theory.
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