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Mostrando ítems 21-30 de 57
Artículo
High-level synthesis of switched-capacitor, switched-current and continuous-time ΣΔ modulators using SIMULINK-based time-domain behavioral models
(Institute of Electrical and Electronics Engineers, 2005)
This paper presents a high-level synthesis tool for ΣΔ Modulators (ΣΔMs) that combines an accurate SIMULINK-based time-domain behavioral simulator with a statistical optimization core. Three different circuit techniques ...
Ponencia
A 14-bit 4-MS/s Multi-bit Cascade Sigma-Delta Modulator in CMOS 0.35-um Digital Technology
(2000)
This paper presents a 4th-order 3-stage cascade SD modulator that achieves 14-bit dynamic range at 4MS/s using low oversampling ratio. It includes a programmable multi-bit quantizer in the last stage, providing 2-, 3-, ...
Artículo
Chaos From Switched-Capacitor Circuits: Discrete Maps
(Institute of Electrical and Electronics Engineers, 1987)
A special-purpose analog computer made of switched-capacitor circuits is presented for analyzing chaos and bifurcation phenomena in nonlinear discrete dynamical systems modeled by discrete maps *n + t = fan)-Experimental ...
Ponencia
Reconfiguration of Cascade ΣΔ Modulators for Multistandard GSM/Bluetooth/UIMTS/WLAN Transceivers
(Institute of Electrical and Electronics Engineers, 2006)
This paper presents design considerations for cascade Sigma-Delta Modulators (ΣΔMs) included in multi-standard wireless transceivers. Four different standards are covered: GSM, Bluetooth, UMTS and WLAN. A top-down design ...
Ponencia
A 2.5-V ΣΔ modulator in 0.25-um CMOS for ADSL
(Institute of Electrical and Electronics Engineers, 2002)
This paper presents a dual-quantization SC Sigma-Delta Modulator intended for A/D Conversion in ADSL applications.
Ponencia
Design of RC-active oscillators using composite amplifiers
(Institute of Electrical and Electronics Engineers, 1991)
The design of composite opamp Wien-Bridge oscillators is systematically approached by using a general model including amplitude control issues. Two different design criteria are presented and their main features summarized. ...
Ponencia
CMOS SPADs selection, modeling and characterization towards image sensors implementation
(Institute of Electrical and Electronics Engineers, 2012)
The selection, modeling and characterization of Single Photon Avalanche Diodes (SPADs) are presented. Working with the standard 180nm UMC CMOS process, different SPAD structures are proposed in combination with several ...
Ponencia
MATLAB/SIMULINK-Based High-Level Synthesis of Discrete-Time and Continuous-Time Sigma-Delta Modulators
(Institute of Electrical and Electronics Engineers, 2004)
This paper describes a tool that combines an accurate SIMULINK-based time-domain behavioural simulator with a statistical optimizer for the automated high-level synthesis of ΣΔ Modulators (ΣΔMs). The combination of high ...
Ponencia
Analysis and Experimental Characterization of Idle Tones in 2nd-Order Bandpass Sigma-Delta Modulators - A 0.8μm CMOS Switched-Current Case Study
(Institute of Electrical and Electronics Engineers, 2001)
Ths paper analyses the tonal behaviour of the quantization noise in 2nd-order bandpass SD modulators. The analysis previously performed for lowpass modulators is extended to the bandpass case. As a result, closed-form ...
Ponencia
High-order cascade multibit /spl Sigma//spl Delta/ modulators for xDSL applications
(Institute of Electrical and Electronics Engineers, 2000)
This paper explores the use of /spl Sigma//spl Delta/ modulators for A/D conversion in xDSL applications. Two high-order multibit architectures, the 2-1-1mb modulator and a novel 2-1-1-1mb cascade (MASH), are proposed to ...