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US 2001/0040930 A1Published application
Multi-band direct sampling receiver
OwnerDuane L. Abbeyinventor
Life of this patent
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Abstract
A multi-band direct sampling receiver is described. The multi-band direct sampling receiver of the present invention is based upon state-of-the-art, very high speed integrated circuit and digital signal processing. As such, the performance of the direct sampling receiver of the present invention contemplates improvements in large, very high-speed integrated circuits. The direct sampling receiver of the present invention contemplates large scale integration and very large scale integration techniques.
Claims14
A multi-band direct sampling radio receiver, comprising:
- a preselector receiving a radio-frequency input signal for selecting the frequency band of the received radio frequency signal;
- a low-pass or band-pass sigma-delta modulator analog-to-digital converter receiving the preselected radio-frequency input signal from said preselector, said low-pass or band-pass sigma-delta modulator analog-to-digital converter converting the radio-frequency input signal into a discrete-time digital signal;
- a digital down converter receiving the discrete-time digital signal from said low-pass or band-pass sigma-delta modulator analog-to-digital converter for reducing the frequency of the discrete-time digital signal;
- a digital signal processor receiving the discrete-time digital signal from said digital down converter for digitally processing and demodulating the discrete-time digital signal and passing said demodulated discrete-time digital signal to an external host interface;
- and
- a digital-to-analog converter receiving the discrete-time digital signal from said digital signal processor for converting the discrete-time digital signal into a continuous-time analog output signal.
3 more elements
A multi-band direct sampling radio receiver, comprising:
- a preselector receiving a radio-frequency input signal for selecting the frequency band of the received radio frequency signal;
- a low-pass or band-pass sigma-delta modulator analog-to-digital converter receiving the preselected radio-frequency input signal from said preselector, said low-pass or band-pass sigma-delta modulator analog-to-digital converter converting the radio-frequency input signal into a discrete-time digital signal;
- a coarse resolution digital down converter receiving the discrete-time digital signal from said low-pass or band-pass sigma-delta modulator analog-to-digital converter for reducing the frequency of the discrete-time digital signal;
- a fine resolution digital down converter receiving the discrete-time digital signal from said coarse resolution digital down converter for further reducing the frequency of the discrete-time digital signal;
- a digital signal processor receiving the discrete-time digital signal from said fine resolution digital down converter for digitally processing and demodulating the discrete-time digital signal and passing said demodulated discrete-time digital signal to an external host interface;
- and
- a digital-to-analog converter receiving the discrete-time digital signal from said digital signal processor for converting the discrete-time digital signal into a continuous-time analog output signal.
4 more elements
Dependencies are inferred from the claim text.