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Maher Kayal

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Related publications (162)

Page 3 of 9

Pipelined Numerical Integration on Reduced Accuracy Architectures for Power System Transient Simulations

Maher Kayal, Sidi-Rachid Cherkaoui, Georgios Lilis, Guillaume Olivier Lanz, Theodoros Kyriakidis

This work concerns a dedicated mixed-signal power system dynamic simulator. The equations that describe the behavior of a power system can be decoupled in a large linear system that is handled by the analog part of the hardware, and a set of differential e ...

IEEE2014

Offset And Drift Analysis Of The Hall Effect Sensors. The Geometrical Parameters Influence

Maher Kayal, Jean-Michel Sallese, Maria-Alexandra Paun

Several Hall sensor configurations have been integrated in CMOS 0.35 mu m technology and analyzed in terms of offset at room temperature and offset drift. We searched for the best geometry that would minimize the offset and its corresponding drift. The tar ...

Inst Materials Physics2012

Silicon-on-Insulator Technology for Bioluminescence Imaging and Application to a Switching Photodetector

Maher Kayal, Adil Koukab, Denis Sallin

This paper analyzes some advantages of Silicon-on-Insulator (SOI) based photodetectors for bioluminescence imaging. It shows that SOI based sensors not only solve the bulk carriers problem, it can also act as a very selective spectral filter by acting as a ...

Ieee2015

Implementation Guidelines for a Real-Time Fault Location System in Electrical Power Networks

Maher Kayal, François Krummenacher, François Pierre Gaugaz

This paper presents constraints involved in the microelectronic implementation of a transmission line model based on transconductor-capacitor (gm-C) topologies. The presented line model, based on the discretization of a transmission line into a finite numb ...

Ieee2016

A frequency-tunable impedance matching network based on coupled inductors for RF power amplifiers

Maher Kayal

In this paper we present an RF PA employing an output impedance matching network of the pi-type, where an inductor is variable. In order to implement this tunable inductor, the coupled-inductor technique [1] is used. Although other techniques for inductor ...

2008

Reducing the number of comparators in multi-bit ΔΣ modulators

Maher Kayal

Multi-bit feedback, being one way of lowering ΔΣ modulators power consumption, has a major obstacle: the number of components in the internal analog-to-digital converter (ADC) and digital-to-analog converter (DAC). Nevertheless, the number of comparators i ...

2008

An Event-driven Low Power Electronics for Loads Metering and Control in Smart Buildings

Maher Kayal, Georgios Lilis, Gilbert Didier Francis Conus, Nastaran Asadi Zanjani

The Internet of Things market is experiencing a period of intense growth. From 7 to 10 billion of connected devices in 2013, it is expected to reach 26 to 30 billion in 2020. Smart buildings represent between 2 to 21% of this market. Indeed, the possibilit ...

Ieee2016

A Dual-Edge Pulsewidth Modulator for Fast Dynamic Response DC-DC Converters

Maher Kayal, Adil Koukab, Giacomo Ripamonti

Voltage regulator modules are dc-dc converters that power modern microprocessors. They must exhibit a fast dynamic response, in order to achieve satisfactory regulation performance in spite of the rapid load current variations. The pulsewidth modulator is ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

DRAM Based on Hysteresis in Impact Ionization Single-Transistor-Latch

Mihai Adrian Ionescu, Maher Kayal, Didier Bouvet, Kirsten Emilie Moselund, Vincent Pott, Cédric Meinen

This work reports on memory applications of punch-through impact ionization single-transistor latch (PIMOS), showing abrupt current switching (3-10mV/dec.) as well as hysteresis in both ID(VDS) and ID(VGS). A capacitor-less 1PIMOS - 1 MOSFET DRAM memory is ...

2008

Double gate movable body Micro-Electro-Mechanical FET as hysteretic switch: Application to data transmission systems

Mihai Adrian Ionescu, Maher Kayal, Hüseyin Cumhur Tekin, Cédric Meinen

This paper reports on the fabrication, experimental characterization and data transmission application of a double-gate movable body FET. As its name suggests, the proposed movable-body Micro-Electro-Mechanical FET (MB-MEMFET) is a hybrid MEMS-semiconducto ...

