NombreRío Fernández, Rocío del
DepartamentoElectrónica y Electromagnetismo
Área de conocimientoElectrónica
Categoría profesionalProfesora Titular de Universidad
Correo electrónicoSolicitar
           
  • Nº publicaciones

    68

  • Nº visitas

    6266

  • Nº descargas

    8051


 

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Diseño e implementación de un transceptor para identificación por radiofrecuencia (RFID)

Baños Aranceta, Bingen; Fernández Berni, Jorge; Río Fernández, Rocío del (2023)
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Cyber-Physycal Systems for Remote Animal Monitoring

Lozano Pons, Carmen; Fernández Berni, Jorge; Río Fernández, Rocío del (2020)
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A study on fundamental physical limitations of CMOS technologies

González Márquez, Rita; Fernández Berni, Jorge; Río Fernández, Rocío del (2019)
In this work the problem of power dissipation for nano-CMOS technologies is addressed. The main focus is to analyze the ...
Artículo
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Characterization-Based Modeling of Retriggering and Afterpulsing for Passively Quenched CMOS SPADs

Moreno García, Manuel; Pancheri, Lucio; Perenzoni, Matteo; Río Fernández, Rocío del; Guerra Vinuesa, Oscar; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2019)
The current trend in the design of systems based on CMOS SPADs is to adopt smaller technological nodes, allowing the ...
Trabajo Fin de Grado
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Análisis de circuitos analógicos para efectos en guitarra eléctrica

Rejón Mata, Alejandro Víctor; Río Fernández, Rocío del (2019)
La aparición de efectos de sonido para instrumentos musicales basados en circuitos electrónicos supuso en su día un aire ...
Ponencia
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Live Demonstration: Low-Power Low-CostCyber-Physical System for Bird Monitoring

García-Rodríguez, A.; Rodríguez-Sakamoto, R.; Fernández Berni, Jorge; Río Fernández, Rocío del; Marín, J.; Baena, M.; Bustamante, J.; Carmona Galán, Ricardo; Rodríguez Vázquez, Ángel Benito (IEEE, 2018)
This live demonstration showcases a cyber-physical system tailored for inexpensive remote bird monitoring. A comprehensive ...
Artículo
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Gaussian Pyramid: Comparative Analysis of Hardware Architectures

Oliveira, Fernanda DV.R.; Gomes, José Gabriel; Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2017)
This paper addresses a comparison of architectures for the hardware implementation of Gaussian image pyramids. Main ...
Ponencia
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Design of a power-efficient widely-programmable Gm-LC band-pass sigma-delta modulator for SDR

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (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 ...
Capítulo de Libro
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Image Feature Extraction Acceleration

Fernández Berni, Jorge; Suárez Cambre, Manuel; Carmona Galán, Ricardo; Brea Sánchez, Víctor Manuel; Río Fernández, Rocío del; Cabello, D.; Rodríguez Vázquez, Ángel Benito (Springer, 2016)
Image feature extraction is instrumental for most of the best-performing algorithms in computer vision. However, it is ...
Ponencia
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Effects of capacitors non-idealities in un-even split-capacitor array SAR ADCs

Fiorelli, Rafaella; Guerra Vinuesa, Oscar; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2016)
This paper studies the effects of capacitors non-idealities in the performance of un-even split-capacitor SAR ADCs. Also, ...
Patente
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Hardware para cómputo de la imagen integral

Río Fernández, Rocío del; Carmona Galán, Ricardo; Fernández Berni, Jorge; Rodríguez Vázquez, Ángel Benito (Oficina Española de Patentes y Marcas , 2015)
La presente invención, según se expresa en el enunciado de esta memoria descriptiva, consiste en hardware de señal mixta ...
Ponencia
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Real-time single-exposure ROI-driven HDR adaptation based on focal-plane reconfiguration

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Kleihorst, R.; Philips, Wilfried; Rodríguez Vázquez, Ángel Benito (Society of Photo-Optical Instrumentation Engineers, 2015)
This paper describes a prototype smart imager capable of adjusting the photo-integration time of multiple regions of ...
Artículo
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Bottom-up performance analysis of focal-plane mixed-signal hardware for Viola–Jones early vision tasks

