Patent ID: 8532601
Filing Date: 2013-09-10
Classification: H04B

Abstract:
1. An integrated broadcast receiver having a plurality of modes of operation for different broadcast bands, comprising: mixing circuitry configured to receive broadcast input signals and mixing signals in a plurality of modes of operation for a plurality of broadcast bands, the mixing circuitry being further configured to output real path (I) and imaginary path (Q) signals in each of the plurality of modes of operation; a band selection input configured to receive a band selection signal to identify one of the plurality of modes of operation, each of the plurality of modes of operation being associated with a different broadcast band; local oscillator (LO) generation circuitry configured to receive the band selection signal and a channel selection signal and being further configured to output the mixing signals to the mixing circuitry in each of the plurality of modes of operation based upon the band selection signal and the channel selection signal, the mixing signals being configured so that the I and Q signals from the mixing circuitry in each of the plurality of modes of operation are at a non-zero intermediate frequency (IF) equal to or below about 600 kHz; analog-to-digital conversion (ADC) circuitry coupled to receive the I and Q signals from the mixing circuitry in each of the plurality of modes of operation and configured to output real path (I) and imaginary path (Q) digital signals; and a digital-signal-processor (DSP) circuitry coupled to receive the digital I and Q signals from the ADC circuitry and configured to output digital audio signals, the digital audio signals representing audio content within a broadcast channel in the broadcast band for the selected mode of operation; digital-to-analog conversion (DAC) configured to receive the digital audio signals and to provide analog audio output signals; and a digital interface configured to receive the digital audio signals and to provide digital audio output signals; wherein the mixing circuitry, the LO generation circuitry, the ADC circuitry, the DSP circuitry, the DAC circuitry, and the digital interface are integrated within a single integrated circuit; wherein the integrated circuit is made using a process that comprises a CMOS process; and wherein the ADC circuitry and the DSP circuitry are configured to be used in each of the plurality of modes of operation.