Abstract: An RFID reader, tuning method and computer readable medium. A carrier signal is transmitted. A plurality of feedback signals produced in the RFID reader are measured when transmitting the carrier signal with a variable matching network set at a plurality of impedance values that are different from one another. It is determined which impedance value of the plurality of impedance values produced a feedback signal having a highest level of the plurality of feedback signals. The variable matching network is set to the determined impedance value.

Abstract: An RFID reader, tuning method and computer readable medium. A carrier signal is transmitted. A plurality of feedback signals produced in the RFID reader are measured when transmitting the carrier signal with a variable matching network set at a plurality of impedance values that are different from one another. It is determined which impedance value of the plurality of impedance values produced a feedback signal having a highest level of the plurality of feedback signals. The variable matching network is set to the determined impedance value.

Abstract: An apparatus is disclosed for use in interrogating a RF signal. The apparatus includes a reader module that determines the transmitted RFID information associated with the RF signal based on tag type parameters associated with a first RFID tag type. The apparatus further includes a validation module that compares at least a portion of the transmitted RFID information with an expected characteristics associated with the RFID tag type to determine if the RF signal was transmitted by a RFID tag associated with the RFID tag type. The apparatus may also include a tag type selector module that determines the tag type parameters used by the reader module.

Abstract: A radio frequency identification (RFID) reader of an apparatus in an example employs substantially synchronized sampling to obtain a signal from an RFID card notwithstanding employment by the RFID card of any of amplitude shift keying (ASK), frequency shift keying (FSK), or phase shift keying (PSK). The RFID reader decodes the signal notwithstanding the employment by the RFID card of any of ASK, FSK, or PSK.