US Patent 7561050 System and method to automate placement of RFID repeaters

The Automatic RFID Tuner has one or more RFID repeaters that can travel in the x, y and z axes through a densely packed pallet of goods. The RFID repeater identifies dead spots where RF signals from an RFID transceiver do not penetrate the dense packaging. The RFID repeater calculates a position that ensures the RF signal will reach all passive RFID tags in the dense packaging. The RFID repeater moves to the calculated position so that the RFID transceiver's signal will read all passive RFID tags in the dense packaging.