Patent ID: 7272373
Filing Date: 2007-09-18
Classification: H04B

Abstract:
1. An integrated receiver, comprising: a mixer coupled to receive an RF signal spectrum and a mixing signal as inputs and having a mixed signal as an output, the RF input signal spectrum comprising a plurality of channels; local oscillator (LO) generation circuitry coupled to receive a channel selection signal as an input and configured to provide an oscillation signal, the oscillation signal being dependent upon the channel selection signal and being used to generate the mixing signal for the mixer; conversion circuitry coupled to receive the mixed signal from the mixer and configured to output a digital signal; digital-signal-processor (DSP) circuitry coupled to receive the digital signal from the conversion circuitry and configured to output a digital audio signal, the DSP circuitry being configured to be clocked in operation using a digital clock signal; and a ratiometric clock system configured to generate the mixing signal and the digital clock signal from the oscillation signal so that the mixing signal and the digital clock signal have a common base clock signal; wherein the mixer, the LO generation circuitry, the conversion circuitry, and the DSP circuitry are integrated within a single integrated circuit.