DEVICE FOR DETECTING AN ITEM OF ELECTRONIC EQUIPMENT AND FOR COMMUNICATING WITH TWO NEAR-FIELD COMMUNICATION ANTENNAE

DEVICE FOR DETECTING AN ITEM OF ELECTRONIC EQUIPMENT AND FOR COMMUNICATING WITH TWO NEAR-FIELD COMMUNICATION ANTENNAE

A device for detecting the approach of a portable electronic apparatus and for communicating in the near field with a first antenna for communication at high frequency and an electrical power-supply and control unit having a device for measuring a variation in the amplitude of an electrical paramete...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Vassilieff, Youri, Cheikh, Mohamed, Saavedra, Enrique
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
TRANSMISSION
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Beschreibung
Zusammenfassung:A device for detecting the approach of a portable electronic apparatus and for communicating in the near field with a first antenna for communication at high frequency and an electrical power-supply and control unit having a device for measuring a variation in the amplitude of an electrical parameter representative of detection of the approach of the apparatus. The device includes a second near-field communication antenna housed in a space delimited by the first antenna and associated with a resonance circuit by being connected to the control unit by a switch having a first position for near-field communication where the second antenna is not supplied with power and a second position for approach detection where the second antenna is connected and enters into resonance with the first, active antenna.