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Qin, L., El-Sankary, K., & Sawan, M. (2006). A 1.8 V CMOS fourth-order Gm-C bandpass sigma-delta modulator dedicated to front-end ultrasonic receivers. Analog Integrated Circuits and Signal Processing, 48(2), 121-132. Lien externe
Qin, L. (2004). Design and validation of a GM-C bandpass sigma-delta modulator dedicated to front-end ultrasonic receivers [Mémoire de maîtrise, École Polytechnique de Montréal]. Disponible