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (John Wiley & Sons, 2015)
Focal-plane mixed-signal arrays have traditionally been designed according to the general claim that moderate accuracy in ...
Artículo
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High dynamic range adaptation for ROI tracking based on reconfigurable concurrent dual-sensing

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institution of Civil Engineers (Great Britain), 2014)
A single-exposure technique to extend the dynamic range of vision sensors is presented. It is particularly suitable for ...
Ponencia
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A QVGA Vision Sensor with Multi-functional Pixels for Focal-Plane Programmable Obfuscation

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2014)
Privacy awareness constitutes a critical aspect for smart camera networks. An ideal awless protection of sensitive information ...
Artículo
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Smart imaging for power-efficient extraction of Viola-Jones local descriptors

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Leñero Bardallo, Juan Antonio; Suárez Cambre, Manuel; Rodríguez Vázquez, Ángel Benito (Society of Photo-Optical Instrumentation Engineers, 2014)
In computer vision, local descriptors permit to summarize relevant visual cues through feature vectors. These vectors ...
Ponencia
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Demo: A Prototype Vision Sensor for Real-time Focal-plane Obfuscation through Tunable Pixelation

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Kleihorst, R.; Philips, Wilfried; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2014)
Privacy concerns are hindering the introduction of smart camera networks in prospective application scenarios like retail ...
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5×5 SPAD matrices for the study of the trade-offs between fill factor, dark count rate and crosstalk in the design of CMOS image sensors

Moreno García, Manuel; Río Fernández, Rocío del; Guerra Vinuesa, Oscar; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2014)
CMOS Single Photon Avalanche Diodes (SPADs) are a dedicated type of photodetectors that are attracting increasing interest. ...
Artículo
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Focal-plane sensing-processing: a power-efficient approach for the implementation of privacy-aware networked visual sensors

Fernández Berni, Jorge; Carmona Galán, Ricardo; Río Fernández, Rocío del; Kleihorst, Richard; Philips, Wilfried; Rodríguez Vázquez, Ángel Benito (MDPI, 2014)
The capture, processing and distribution of visual information is one of the major challenges for the paradigm of the ...
Ponencia
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CMOS SPADs selection, modeling and characterization towards image sensors implementation

Moreno García, Manuel; Guerra Vinuesa, Oscar; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2012)
The selection, modeling and characterization of Single Photon Avalanche Diodes (SPADs) are presented. Working with the ...
Ponencia
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Flexible ΣΔ modulators for multi-standard wireless transceivers: Novel architectures and circuit solutions

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Arranz, José María de la (2010)
Artículo
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Resonation-based hybrid continuous-time/discrete-time cascade ΣΔ modulators: application to 4G wireless telecom

Rosa Utrera, José Manuel de la; Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del (Society of Photo-Optical Instrumentation Engineers, 2009)
This paper presents innovative architectures of hybrid Continuous-Time/Discrete-Time (CT/DT) cascade ΣΔ Modulators (ΣΔMs) ...
Ponencia
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A new reconfigurable cascade ΣΔ modulator architecture with inter-stage resonation and no digital cancellation logic

Morgado García de la Polavieja, Alonso; García Sánchez, Gerardo; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (2009)
This paper presents a new two-stage cascade ΣΔ modula- tor architecture that uses inter-stage resonation to increase its ...
Artículo
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Resonation-based cascade ΣΔ modulator for broadband low-voltage A/D conversion

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (Institute of Electrical and Electronics Engineers, 2008)
cascades while presenting very relaxed output swing requirements and, subsequently, high robustness to non-linearities of ...
Ponencia
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La simulación eléctrica en el trabajo académicamente dirigido como vehículo docente para la enseñanza de la electrónica

Acosta Jiménez, Antonio José; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (2008)
La Electrónica es una disciplina versátil en cuanto a las metodologías y técnicas docentes que pueden emplearse. Frente a ...
Ponencia
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A novel low-voltage reconfigurable ΣΔ modulator for 4G wireless receivers

