Recent developments in SAW devices

journal article
Published by Institution of Engineering and Technology (IET) in IEE Proceedings A Physical Science, Measurement and Instrumentation, Management and Education, Reviews

Vol. 131 (4) , 186-215
https://doi.org/10.1049/ip-a-1.1984.0033

Abstract

Surface-acoustic-wave (SAW) delay lines employing photolithographically fabricated transducers were first described in 1965. Since then there has been a continuous stream of publications on the physics of SAW propagation, and on the applications of these planar acoustic elements as high-frequency electrical components. By 1975 the principles of many potentially useful SAW devices had been described, and the first dispersive delay lines were being employed in pulse compression radar. In the paper the advances made in more recent years are reviewed, which have seen the development of numerous SAW devices for military and civil applications, and the realisation of their mass-production capability in the TV IF filter. The paper also describes the latest trends towards smaller and cheaper devices, lower insertion losses and more sophisticated performance, which will be the hallmarks of future generations of SAW devices.

Keywords

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