H - Electricity – 03 – H
Patent
H - Electricity
03
H
349/48
H03H 9/72 (2006.01) G01S 13/75 (2006.01) G01S 13/82 (2006.01) G06K 7/10 (2006.01) G07C 9/00 (2006.01) G10K 11/36 (2006.01) H03H 9/145 (2006.01) H03H 9/42 (2006.01) G01S 13/34 (2006.01)
Patent
CA 1228911
ABSTRACT OF THE DISCLOSURE A passive transponder for use in an interrogation/transponder system comprises a sub- strate having a substrate surface defining a path of travel for surface acoustic waves; at least one transducer element arranged on the surface for con- verting between electrical energy and surface acoustic wave energy which propagates along the path of travel; and a circuit, connected to the transducer element(s), for supplying interrogating signals to the trans- ducer element(s) and for receiving reply signals therefrom. In order to minimize insertion losses in the substrate, acoustic wave reflectors are provided to reflect the surface acoustic waves back towards the transducer element(s).
465010
Nysen Paul A.
Skeie Halvor
Smart & Biggar
X-Cyte Inc.
LandOfFree
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