Transponder arrangement

Details Transponder arrangement Transponder arrangement

1994-06-22

1995-09-19

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Radar transponder system

Radar transponder only

342 44, G15

Patent

active

054519594

ABSTRACT:
A transponder system comprises an interrogation unit for communicating with a plurality of responder units. At least one responder unit receives an interrogation signal from the interrogation unit and returns data as signal information to the interrogation unit in response to the reception of the interrogation signal. The responder unit also includes sensor circuitry sensitive to predetermined physical parameters in the environmental area of the responder unit and, via a data processor, generates data representative of the physical parameter and sends it back to the interrogator as signal information.

REFERENCES:
patent: 3911434 (1975-10-01), Cook
patent: 4364043 (1982-12-01), Cole et al.
patent: 4388524 (1983-06-01), Walton
patent: 4450431 (1984-05-01), Hochstein
patent: 4911217 (1990-03-01), Dunn et al.
patent: 5053774 (1991-10-01), Schuermann et al.
Wen et al., K. H., "Single Frequency RF Powered EGG Telemetry System", IEEE Transaction on Biomedical Engineering, vol. BME-26, No. 2, New York, Feb. 1979, pp. 105-109.

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