Communications: directive radio wave systems and devices (e.g. – Radar transponder system
Patent
1996-06-20
1997-04-15
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
342 46, 342 51, G01S 1375, G01S 1384
Patent
active
056214111
ABSTRACT:
A method of determining the exact location of a transponder with respect to a reader antenna, with no additional components to the existing system required, is disclosed. An existing pin of the reader IC, the RSTP pin, provides an analog fieldstrength signal from which the distance to the reader antenna is deduced via known in the art signal processing methods. A grid or even an exact position location along a route is also achievable with initial set-up of at least two transponders a predetermined distance apart and a reader antenna.
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Aslanidis Kostantin
Hagl Andreas
Mollik Horst
Donaldson Richard L.
Kesterson James C.
Mapstone Rebecca A.
Sotomayor John B.
Texas Instruments Incorporated
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