Systems and methods are described for reading EID tags in difficult to reach locations using a portable RFID reader. In many embodiments, the system includes a portable RFID reader and one or more stationary antenna assemblies. The stationary antenna assemblies typically include a loop antenna in a first...http://www.google.fr/patents/US7764181?utm_source=gb-gplus-shareBrevet US7764181 - Inductively coupled loop antenna for a radio frequency identification reader
Inductively coupled loop antenna for a radio frequency identification reader
