Telecommunications – Transmitter and receiver at separate stations – Having diverse art device
Patent
1996-04-05
1998-10-13
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at separate stations
Having diverse art device
455 66, 455562, 34082554, 340572, H04Q 720, H04Q 522
Patent
active
058226834
ABSTRACT:
The present invention relates to a wireless transponder system. The transponder system includes a transponder device which is capable of operating over a relatively long range without the need for frequent battery replacements. The transponder device includes both an antenna means and a signal modification means. The signal modification means is operative for modulating an interrogation signal received from a reader device. The modulation means may utilize low power switching components that allow it to operate continuously while drawing very little current from an internal battery. In this way, the battery within the transponder will not become prematurely drained and can last up to substantially the shelf-life of the battery. In one embodiment, the transponder of the present invention utilizes a retrodirective array antenna for achieving increased antenna gain in the direction of a reader device, and therefore increased range, without an associated reduction in effective antenna coverage.
REFERENCES:
patent: 3103655 (1963-09-01), Jones
patent: 3713148 (1973-01-01), Cardullo et al.
patent: 3757035 (1973-09-01), Sullivan
patent: 4114151 (1978-09-01), Denne et al.
patent: 4337376 (1982-06-01), Gruenberg
patent: 4364043 (1982-12-01), Cole et al.
patent: 4956645 (1990-09-01), Guena et al.
patent: 5095309 (1992-03-01), Troyk et al.
patent: 5164719 (1992-11-01), Guena et al.
patent: 5189397 (1993-02-01), Watkins et al.
patent: 5245346 (1993-09-01), Nishimura et al.
patent: 5294931 (1994-03-01), Meier
patent: 5305008 (1994-04-01), Turner et al.
patent: 5355521 (1994-10-01), Henoch et al.
patent: 5425032 (1995-06-01), Shloss et al.
patent: 5440302 (1995-08-01), Irmer et al.
patent: 5448110 (1995-09-01), Tuttle et al.
patent: 5602744 (1997-02-01), Meek et al.
patent: 5615409 (1997-03-01), Forssen et al.
patent: 5645607 (1997-07-01), Schurmann et al.
patent: 5680459 (1997-10-01), Hook et al.
Ball Aerospace and Technologies Corp.
Bost Dwayne D.
Gelin Jean A.
LandOfFree
Pseudo-passive transponder device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pseudo-passive transponder device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pseudo-passive transponder device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-326535