Patent ID: 7936252

Claim:
A system for communicating with an RFID transponder comprised of: a transceiver having at least a receiver portion and a transmitter portion, wherein said receiver portion has an adjustable gain capable of varying amplification of a signal detected by said receiver portion, wherein and said transmitter portion has an adjustable strength electromagnetic interrogation signal used to encode information into or read information from said RFID transponder; a signal-to-noise ratio module in communication with said transceiver, wherein said signal-to-noise ratio module determines a signal-to-noise ratio of a signal received by said receiver portion of said transceiver; and an adaptive control module in communication with said signal-to-noise ratio module and said transmitter portion and said receiver portion of said transceiver, wherein based upon said signal-to-noise ratio, said adaptive control module: adjusts a signal strength of said electromagnetic interrogation signal of said transmitter portion of said transceiver, or adjusts said gain of said receiver portion of said transceiver, or adjusts both said signal strength of said electromagnetic interrogation signal of said transmitter portion of said transceiver and said gain of said receiver portion of said transceiver, and wherein said system encodes said RFID transponder that originated said signal used to determine said signal-to-noise ratio.