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Proceedings Paper

Improved sigma-delta analog-to-digital converter using time-stretching technique
Author(s): Frederic Coppinger; V. Magoon; A. S. Bhushan; Bahram Jalali
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Paper Abstract

The impact of the recently demonstrated time-stretch preprocessing on the performance of Analog-to-Digital Converter (ADC) is reported. We calculate the influence of time-stretch on the quantization noise, thermal noise and shot noise of Nyquist type ADC. We also study the effect of time-stretch on the quantization noise of (Sigma) -(Delta) converters. The results suggest that if ideal time stretching can be achieved, the resolution is increased by 1.5 and 2.5 bits for every octave of time-stretch in a first and second order modulator, respectively.

Paper Details

Date Published: 12 November 1999
PDF: 8 pages
Proc. SPIE 3795, Terahertz and Gigahertz Photonics, (12 November 1999); doi: 10.1117/12.370165
Show Author Affiliations
Frederic Coppinger, Univ. of California/Los Angeles (United States)
V. Magoon, Univ. of California/Los Angeles (United States)
A. S. Bhushan, Univ. of California/Los Angeles (United States)
Bahram Jalali, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 3795:
Terahertz and Gigahertz Photonics
R. Jennifer Hwu; Ke Wu, Editor(s)

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