Psion Inc.

Psion Teklogix Inc.

Pierre Bonnefoy

Philippe Porte

Benjamin Limongi

An antenna apparatus for determining the position of a radio-frequency transponder is provided, comprising a phased array of antennas enabled to transmit and receive power at a given frequency for communicating with a radio frequency (RF) transponder, the phased array being movable; and a phase shifter for providing a phase shift to at least one antenna of the phased array to provide a minima in a main radiated lobe of the phased array, such that when the phased array is moved from a first position, for detecting the RF transponder via the main radiated lobe, to a second position, where a signal from the RF transponder is minimized, a position of the RF transponder determined to be along an axis of the minima in the second position.

Antenna apparatus for determining the position of a radio-frequency transponder

An RFID system for determining the location of a vehicle or mobile object that passes thereover is presented. The system comprises a tag arrangement having at least one tag where the arrangement having a width of between approximately 0.5 m and 2 m.

Localisation of vehicle or mobile objects based on embedded RFID tags

An RFID based monitoring system and method is provided. A tag module is allocated to an item to be traced, which is operable by an RFID reader. In the system, the tag module is accessed through conductive coupling with an entry point that is operable in an RF field of the RFID reader.

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Ceyreste, France

Pierre Bonnefoy