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Linear Current-Mode Active Pixel Sensor (with Ralf M. Philipp, David Orr, Viktor Gruev, and Ralph Etienne-Cummings), Departmental Papers (ESE) (2007)
A current mode CMOS active pixel sensor (APS) providing linear light-to-current conversion with inherently low...
A Spectral Conversion Approach to Single-Channel Speech Enhancement (with Athanasios Mouchtaris, Paul Mueller, and Panagiotis Tsakalides), Departmental Papers (ESE) (2007)
In this paper, a novel method for single-channel speech enhancement is proposed, which is based...
Cort-X II: Low Power Element Design of a Large-Scale Spatio-Temporaral Pattern Clustering System (with Jie Yuan, Ning Song, and Nabil H. Farhat), Departmental Papers (ESE) (2007)
Complex spatio-temporal patterns can be clustered using a network of parametrically coupled logistic maps. This...
Low Fixed Pattern Noise Current-mode Imager Using Velocity Saturated Readout Transistors (with Zheng Yang and Viktor Gruev), Departmental Papers (ESE) (2007)
This paper described a novel current-mode active pixel sensor (APS) imager. Conversion of photodiode voltage...
Two Transistor Current Mode Active Pixel Sensor (with Viktor Gruev, Zheng Yang, and Ralph Etienne-Cummings), Departmental Papers (ESE) (2007)
A novel current mode active pixel sensor for high resolution imaging is presented. The photo...
Fabrication of a Dual-Tier Thin Film Micro Polarization Array (with Viktor Gruev, Alessandro Ortu, Nathan Lazarus, and Nader Engheta), Departmental Papers (ESE) (2007)
A thin film polarization filter has been patterned and etched using reactive ion etching (RIE)...
A CMOS Linear Voltage/Current Dual-Mode Imager (with Zheng Yang and Viktor Gruev), Departmental Papers (ESE) (2006)
We present a CMOS image sensor capable of both voltage- and current-mode operations. Each pixel...
A CMOS Monolithic Implementation of a Nonlinear Element for Arbitrary 1-D Map Generation (with Jie Yuan and Nabil H. Farhat), Departmental Papers (ESE) (2006)
In a macroscopic approach, a single-chip cortical patch is designed based on a the model...
A CMOS Monolithic Implementation of a Nonliniear Interconnection Module for a Corticonic Network (with Jie Yuan and Nabil H. Farhat), Departmental Papers (ESE) (2006)
A nonlinear interconnection module for a corticonic network is designed and fabricated in a 0.6µm...
Image Sensor with Focal Plane Extraction of Polarimetric Information (with Viktor Gruev and Nader Engheta), Departmental Papers (ESE) (2006)
A novel focal plane imaging sensor capable of real time extraction of polarization information is...
Image Sensor with General Spatial Processing in a 3D Integrated Circuit Technology (with Viktor Gruev, Ralf M. Philipp, and Ralph Etienne-Cummings), Departmental Papers (ESE) (2006)
An architectural overview of an image sensor with general spatial processing capabilities on the focal...
Nonparallel Training for Voice Conversion Based on a Parameter Adaptation Approach (with Athanasios Mouchtaris and Paul Mueller), Departmental Papers (ESE) (2006)
The objective of voice conversion algorithms is to modify the speech by a particular source...
A CMOS image processing sensor for the detection of image features (with Masatoshi Nishimura), Departmental Papers (ESE) (2005)
A compact CMOS vision sensor for the detection of higher level image features, such as...
Combined Software/Hardware Implementation of a Filterbank Front-End for Speech Recognition (with Athanasios Mouchtaris, Yuan Cao, Shehzad Khan, and Paul Mueller), Departmental Papers (ESE) (2005)
In this paper, a cost-effective implementation of a programmable filterbank front-end for speech recognition is...
A Spectral Conversion Approach to Feature Denoising and Speech Enhancement (with A. Mouchtaris, P. Mueller, and P. Tsakalides), Departmental Papers (ESE) (2005)
In this paper we demonstrate that spectral conversion can be successfully applied to the speech...
Extrapolating Analog-to-Digital Converter (with Zheng Yang), Departmental Papers (ESE) (2005)
We propose a new type of oversampled analog-to-digital converter. It uses digital extrapolators to predict...
GBOPCAD: A Synthesis Tool for High-Performance Gain-Boosted Opamp Design (with Jie Yuan and Nabil H. Farhat), Departmental Papers (ESE) (2005)
A systematic design methodology for high-performance gain-boosted opamps (GBOs) is presented. The methodology allows the...
A Spectral Conversion Approach to the Iterative Wiener Filter for Speech Enhancement (with Athanasios Mouchtaris and Paul Mueller), Departmental Papers (ESE) (2004)
The Iterative Wiener Filter (IWF) for speech enhancement in additive noise is an effective and...
Non-Parallel Training for Voice Conversion by Maximum Likelihood Constrained Adaptation (with Athanasios Mouchtaris and Paul Mueller), Departmental Papers (ESE) (2004)
The objective of voice conversion methods is to modify the speech characteristics of a particular...
Biologically Inspired Vision Sensor for the Detection of Higher-Level Image Features (with M. Nishimura), Departmental Papers (ESE) (2003)
The paper briefly reviews certain aspects of the biological visual system and presents a smart...
Mixed-Signal Calibration of Pipelined Analog-Digital Converters (with Sameer R. Sonkusale), Departmental Papers (ESE) (2003)
Least-Mean-Squares (LMS) based mixed-signal scheme for self-calibration of pipelined Analog-Digital Converter (ADC) is proposed. The...
