Improved sigma-delta analog-to-digital converter using time-stretching technique

Frederic Coppinger; V. Magoon; A. S. Bhushan; Bahram Jalali

doi:10.1117/12.370165

12 November 1999 Improved sigma-delta analog-to-digital converter using time-stretching technique

Frederic Coppinger, V. Magoon, A. S. Bhushan, Bahram Jalali

Proceedings Volume 3795, Terahertz and Gigahertz Photonics; (1999) https://doi.org/10.1117/12.370165
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Frederic Coppinger, V. Magoon, A. S. Bhushan, and Bahram Jalali "Improved sigma-delta analog-to-digital converter using time-stretching technique", Proc. SPIE 3795, Terahertz and Gigahertz Photonics, (12 November 1999); https://doi.org/10.1117/12.370165

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