An RFID relay device for an RFID transponder and methods are provided for relaying an RFID signal. The RFID relay device comprises at least two antenna and a transmission line coupling the at least two antenna. In addition to the two antenna and the transmission line, the RFID relay device comprises...http://www.google.com.au/patents/US20040217867?utm_source=gb-gplus-sharePatent US20040217867 - RFID relay device and methods for relaying an RFID signal
