Elastic surface wave transmitting device for eliminating...

Details Elastic surface wave transmitting device for eliminating... Elastic surface wave transmitting device for eliminating...

H - Electricity

03

H

333/79

H03H 7/01 (2006.01) H03H 9/02 (2006.01)

Patent

CA 1070784

ABSTRACT OF THE DISCLOSURE: An elastic surface wave transmitting device comprising a piezo-electric substrate S1 on which is arranged a transmitting transducer TE placed at the centre of the sub- strate S1, and two receiving transducers TR1 and TR2 arranged on either side of the transmitting transducer TE, means (a metallic water P1, for example deposited by evaporation on to the substrate Sl) enabling the waves transmitted by the trans- mitting transducer TE towards each of the receiving transducers TR1 and TR2 to be phase-shifted so that the waves O1 and O2 respectively reflected by these receiving transducers TR1 and TR2 cancel one another out at the transmitting transducer TE.

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