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Radio frequency identification transceiver

  • US 8,351,490 B2
  • Filed: 01/28/2008
  • Issued: 01/08/2013
  • Est. Priority Date: 01/26/2007
  • Status: Expired due to Fees
First Claim
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1. A radio frequency identification transceiver, comprising:

  • a transmitter path, comprising;

    a pulse shaper to tunably shape a pulse of a signal to be transmitted in different predefined frequency ranges;

    a modulator to modulate the shaped pulse to be transmitted into one of a plurality of predefined frequency ranges;

    a receiver path, comprising;

    a demodulator to demodulate a received signal from the plurality of predefined frequency ranges;

    an in-phase mixer to provide a first differential in-phase signal and a second differential in-phase signal;

    a quadrature mixer to provide a first differential quadrature signal and a second differential quadrature signal;

    an in-phase amplifier coupled to the in-phase mixer to amplify the first differential in-phase signal and the second differential in-phase signal;

    a quadrature amplifier coupled to the quadrature mixer to amplify the first differential quadrature signal and the second differential quadrature signal.

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