A Fully Integrated CMOS Phase-Locked Loop With 30MHz to 2GHz Locking Range and ±35 ps Jitter (with Chao Xu, Winslow Sargeant, and Kenneth R. Laker), Departmental Papers (ESE) (2003)
A fully integrated phase-locked loop (PLL) fabricated in a 0.24μm, 2.5v digital CMOS technology is...
An Extended Frequency Range CMOS Voltage-Controlled Oscillator (with Chao Xu, Winslow Sargeant, and Kenneth R. Laker), Departmental Papers (ESE) (2002)
This paper presents an extended frequency range CMOS monolithic voltage-controlled oscillator (VCO) design. A negative...
Using Web-Based Technology in Laboratory Instruction to Reduce Costs (with Rita M. Powell, Helen Anderson, and David P. Pope), Departmental Papers (ESE) (2002)
The authors report the results of a project to reemphasize high quality, hands-on laboratory courses...
Robust Auditory-Based Speech Processing Using the Average Localized Synchrony Detection (with Ahmed M. Abdellaty Ali and Paul Mueller), Departmental Papers (ESE) (2002)
In this paper, a new auditory-based speech processing system based on the biologically rooted property...
A Low Distortion MOS Sampling Circuit (with Sameer R. Sonkusale), Departmental Papers (ESE) (2002)
This paper presents a sampling technique with reduced distortion for use in a sample-and-hold circuit...
Analysis of Clock Buffer Phase Noise (with Chao Xu, Frank Barber, and Kenneth R. Laker), Departmental Papers (ESE) (2002)
This paper presents a phase noise model for clock buffers. The model can be used...
Acoustic-Phonetic Features for the Automatic Classification of Stop Consonants (with Ahmed M. Abdelatty Ali and Paul Mueller), Departmental Papers (ESE) (2001)
In this paper, the acoustic–phonetic characteristics of American English stop consonants are investigated. Features studied...
Fully Integrated CMOS Phase-Locked Loop With 30MHz to 2GHz Locking Range and +-35ps Jitter (with Chao Xu, Winslow Sargeant, and Kenneth R. Laker), Departmental Papers (ESE) (2001)
A fully integrated phase-locked loop (PLL) fabricated in a 0.24 micrometer, 2.5v digital CMOS technology...
Robust Classification of Stop Consonants Using Auditory-Based Speech Processing (with Ahmed M. Abdelatty Ali and Paul Mueller), Departmental Papers (ESE) (2001)
In this work, a feature-based system for the automatic classification of stop consonants, in speaker...
Background Digital Error Correction Technique for Pipelined Analog-Digital Converters (with Sameer R. Sonkusale and K. Nagaraj), Departmental Papers (ESE) (2001)
This paper describes a technique for digital error correction in pipelined analog-digital converters. It makes...
A 1.2 V, 38 microW Second-Order DeltaSigma Modulator with Signal Adaptive Control Architecture (with Qunying Li and Kenneth R. Laker), Departmental Papers (ESE) (2001)
A 1.2 V, 38 μW second-order ΔΣ modulator (ΔΣM) with a Signal Adaptive Control (SAC)...
Auditory-based speech processing based on the average localized synchrony detection (with Ahmed M. Abdelatty Ali and Paul Mueller), Departmental Papers (ESE) (2000)
In this paper, a new auditory-based speech processing system based on the biologically rooted property...
A Foveated Silicon Retina for Two-Dimensional Tracking (with Ralph Etienne-Cummings, Paul Mueller, and Mao-zhu Zhang), Departmental Papers (ESE) (2000)
A silicon retina chip with a central foveal region for smooth-pursuit tracking and a peripheral...
Hardware Implementation of a Visual-Motion Pixel Using Oriented Spatiotemporal Neural Filters (with Ralph Etienne-Cummings and Paul Mueller), Departmental Papers (ESE) (1999)
A pixel for measuring two-dimensional (2-D) visual motion with two one-dimensional (1-D) detectors has been...
A Focal Plane Visual Motion Measurement Sensor (with Ralph Etienne-Cummings and Paul Mueller), Departmental Papers (ESE) (1997)
A motion detection algorithm, based on biological and computational models, for focal plane implementation has...
An Overview of Sigma-Delta Converters: How a 1-bit ADC achieves more than 16-bit resolution (with Pervez M. Aziz and Henrik V. Sorensen), Departmental Papers (ESE) (1996)
This article briefly describes conventional A/D conversion, as well as its performance modeling. We then...
Analytical and Experimental Studies of Thermal Noise in MOSFET's (with Suharli Tedja and Hugh H. Williams), Departmental Papers (ESE) (1994)
An analysis of the channel thermal noise in MOSFET's, based on the one-dimensional charge sheet...
A CMOS Time to Digital Converter IC with 2 Level Analog CAM (with Eric J. Gerds, Rick Van Berg, Hugh H. Williams, L. Callewaert, W. Eyckmans, and Willy Sansen), Departmental Papers (ESE) (1994)
A time to charge converter IC with an analog memory unit (TCCAMU) has been designed...
An Analog Neural Computer with Modular Architecture for Real-Time Dynamic Computations (with Paul Mueller, David Blackman, Peter Chance, Christopher Donham, Ralph Etienne-Cummings, and Peter Kinget), Departmental Papers (ESE) (1992)
The paper describes a multichip analog parallel neural network whose architecture, neuron characteristics, synaptic connections,...