Title :
An enhanced first-order sigma-delta modulator with a controllable signal-to-noise ratio
Author :
Al-Alaoui, Mohamad Adnan ; Ferzli, Rony
Author_Institution :
Dept. of Electr. & Comput. Eng., American Univ. of Beirut
fDate :
3/1/2006 12:00:00 AM
Abstract :
This paper presents an enhanced first-order sigma-delta modulator. The proposed modulator, derived using the Al-Alaoui operator, outperforms the conventional modulator. A comparison is drawn showing that the conventional sigma-delta modulator is a special case of the enhanced sigma-delta modulator. The paper includes an analytical derivation as well as extensive simulations revealing the superiority of the proposed modulator reaching optimal performance
Keywords :
sigma-delta modulation; Al-Alaoui operator; first-order sigma-delta modulator; signal-to-noise ratio; Analog-digital conversion; Delta-sigma modulation; Linearity; Multiaccess communication; Noise shaping; Performance analysis; Quantization; Signal resolution; Signal to noise ratio; Transfer functions; Al-Alaoui operator; analog-to-digital converter (ADC); digital-to-analog converter (DAC); sigma-delta modulator; signal-to-noise ratio (SNR); stability;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2005.859049
