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| Number | Title | Issue Date |
| 8159291 | AM (amplitude modulation) demodulation system for RFID reader device An RFID reader device (31), of the type comprising a demodulator (6) for receiving from a RFID tag (11) an AM (Amplitude Modulation) wave (20) having a predetermined frequency (f) and for retrieving, from the AM wave (20), a demodu... | 04/17/2012 |
| 7456743 | Combined low and high frequency RFID system A radio frequency identification (RFID) system is described, including a low frequency read-write device (1B) comprising an antenna (2B) connected to a transceiver (4B), for receiving/transmitting low RF waves from/to an RFID tag (5B), an... | 11/25/2008 |
| 7432809 | System and method for improving the detection efficiency of an identification system including a transponder and a reader The invention relates to a radio frequency (RF) system and method for improving the detection efficiency of an identification system including a transponder and a reader. The system (1) comprises an interrogator reader device (3) having an inter... | 10/07/2008 |
| 7307535 | Air coil RF transponder and method of making same An RF air coil transponder includes a rotatable carrier, such as a rigid reel. A coil is wound about the reel and at least one field influencing body for influencing the electric and/or the magnetic field within the coil is supported by the reel. The rigidity of the... | 12/11/2007 |
