Patent ID: 6717981
Filing Date: 2004-04-06
Classification: H04B

Abstract:
A transceiver comprising:a transmitter that is configured to receive an input signal and produces therefrom an in-phase transmit signal and a quadrature-phase transmit signal, a modulator that is configured to modulate the in-phase transmit signal and the quadrature-phase transmit signal and to produce therefrom a composite signal that includes an intended signal component and an unwanted signal component, a demodulator that is selectively configured to demodulate the composite signal and to produce therefrom an in-phase receive signal and a quadrature-phase receive signal, and a receiver that is configured to receive the in-phase receive signal and the quadrature-phase receive signal, and to produce therefrom a characterization signal that is correlated substantially to the unwanted signal component of the composite signal, wherein the transceiver is configured to adjust at least one of a phase and an amplitude of at least one of the in-phase transmit signal and the quadrature-phase transmit signal, based on the characterization signal.