A fourth-order bandpass sigma-delta modulator |
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| Authors: | Jantzi S.A. Snelgrove W.M. Ferguson P.F. Jr. |
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| Affiliation: | Dept. of Electr. Eng., Toronto Univ., Ont.; |
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| Abstract: | The modulator of a bandpass analog/digital (A/D) converter, with 63 dB signal/noise for broadcast AM bandwidth signals centered at 455 kHz, has been implemented by modifying a commercial digital-audio sigma-delta (ΣΔ) converter. It is the first reported fully monolithic implementation of bandpass noise shaping and has applications to digital radio |
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