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Receiver with sigma-delta analog-to-digital converter for sampling a received signal

  • US 6,005,506 A
  • Filed: 12/09/1997
  • Issued: 12/21/1999
  • Est. Priority Date: 12/09/1997
  • Status: Expired due to Term
First Claim
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1. A receiver for demodulating an RF signal comprising:

  • a front end stage configured to receive and downconvert said RF signal to an intermediate (IF) signal, said IF signal having a center frequency and a two-sided bandwidth;

    a sigma-delta analog-to-digital converter coupled to said front end stage, said Σ

    Δ

    ADC configured to receive and sample said IF signal to provide IF samples, said Σ

    Δ

    ADC being clocked at a sampling frequency; and

    a digital signal processor coupled to said Σ

    Δ

    ADC, said digital signal processor configured to receive and demodulate said IF samples in accordance with a modulation format used to produce said RF signal.

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