Method of interrogating a plurality of transponders arranged in

Details Method of interrogating a plurality of transponders arranged in Method of interrogating a plurality of transponders arranged in

1992-04-29

1994-03-15

Sotomayor, John B.

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

Radar transponder system

Unique identity

342 51, G01S 1380

Patent

active

052949311

ABSTRACT:
A single interrogation device interrogates a plurality of transponders arranged within the range of transmission of the interrogation device and identifies them without any mutual interference.
The interference free operation is obtained by the interrogation device sequentially transmitting a plurality of RF interrogation pulses, separated from each other in time and whose energy changes from one pulse to the next one, to transponders which have an energy storage element and which respond to the interrogation pulses with an answer signal in dependence upon the condition that, at the end of each interrogation pulse, the charge voltage present at the energy storage element falls within a predetermined voltage range.

REFERENCES:
patent: 3745569 (1973-07-01), Works et al.
patent: 3816709 (1974-06-01), Walton
patent: 3914762 (1975-10-01), Klensch
patent: 4068232 (1978-01-01), Meyers et al.
patent: 4123754 (1978-10-01), Armstrong
patent: 4213129 (1980-07-01), Kennedy et al.
patent: 4345253 (1982-08-01), Hoover
patent: 4350982 (1982-09-01), Alpers
patent: 4724427 (1988-02-01), Carroll
patent: 4911217 (1990-03-01), Dunn et al.
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5073781 (1991-12-01), Stickelbrocks
patent: 5126745 (1992-06-01), Steinhagen et al.
patent: 5144314 (1992-09-01), Malmberg et al.
patent: 5164732 (1992-11-01), Brockelsby et al.

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