Results 1 to 10 of about 35,140 (67)

Real-Time 100-GS/s Sigma-Delta Modulator for All-Digital Radio-Over-Fiber Transmission

Journal of Lightwave Technology, 2020
All-digital radio-over-fiber (RoF) transmission has attracted a significant amount of interest in digital-centric systems or centralized networks because it greatly simplifies the front-end hardware by using digital processing. The sigma-delta modulator (
Haolin Li, J. Bauwelinck, P. Demeester, G. Torfs, M. Verplaetse, J. Verbist, J. Van Kerrebrouck, L. Breyne, Chia-Yi Wu, L. Bogaert, B. Moeneclaey, X. Yin   +11 more
semanticscholar   +1 more source

Digital Mobile Fronthaul Based on Performance Enhanced Multi-Stage Noise-Shaping Delta-Sigma Modulator

Journal of Lightwave Technology, 2021
A novel topology multi-stage noise-shaping (MASH) delta-sigma modulator is proposed for 20-km digital mobile fronthaul (MFH) in this article. In the proposed MASH structure, a newly designed feedback unit is combined with a traditional fourth-order ...
K. Bai, Dongdong Zou, Zixuan Zhang, Zibin Li, Wei Wang, Qi Sui, Z. Cao, Fan Li   +7 more
semanticscholar   +1 more source

A 1.8-V digital-audio sigma-delta modulator in 0.8-μm CMOS

IEEE Journal of Solid-State Circuits, 1997
B A Wooley
exaly   +2 more sources

A 15-μW 105-dB 1.8-Vpp Potentiostatic Delta-Sigma Modulator for Wearable Electrochemical Transducers in 65-nm CMOS Technology

IEEE Access, 2020
Wearable electrochemical sensors represent a point of convergence between lab-on-a-chip technologies, advanced microelectronics and connected intelligence.
Joan Aymerich, A. Márquez, X. Muñoz‐Berbel, F. J. D. Campo, G. Guirado, L. Terés, F. Serra-Graells, M. Dei   +7 more
semanticscholar   +1 more source

Ultralow-Power Inverter-Based Delta-Sigma Modulator for Wearable Applications

IEEE Access
This paper introduces and experimentally validates a switched-capacitor inverter-based second-order 3-tap FIR single-bit Delta-Sigma Modulator ( $\Delta \Sigma $ M) designed for nanowatt-level analog-to-digital conversion in wearable healthcare devices ...
A. Catania, F. Gagliardi, M. Piotto, P. Bruschi, M. Dei   +4 more
semanticscholar   +1 more source

Improving performance of mobile fronthaul architecture employing high order delta-sigma modulator with PAM-4 format.

Optics Express, 2017
An improved high-order delta-sigma modulator with multi-level quantizer is proposed to enable carrier aggregation of 4G-LTE signals in mobile fronthaul. Different from conventional delta-sigma modulation-based digital mobile fronthaul, a 2-bit quantizer ...
Haibo Li, Rong Hu, Qi Yang, Ming Luo, Zhixue He, P. Jiang, Yongpiao Liu, Xiang Li, Shaohua Yu   +8 more
semanticscholar   +1 more source

A 4.5 nV/ $\surd$ Hz Capacitively Coupled Continuous-Time Sigma-Delta Modulator with an Energy-Efficient Chopping Scheme

IEEE Solid-State Circuits Letters, 2018
Hui Jiang, Costantino Ligouras, S. Nihtianov, K. Makinwa   +3 more
semanticscholar   +1 more source

A 75-MHz Continuous-Time Sigma–Delta Modulator Employing a Broadband Low-Power Highly Efficient Common-Gate Summing Stage

IEEE Journal of Solid-State Circuits, 2017
Carlos Briseno-Vidrios, Alexander Edward, Ayman Shafik, S. Palermo, J. Silva-Martínez   +4 more
semanticscholar   +1 more source

Dithered multi-bit sigma-delta modulator based DPWM for DC-DC converters

Applied Power Electronics Conference, 2015
J. Mooney, M. Halton, Petar Iordanov, Vincent O’Brien   +3 more
semanticscholar   +1 more source

A 170.7-dB FoM-DR 0.45/0.6-V Inverter-Based Continuous-Time Sigma–Delta Modulator

IEEE Transactions on Circuits and Systems II: Express Briefs, 2020
This brief presents a low-voltage inverter-based continuous-time sigma-delta modulator (CT-SDM). The inverter-based amplifiers are single-stage and their operating point is provided by a bulk-based current mirror.
Paulo Cesar C De Aguirre, Edoardo Bonizzoni, Franco Maloberti   +2 more
exaly   +2 more sources