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Mostrando ítems 11-20 de 49
Ponencia
Experimental Characterization of IdleTones in Second-Order Bandpass ΣΔ Modulators
(2000)
This paper analyses the tonal behaviour of the quantization noise in second-order bandpass ΣΔ modulators. The analysis performed for lowpass modulators is extended to the bandpass case. As a result, closed form expressions ...
Ponencia
Ponencia
Harmonic Distortion in Fully-Differential Switched-Current Sigma-Delta Modulators
(1999)
This paper presents a systematic analysis of the harmonic distortion in SD modulators (SDMs) implemented with fully-differential switched-current (SI) circuits. Closed form expressions are derived for the third-order ...
Ponencia
Expandible high-order cascade ya modulator with constant, reduced systematic loss of resolution
(Institute of Electrical and Electronics Engineers, 2003)
An arbitrary order sigma-delta modulator cascude architecture is presented with only I-bit loss of resolution due to scaling issues, even with single-bit quantizulion. This loss is kept with a high overloading point, ...
Ponencia
Design of a power-efficient widely-programmable Gm-LC band-pass sigma-delta modulator for SDR
(Institute of Electrical and Electronics Engineers, 2016)
This paper presents the design and implementation of a fourth-order band-pass continuous-time modulator intended for the digitization of radio-frequency signals in softwaredefined- radio applications. The modulator ...
Ponencia
A 0.13μm CMOS current steering D/A converter for PLC and VDSL applications
(2005)
This paper describes the design of a 12-bit 80MS/s Digital-to-Analog converter implemented in a 0.13μm CMOS logic technology. The design has been computer-aided by a developed toolbox for the simulation and verification ...
Ponencia
A SIMULINK-based approach for fast and precise simulation of switched-capacitor, switched-current and continuous-time /spl Sigma//spl Delta/ modulators
(Institute of Electrical and Electronics Engineers, 2003)
This paper describes how to extend the capabilities of SIMULINK for the time-domain simulation of /spl Sigma//spl Delta/ modulators implemented by using switched-capacitor, switched-current and continuous-time circuits, ...
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-, ...
Ponencia
Continuous-time cascaded ΣΔ modulators for VDSL: A comparative study
(The International Society for Optical Engineering - SPIE, 2005)
This paper describes new cascaded continuous-time ΣΔ modulators intended to cope with very high-rate digital subscriber line specifications, i.e 12-bit resolution within a 20-MHz signal bandwidth. These modulators have ...
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 ...