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (2008)
This paper presents a new adaptable cascade ΣΔ modulator architecture fo r low-voltage multi-stan- dard applications. It ...
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Design of a 130-nm CMOS Reconfigurable Cascade ΣΔ Modulator for GSM/UMTS/Bluetooth

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (Institute of Electrical and Electronics Engineers, 2007)
This paper reports a 130-nm CMOS programmable cascade ΣΔ modulator for multistandard wireless terminals, covering three ...
Artículo
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Novel topologies of cascade ΣΔ modulators for low-voltage wideband applications

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (2007)
This work presents two novel topologies of cascade ΣΔ modulators with unity signal transfer function that ...
Ponencia
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Resonation-based Cascade ΣΔ Modulators for High-Linearity Broadband A/D Conversion

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la (2007)
This paper presents two new architectures of cascade ΣΔ modulators that, based on the use of resonation, allow to increase ...
Artículo
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Cascade ΣΔ modulator for low-voltage wideband applications

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Arranz, José María de la (Institute of Electrical and Electronics Engineers, 2007)
A new cascade ΣΔ modulator architecture with unity signal transfer function is presented, which avoids the need for digital ...
Ponencia
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Reconfiguration of Cascade ΣΔ Modulators for Multistandard GSM/Bluetooth/UIMTS/WLAN Transceivers

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Fernández Fernández, Francisco Vidal; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2006)
This paper presents design considerations for cascade Sigma-Delta Modulators (ΣΔMs) included in multi-standard wireless ...
Ponencia
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Design Considerations for Multistandard Cascade ΣΔ Modulators

Morgado García de la Polavieja, Alonso; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (2005)
This paper discusses design considerations for cascade Sigma-Delta Modulators (ΣΔMs) included in multistandard wireless ...
Artículo
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A CMOS 110-dB@40-kS/s programmable-gain chopper-stabilized third-order 2-1 cascade sigma-selta modulator for low-power high-linearity automotive aensor ASICs

Rosa Utrera, José Manuel de la; Escalera Morón, Sara; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Guerra Vinuesa, Oscar; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2005)
This paper describes a 0.35-μm CMOS chopper-stabilized switched-capacitor 2-1 cascade ΣΔ modulator for automotive sensor ...
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A 0.13μm CMOS current steering D/A converter for PLC and VDSL applications

Ruiz Amaya, Jesús; Fernández Bootello, Juan Francisco; Rosa Utrera, José Manuel de la; Delgado Restituto, Manuel ; Río Fernández, Rocío del (2005)
This paper describes the design of a 12-bit 80MS/s Digital-to-Analog converter implemented in a 0.13μm CMOS logic technology. ...
Artículo
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High-level synthesis of switched-capacitor, switched-current and continuous-time ΣΔ modulators using SIMULINK-based time-domain behavioral models

Ruiz Amaya, Jesús; Rosa Utrera, José Manuel de la; Fernández Fernández, Francisco Vidal; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (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 ...
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An Embedded 12-bit 80MS/s A/D/A Interface for Power-Line Communications in 0.13μm Pure Digital CMOS Technology

Delgado Restituto, Manuel; Ruiz Amaya, Jesús; Rosa Utrera, José Manuel de la; Fernández Bootello, Juan Francisco; Díez Villar, Leila; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2005)
This paper presents an embedded interface, comprising both A/D and D/A converters, which has been implemented in a 0.13μm ...
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A 0.35 μm CMOS 17-bit@40-kS/s cascade 2-1 ΣΔ modulator with programmable gain and programmable chopper stabilization

Guerra Vinuesa, Oscar; Escalera Morón, Sara; Rosa Utrera, José Manuel de la; Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Rodríguez Vázquez, Ángel Benito (The International Society for Optical Engineering - SPIE, 2005)
This paper describes a 0.35μm CMOS chopper-stabilized Switched-Capacitor 2-1 cascade ΣDelta; modulator for automotive ...
Ponencia
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MATLAB/SIMULINK-Based High-Level Synthesis of Discrete-Time and Continuous-Time Sigma-Delta Modulators

