Antenna arrangement
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United States of America Patent
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Jan 5, 2010
Grant Date -
Apr 17, 2008
app pub date -
Dec 21, 2005
filing date -
Dec 21, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A network of antennas for contactless reading or writing of RFID tags in a detection volume, including three or four flat, independent antennas sequentially connected to a single reader by a switch, wherein planes of the antennas pass through a reading/writing/detection volume centered in the detection volume, for every pair of antennas, an intersection of their planes is included in the optimal reading/writing volume, and the antennas are arranged so that any direction in the optimal reading/writing volume forms an angle of about 45° or less with at least one of the planes of the antennas.
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