Simultaneous data transmission and reception system using microwaves
AssigneeThomson Composants Microondes
InventorsMarc Camiade, Veronique Serru, Dominique Geffroy
Life of this patent
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Abstract
A system including a first station (1) known as a beacon and at least one second station (2) known as a badge, each station having a transmission channel with an antenna and a reception channel with an antenna. To allow multiplex exchanges, using simultaneous transmission and reception, the two antennas (6, 11) (13, 15) in any given station are decoupled by cross-polarization but antennas which communicate with each other (6, 13) (11, 15) have compatible polarization. Applications to identification systems using microwave transmission.
Claims11
A system to exchange data in the form of microwaves, between a first station and at least one second station, each of said first and second stations including a pair of antennas, said data exchange system operating in the write and read mode simultaneously and comprising:
- a first channel to allow said first station to write data to said second station, the first channel comprising a first transmission antenna included in said first station and a first reception antenna included in said second station, said first transmission and reception antennas being compatibly polarized,
- a second channel to allow said first station to read data recorded in said second station simultaneously with the writing of data from said first station to said second station, the second channel including a second transmission-reception antenna in the first station an a second transmission-reception antenna in the second station, said second pair of transmission-reception antennas being compatibly polarized, and wherein
- the polarization of the first transmission and reception antenna pair included in said first channel crosses the polarization of the transmission-reception antenna pair included in said second channel.
Dependencies are inferred from the claim text.