Ruiz Amaya, Jesús; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Fernández Fernández, Francisco Vidal; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (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 ...
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A 0.35μm CMOS 17-bit@40kS/s Sensor A/D Interface Based on a Programmable-Gain Cascade 2-1 ΣΔ Modulator

García González, José Manuel; Escalera Morón, Sara; Rosa Utrera, José Manuel de la; Guerra Vinuesa, Oscar; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2004)
This paper describes the design and electrical implementation of an A/D interface for sensor applications realized in a ...
Ponencia
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An Optimization-based Tool for the High-Level Synthesis of Discrete-time and continuous-Time Sigma-Delta Modulators in the MATLAB/SIMULINK Environment

Ruiz Amaya, Jesús; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Fernández Fernández, Francisco Vidal; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2004)
This paper presents a MATLAB toolbox for the automated high-level sizing of ΣΔ Modulators (ΣΔMs) based on the combination ...
Artículo
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Highly Linear 2,5-V CMOS ΣΔ Modulator for ADSL+

Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Delgado Restituto, Manuel; Medeiro Hidalgo, Fernando; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2004)
We present a 90-dB spurious-free dynamic range sigma–delta modulator (ΣΔM) for asymmetric digital subscriber line applications ...
Tesis Doctoral
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Convertidores A/D sigma delta de altas prestaciones en tecnologías CMOS submicrométricas

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén (2004)
El trabajo desarrollado en esta Tesis pretende demostrar la viabilidad de implementar de forma robusta convertidores ...
Artículo
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Analysis of error mechanisms in switched-current Sigma-Delta modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Springer, 2004)
This paper presents a systematic analysis of the major switched-current (SI) errors and their influence on the performance ...
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Design Considerations for an Automotive Sensor Interface Sigma-Delta Modulator

Medeiro Hidalgo, Fernando; Rosa Utrera, José Manuel de la; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2003)
The Sigma-Delta Modulator presented in this paper contains a programmable-gain input inferface to accommodate the output ...
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Expandible high-order cascade ya modulator with constant, reduced systematic loss of resolution

Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (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 ...
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A SIMULINK-based approach for fast and precise simulation of switched-capacitor, switched-current and continuous-time /spl Sigma//spl Delta/ modulators

Moreno Reina, Javier; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Romay, Rafael; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (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/ ...
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A ΣΔ modulator for a programmable-gain, low-power, high-linearity automotive sensor interface

Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (The International Society for Optical Engineering - SPIE, 2003)
This paper describes the design and electrical implementation of a 0.35μm CMOS 17-bit≰0kS/s Sigma-Delta Modulator (ΣΔM) ...
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A 2.5-V CMOS Wideband Sigma-Delta Modulator

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2003)
A high-performance Sigma-Delta modulator for wireline communication applications is presenfed It employs a 4th-order cascade ...
Capítulo de Libro
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BandPass Sigma-Delta Analog-to-Digital Converters

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Springer, 2003)
The principle of ΣΔ Modulation (ΣΔM) is extended in BPΣΔMs to bandpass signals, especially but not only, with a narrow ...
Ponencia
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A 2.5-V ΣΔ modulator in 0.25-um CMOS for ADSL

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (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.
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Analysis and Experimental Characterization of Idle Tones in 2nd-Order Bandpass Sigma-Delta Modulators - A 0.8μm CMOS Switched-Current Case Study

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (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 ...
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Effect of Non-Linear Settling Error on The Harmonic Distortion of Fully-Differential Switched-Current BandPass Sigma-Delta Modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2001)
This paper presents a detailed study of the effect of the non-linear settling on the harmonic distortion of BandPass SD ...
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Analysis and Modeling of the Non-Linear Sampling Process in Switched-Current Circuits - Application to Bandpass Sigma-Delta Modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (2001)
This paper presents a precise model for the transient behaviour of Fully Differential (FD) SwItched-current (SI) memory ...
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High-performance ΣΔ ADC for ADSL applications in 0.35μm CMOS digital technology

Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2001)
We present a ΣΔ modulator designed for ADSL applications in a 0.3Sμm CMOS pure digital technology. It employs a 4th-order ...
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Study of Non-Linear S/H Operation in Switched-Current Circuits Using Volterra Series - Application to BandPass Sigma-Delta Modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (2001)
This paper analyses the transient behaviour of SwItched-current (SI) memory cells placed at the front-end of high-speed ...
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Top-Down Design of a xDSL 14-bit 4MSh ZA Modulator in Digital CMOS Technology

Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2001)
This paper describes the design of a Sigma-Delta modulator aimed for A/D conversion in xDSL applications, featuring ...
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Reliable analysis of settling errors in SC integrators-application to the design of high-speed /spl Sigma//spl Delta/ modulators

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2000)
This paper presents a detailed study on the transient response of SC integrators which takes into account the effects of ...
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Experimental Characterization of IdleTones in Second-Order Bandpass ΣΔ Modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (2000)
This paper analyses the tonal behaviour of the quantization noise in second-order bandpass ΣΔ modulators. The analysis ...
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A 14-bit 4-MS/s Multi-bit Cascade Sigma-Delta Modulator in CMOS 0.35-um Digital Technology

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (2000)
This paper presents a 4th-order 3-stage cascade SD modulator that achieves 14-bit dynamic range at 4MS/s using low ...
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High-order cascade multibit /spl Sigma//spl Delta/ modulators for xDSL applications

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (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 ...
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A CMOS 0.8- µm transistor-only 1.63-MHz switched-current bandpass ΣΔ modulator for AM signal A/D conversion

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 2000)
This paper presents a CMOS 0.8-/spl mu/m switched-current (SI) fourth-order bandpass /spl Sigma//spl Delta/ modulator ...
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Reliable analysis of settling errors in SC integrators - application to high-speed low-power ΣΔ modulators design

Río Fernández, Rocío del; Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Rodríguez Vázquez, Ángel Benito (1999)
This paper presents a detailed study on the transient response of SC integrators taking into account the effects of amplifier ...
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Harmonic Distortion in Fully-Differential Switched-Current Sigma-Delta Modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (1999)
This paper presents a systematic analysis of the harmonic distortion in SD modulators (SDMs) implemented with fully-differential ...
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Non-ideal quantization noise shaping in switched-current bandpass ΣΔ modulators

Rosa Utrera, José Manuel de la; Pérez Verdú, Belén; Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 1999)
This paper presents a systematic analysis of the major switched-current (SI) errors and their influence on the quantization ...
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Practical considerations for the design of cascade multi-bit high-frequency /spl Sigma//spl Delta/ modulators

Medeiro Hidalgo, Fernando; Río Fernández, Rocío del; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 1998)
Recommendations are given for efficient design of high-frequency /spl Sigma//spl Delta/ modulators using multi-stage ...
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High-order cascade multi-bit Σ∆ modulators for high-speed A/D conversion

Río Fernández, Rocío del; Medeiro Hidalgo, Fernando; Pérez Verdú, Belén; Rodríguez Vázquez, Ángel Benito (Universidad Carlos III, 1998)
The use of Sigma-Delta (Σ∆) modulation for analog-to-digital conversion (ADC) in the communication frequency range is ...
Artículo
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Robust high-accuracy high-speed continuous-time CMOS current comparator

Liñán Cembrano, Gustavo; Río Fernández, Rocío del; Domínguez Castro, Rafael; Rodríguez Vázquez, Ángel Benito (Institution of Engineering and Technology, 1997)
The authors present a CMOS current comparator which employs nonlinear negative feedback to obtain high-accuracy (down to ...
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A mismatch-insensitive high-accuracy high-speed continuous-time current comparator in low voltage CMOS

Río Fernández, Rocío del; Liñán Cembrano, Gustavo; Domínguez Castro, Rafael; Rodríguez Vázquez, Ángel Benito (Institute of Electrical and Electronics Engineers, 1997)
This paper presents a CMOS current comparator which employs nonlinear feedback to obtain high-accuracy (down to 1.5 pA) ...