Article | REF: E2000 V1

Acoustic components used for filtration - Overview of the different technologies

Authors: William STEICHEN, Sylvain BALLANDRAS

Publication date: February 10, 2008

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3. Surface wave filters (SAW)

3.1 A brief history of surface wave devices

The history of surface wave devices began in 1965 with the invention of the interdigital quartz comb by White and Voltmer [1] . The study of surface waves dates back to 1885, when Lord Rayleigh [2] was interested in earthquakes.

The first applications of SAW devices were reserved for the military and professional sectors. The products were delay lines, dispersive delay lines for radar applications, convoluters... The first consumer applications were band filters for TV sets and radio sets receiving FM broadcasts (FM – 1976 Murata). These are still...

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Surface wave filters (SAW)