Capacitive RFID tag encoder

摘要

In one embodiment, a capacitive encoding system is provided that includes a first conductive element; a second conductive element; and a capacitive encoder adapted to drive the first conductive element with a first RF signal and to drive the second conductive element with a second RF signal, wherein the second RF signal is out of phase with the first RF signal by a predetermined phase so as to capacitively excite an RFID tag in proximity to the first and second conductive elements.