RFID TAG PARAMETER DETERMINATION USING PHASE

RFID TAG PARAMETER DETERMINATION USING PHASE

RFID tag reply phase measurements can be used to estimate tag location and motion. The phase measurements can be used to directly calculate tag location/motion or to generate correlation probabilities with candidate tags having different location motion characteristics. An RFID reader system can tak...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DIORIO, Christopher J, OURSLAND, Austin, MORETTI, Vincent C, MARTINEZ, Rene Dominic, TEXERMAN, Yossi, ONEN, Omer, TARANTINO, Joe, THOMAS, Michael H, COOPER, Scott A, NIKITIN, Pavel
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Beschreibung
Zusammenfassung:RFID tag reply phase measurements can be used to estimate tag location and motion. The phase measurements can be used to directly calculate tag location/motion or to generate correlation probabilities with candidate tags having different location motion characteristics. An RFID reader system can take multiple phase measurements for a tag, at different carrier frequencies, within a single inventory round, to ensure that the tag remains within range of the reader system.