Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Unique identity
Patent
1990-06-26
1991-12-10
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
Unique identity
342 42, 342 51, G01S 1380
Patent
active
050722220
ABSTRACT:
An electromagnetic identification and location system is described. The system comprises at least one interrogator which, in operation, generates an electromagnetic interrogation field by at least one antenna coil, and at least one responder which, in response to the electromagnetic interrogation field, generates a code signal in accordance with a binary code stored in a code circuit of the responder. The code signal can be recognized by an identifier. According to the invention, the responder is provided with a generator which, in response to the interrogation field, generates and transmits a pilot signal. The system further includes a position-sensitive antenna arrangement for receiving the pilot signal.
REFERENCES:
patent: 3149421 (1964-09-01), O'Brien
patent: 3431760 (1969-03-01), Martens
patent: 3737911 (1973-06-01), Sakuragi et al.
patent: 3798641 (1974-03-01), Preti
patent: 3801733 (1974-04-01), Bailey
patent: 3816709 (1974-06-01), Walton
patent: 3984835 (1976-10-01), Kaplan et al.
patent: 4167007 (1979-09-01), McGeoch et al.
patent: 4177466 (1979-12-01), Reagen
patent: 4242661 (1980-12-01), Henoch et al.
patent: 4292637 (1981-09-01), Johnson
patent: 4489313 (1984-12-01), Pfister
patent: 4546241 (1985-10-01), Walton
patent: 4551725 (1985-11-01), Schaffer
patent: 4604733 (1986-08-01), Brown et al.
patent: 4656478 (1987-04-01), Leuenberger
patent: 4663625 (1987-05-01), Yewen
patent: 4679046 (1987-07-01), Curtis et al.
N.V. Nederlandsche Apparatenfabriek Nedap
Sotomayor John B.
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