Patent ID: 7432874

Claim:
An antenna array for a RFID antenna having an operating frequency between 100 kHz and 30 MHz, which is coupled to at least one reader, comprising: a) at least one antenna system comprising at least two antennas each having at least one loop having at least one winding wherein said at least two antennas are disposed approximately in a plane and wherein said at least two antenna loops overlap at each other partially; b) at least one multiplexer disposed between said at least one reader and said at least one antenna system, wherein said at least one multiplexer is for selected activation of the antennas; and c) at least one device for opening an inactively switched antenna loop; wherein the antenna array is for communicating with a transponder, wherein said antenna loop has at least one side having an angle deviating from 0 degrees to 90 degrees relative to a movement direction of the transponder, and wherein the antenna loop has a pentagonal shape.