Ezz El-Masry

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Jack Meador

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Rafal Dlugosz

Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy

Witold Pedrycz

University of Alberta

Giacomo Indiveri

University of Zurich, Switzerland

Ehsan Rahiminejad

Tomasz Talaska

Rafal Dlugosz

Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy

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Papers by Ezz El-Masry

Implementations of artificial neural networks using current-mode pulse width modulation technique

Neural Networks, IEEE …, 1997

The use of a current-mode pulse width modulation (CM-PWM) technique to implement analog artificia... more The use of a current-mode pulse width modulation (CM-PWM) technique to implement analog artificial neural networks (ANNs) is presented. This technique can be used to efficiently implement the weighted summation operation (WSO) that are required in the realization of a general ANN. The sigmoidal transformation is inherently performed by the nonlinear transconductance amplifier, which is a key component in the current integrator used in the realization of WSO. The CM-PWM implementation results in a minimum silicon area, and therefore is suitable for very large scale neural systems. Other pronounced features of the CM-PWM implementation are its easy programmability, electronically adjustable gains of neurons, and modular structures. In this paper, all the current-mode CMOS circuits (building blocks) required for the realization of CM-PWM ANNs are presented and simulated. Four modules for modular design of ANNs are introduced. Also, it is shown that the CM-PWM technique is an efficient ...

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Design and optimization of CMOS class-E power amplifier

Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03.

Page 1. Design and Optimization of CMOS Class-E Power Amplifier Zhan Xu and Ezz I. El-Masry Elect... more

A UHF continuous-time current-mode band-pass Delta Sigma Modulator based on active inductor

2008 51st Midwest Symposium on Circuits and Systems, 2008

Page 1. A UHF Continuous-Time Current-Mode Band-Pass Delta Sigma Modulator Based on Active Induct... more

Current-mode band-pass ladder filters using OTAs

International Journal of Electronics, 1998

Page 1. INT. J. ELECTRONICS, 1998, VOL. 85, NO. 1, 61±70 Current-mode band-pass ladder ®lters usi... more

Digital Extrapolation Beamforhing for Bandpass Signals

Applied signal processing, 1985

A 89dB Low-Power CMOS Σ∆ Modulator For Bluetooth Application

A Low Power Photo-Voltaic Battery Charger with Improved Reliability and Energy Recovery to Reduce Shading Effect

2022 IEEE Texas Power and Energy Conference (TPEC)

Micro-solar energy harvesting systems can operate efficiently at relatively high threshold lumina... more Micro-solar energy harvesting systems can operate efficiently at relatively high threshold luminance, and they exhibit 0% efficiency below threshold luminance or at strong shading. The objective of this paper is to introduce a new topology that improves the charge efficiency, functionality, sensitivity, and reliability of the Photo-Voltaic (PV) solar chargers during strong overcast while employing minimum hardware. The proposed topology responds to a wide range of solar irradiation and functions as an efficient charger with an improved battery charging current for slow charge topology at strong shading. It employs a boost converter with a second inductor and exploits the non-linearity of the PV characteristics of a solar cell to reduce power loss. To verify the proposed topology, a prototype, 1.4V/18mA charger, was built and successfully tested with 87.3% heavily sourced efficiency retained.

A novel highly linear 1 GHz switched-current sub-sampling mixer

1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96

A study of a CMOS sub-sampling RF mixer, based on the first generation switched-current track (SI... more A study of a CMOS sub-sampling RF mixer, based on the first generation switched-current track (SI) and hold cell, is presented. The use of SI circuits to realize highly integrated RF receivers presents some new and unique design opportunities. The paper discusses the advantages and disadvantages of the first and second generation SI cells for use as a sub-sampling mixer

A new approach of design of current-mode filters

International Symposium on Circuits and Systems, Jun 9, 1997

Page 1. 1997 IEEE International Symposium on Circuits and Systems, June 9-12,1997, Hong Kong A Ne... more

A novel low-voltage operational transconductance amplifier and its applications

2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353)

Page 1. ISCAS 2000 - IEEE International Symposium on Circuits and Systems, May 28-31, 2000, Genev... more

Novel high performance single amplifier biquads [voltage mode filters]

Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03.

Novel voltage mode filters based on a new architecture for a current feedback amplifier are propo... more Novel voltage mode filters based on a new architecture for a current feedback amplifier are proposed in this paper. The new biquads are attractive because they exhibit low Q- and ω0-variability due the constant bandwidth of the new amplifier used. Theoretical results as well as experimental results obtained using an AD844 and a 741 operational amplifier are presented.

A Low-Voltage High Linear Body-Driven Operational Transconductance Amplifier and Its Applications

2007 Canadian Conference on Electrical and Computer Engineering, 2007

... Lihong Zhang ECE, Faculty of Eng. &amp; Applied Sci. Memorial Univ. of Newfoundland St. J... more

New fully balanced log-domain integrators

ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187)

Page 1. NEW FULLY BALANCED LOG-DOMAIN INTEGRATORS Jie Wu and Ezz I. El-Masry Electrical and Compu... more

General first and second order current-mode building blocks

Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94

Page 1. 385 General First and Second Order Current-Mode Building Blocks John Gates, Eu. I. El-Mas... more

An 89dB low-power CMOS ΣΔ modulator for Bluetooth application

2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)

Page 1. A 89dB Low-Power CMOS Σ∆ Modulator For Bluetooth Application Haibin Huang and Ezz I. El-M... more

Tunable matching networks for future MEMS-based transceivers

2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)

TUNABLE MATCHING NETWORKS FOR FUTURE MEMS-BASED TRANSCEIVERS Amro M. Elshurafa and Ezz I. El-Masr... more

The effects of parasitics on distributed high-pass MOSFET filters

1991., IEEE International Sympoisum on Circuits and Systems

Page 1. The Effects of Parasitics on Distributed High-Pass MOSFET Filters Wei Li and Ezz I. El-Ma... more

Hardware realization of analog CMOS current-mode minimum circuit

Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109)

... It always needs an A/D (DIA) interface for input (output) to deal with real-time problems, Th... more

Current-mode implementation of discrete-time cellular neural networks using the pulse width modulation technique

Proceedings of 1994 37th Midwest Symposium on Circuits and Systems

Page 1. Current-Mode Implementation of Discrete-Time Cellular Neural Networks Using the Pulse Wid... more

A novel 3-in-1 MEMS variable capacitance device with a customizable tuning range

2009 4th International Design and Test Workshop (IDT), 2009

This paper presents a new category of MEMS variable capacitance devices which can provide a speci... more This paper presents a new category of MEMS variable capacitance devices which can provide a specific tuning range tailored to the specific application being considered. Depending on the tuning range chosen, this device can play the role of a variable capacitor, a switched capacitor, or a switch. The proposed structure can provide theoretical tuning ranges anywhere from 4.9 to 35 with a simple, yet effective, layout modification as opposed to previously reported devices where the tuning range is fixed and cannot be varied. Three variations of the variable capacitance device were fabricated as proof-ofconcept prototypes in the PolyMUMPS process to verify the theoretical analysis, and measurement results showed tuning ranges of 3, 3.4, and 4.4 respectively, confirming our theoretical analysis.