Title :
Novel single-loop sigma-delta modulator with extended dynamic range
Author :
Li, Hongyi ; Wang, Yuan ; Jia, Song ; Zhang, Xing
Author_Institution :
Key Lab. of Microelectron. Devices & Circuits, Peking Univ., Beijing, China
Abstract :
Using an auxiliary quantizer before unity-STF SDM, a novel 3rd-order dual-quantizer SDM with extended dynamic range is presented. With hybrid distributed feedback & feedforward paths and an internal feedforward path, a novel low-distortion 3rd-order SDM with simple adder before quantizer is proposed as the unity-STF SDM. Simulations show their perfect immunity to non-idealities.
Keywords :
adders; sigma-delta modulation; 3rd-order dual-quantizer SDM; adder; auxiliary quantizer; hybrid distributed feedback path; internal feedforward path; single-loop sigma-delta modulator; unity-STF SDM; Bandwidth; Capacitors; Dynamic range; Feedforward neural networks; Modulation; Multi-stage noise shaping; Noise; Sigma-delta modulator; WCDMA; extended dynamic range; low-distortion; non-idealities;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of
Conference_Location :
Tianjin
Print_ISBN :
978-1-4577-1998-1
Electronic_ISBN :
Pending
DOI :
10.1109/EDSSC.2011.6117738