2008

Air core inductors study for DC/DC power supply in harsh radiation environment

Maher Kayal

In high energy physics and space applications it becomes mandatory to solve specific problems concerning the power supply. In both cases, it exists a harsh radiation environment and the presence of external electromagnetic perturbations. The former prevent ...

2008

A Hall sensor analog front end for current measurement with continuous gain calibration

Maher Kayal, Marc Pastre

This paper presents a new technique for continuously calibrating the sensitivity of a current measurement microsystem based on a Hall magnetic field sensor. An integrated reference coil generates a magnetic field for calibration. Using a variant of the cho ...

2007

A Fully Integrated 60 mV Cold-Start Circuit for Single Coil DC-DC Boost Converter for Thermoelectric Energy Harvesting

Maher Kayal, François Krummenacher, Mathieu Yves Hervé Coustans

Harvesting energy from ambient energy sources, such as thermal gradients is one solution to address the dramatic increase in energy consumption of personal electronics. While in the field, energy abundantly available in form of heat. The use of primary cel ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Distributed Intelligent Modules System Using Power-line Communication for Electrical Appliance Automation

Maher Kayal, Laurent Fabre, Fabrizio Lo Conte

In a first aspect the invention provides a system that comprising a plurality of electronic modules, each one of the electronic modules configured for enabling automation of an electrical appliance to be connected to the electronic module. Each electronic ...

2016

A DC power flow extension

Maher Kayal, Sidi-Rachid Cherkaoui, Theodoros Kyriakidis

In this work an extension of the well-known DC power flow method is presented. A normal DC power flow of the system is executed to determine voltage angles and a novel derivation of voltage amplitudes is devised. The latter is rigorously formulated and eig ...

IEEE2013

High-quality factor MEMS based oscillator: Silicon 9 MHz oscillator with low phase noise and high quality factor

Mihai Adrian Ionescu, Maher Kayal, Fabrizio Lo Conte

In this paper, an oscillator based on a Vibrating Body Field Effect Transistor (VB-FET) working at 9.4MHz is presented. The electrical characteristics of this active MEM resonator are detailed for static and dynamic operation. The benefit of the intrinsic ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

MOS-PN Hybrid Device With Minimum Dark Current for Sensitive Digital Photodetection

Maher Kayal, Adil Koukab, Denis Sallin

This letter presents a CMOS-compatible photodetector displaying direct light-to-time conversion and intrinsic charge integration with a very low dark current. This device is particularly adapted for applications requiring high sensitivity such as biolumine ...

Institute of Electrical and Electronics Engineers2014

Global modeling strategy of parasitic coupled currents induced by minority-carrier propagation in semiconductor substrates

Maher Kayal, Jean-Michel Sallese, François Krummenacher, Marc Pastre, Fabrizio Lo Conte

This paper presents a modeling strategy to simulate the propagation of electrical perturbations induced by direct biasing of substrate junctions. Usually, this is done by identifying parasitic substrate devices such as bipolar transistors. However, mapping ...

2010

Tunable floating active inductor with internal offset reduction

Maher Kayal, Sidi-Rachid Cherkaoui, François Krummenacher, Marc Pastre, Laurent Fabre, Ira Nagel

Presented is a transistor-level implementation of a floating and tunable CMOS active inductor. It is based on the classical gyrator-C topology and is enhanced by adding an internal offset reduction mechanism to guarantee functionality also for unbalanced D ...

2012

A circuit-level substrate current model for smart-power ICs

Maher Kayal, Jean-Michel Sallese, François Krummenacher, Marc Pastre, Fabrizio Lo Conte

This paper presents a new modeling methodology accounting for generation and propagation of minority carriers that can be used directly in circuit-level simulators in order to estimate coupled parasitic currents. The method is based on a new compact model ...

Institute of Electrical and Electronics Engineers2010