Title :
An improved discrete time model for the analysis of Delta Sigma modulators with bandlimited Gaussian inputs
Author :
Stonick, John T. ; Ardalan, Sasan H.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
Abstract :
A second-order Delta Sigma modulator is analyzed using linearized gains to model the nonlinearities associated both with the comparator and with the saturation of the integrators. A set of nine equations in nine unknowns is derived for this model. Simulations results are presented that show that saturation of the integrators can actually increase the SNR.<>
Keywords :
modulation; modulators; SNR; bandlimited Gaussian inputs; comparator; discrete time model; equations; integrators; linearized gains; nonlinearities; saturation; second order Delta Sigma modulators; simulations; Baseband; Computational modeling; Delta-sigma modulation; Nonlinear distortion; Signal processing; Testing;
Conference_Titel :
Communications, 1988. ICC '88. Digital Technology - Spanning the Universe. Conference Record., IEEE International Conference on
Conference_Location :
Philadelphia, PA, USA
DOI :
10.1109/ICC.1988.13643
