Integrated multi-tuner satellite receiver architecture and associated method

摘要: Multi-tuner receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as transponder set-top box spectrum for satellite communications. These multi-tuner significant advantages over prior direct down-conversion (DDC) low intermediate-frequency (IF) architectures, particularly where two tuners on the same integrated circuit. Rather than using low-IF frequency or directly converting channel to DC, provided by circuitry allows conversion range around DC. This can be implemented, example, large-step local oscillator (LO) provides tune mixing signal. Once mixed down, may then fine-tuned through digital processing, use wide-band analog-to-digital converter (ADC) narrow-band tunable bandpass ADC.