Sigma-delta-sigma modulator for high performance analog-to-digit

Details Sigma-delta-sigma modulator for high performance analog-to-digit Sigma-delta-sigma modulator for high performance analog-to-digit

1997-12-19

2000-05-09

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341144, H03M 302

Patent

active

060610085

ABSTRACT:
A sigma-delta-sigma modulator for analog-to-digital and digital-to-analog converters is described. The sigma-delta-sigma modulator is amenable to fabrication of high speed LSI and VLSI digital components for fixed and programmable processes for minimizing and eliminating required analog circuitry in a digital radio. The sigma-delta-sigma modulator is utilized in a direct sampling receiver in which the received RF is converted by high resolution analog-to-digital processing and subsequently translated to baseband, filtered and demodulated completely in the digital domain. The modulator is also utilized in a direct digital transmitter in which the baseband modulation is formed, translated to RF, and converted to analog by high resolution digital-to-analog processing completely in the digital domain.

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patent: 5682161 (1997-10-01), Ribner et al.
patent: 5742246 (1998-04-01), Kuo et al.
patent: 5757301 (1998-05-01), Kuo et al.

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