Passive transponders using acoustic surface wave devices

Details Passive transponders using acoustic surface wave devices Passive transponders using acoustic surface wave devices

1975-10-06

1977-11-22

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

333 30R, G01S 956

Patent

active

040598314

ABSTRACT:
A passive transponder sensitive to electromagnetic pulses received in the form of surface acoustic waves. The device utilizes a plurality of interdigital transponders each consisting of a metallic deposit on a piezoelectric substrate and serving as an electrode. Transponder deactivation and energy interruption means provide programability and coding.

REFERENCES:
patent: 3169242 (1965-02-01), Davis et al.
patent: 3609416 (1971-09-01), Epstein
patent: 3706094 (1972-12-01), Cole et al.
patent: 3946342 (1976-03-01), Hartmann

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