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Maher Kayal

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Publications associées (162)

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Calculateur analogique faible consommation dédié au calcul transitoire des réseaux électriques

Maher Kayal, Sidi-Rachid Cherkaoui, Laurent Fabre, Ira Nagel

2009

Génération du layout de circuits intégrés analogiques assistée par ordinateur

Maher Kayal

EPFL1989

Hall effect sensors performance investigation using three-dimensional simulations

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

Several Hall effect sensors were modeled and evaluated regarding the Hall voltage and sensitivity using 3D physical simulations. For accurate results the numerical offset and its temperature drift were analyzed. The versatility of the simulation allows var ...

2011

A dynamic operation of a PIN photodiode

Maher Kayal, Alexander Tagantsev, Marc Pastre, Adil Koukab, Maxim Gureev, Serguei Okhonin, Denis Sallin, Alexander Kvasov

Traditionally, photodiodes operate at static reverse bias, and incident light intensity is obtained from the relatively week photocurrent. In this paper, we introduce a different concept of photodiode function: the photodiode is used in a dynamic regime wh ...

American Institute of Physics2015

A 0.8V 2.4GHz 1Mb/s GFSK RF transceiver with on-chip DC-DC converter in a standard 0.18µm CMOS technology

Pierre-André Farine, Maher Kayal, Steve Tanner

A low-energy 2.4GHz RF transceiver supporting 1Mb/s Gaussian Frequency-Shift Keying modulation and designed to run on a 1.5V battery is implemented in a standard 0.18μm CMOS technology. The integrated DC-DC converter can provide up to 100mA to an external ...

IEEE2010

SOI digital pixel sensor based on charge pumping

Maher Kayal, Jean-Michel Sallese

In this paper, a digital pixel sensor in SOl is presented. The active part is a partially depleted Sol phototransistor. The technique elaborated in [I] was designed and implemented. Moreover, we took advantage of some of the characteristics of the floating ...

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

Think Energy Efficiency the Energy Book for Building Human Interaction

Maher Kayal, Nastaran Asadi Zanjani

This paper strives to assemble consumers and providers of energy in a web platform. The goal is to highlight energy consumption of each user to push them to decrease their consumption. All the work is concentrated on a main concept key: to motivate populat ...

Ieee2016

Design methodology based on the analog blocks retargeting from bulk to FD SOI using EKV model

Maher Kayal

This paper presents a methodology of a basic analog blocks retargeting from bulk to fully depleted (FD) SOI technology. The design methodology is generally not related to the model used for the circuit simulations. However, the proposed one is closely link ...

2006

A Self-Regulating Oscillator for Sensor Operation of Nanoelectromechanical Systems

Maher Kayal, Marc Pastre, Christian Kauth

A closed-loop oscillator topology is proposed for dynamic sensor operation of nanoelectromechanical systems, benefiting from the structure's quality factor. Automatic adaptation to diverse sensors' properties is achieved via a self-regulating phase-locked ...

Ieee2013

Spice-compatible modeling of high injection and propagation of minority carriers in the substrate of Smart Power ICs

Maher Kayal, Jean-Michel Sallese, Camillo Stefanucci, Pietro Buccella

Classical substrate noise analysis considers the silicon resistivity of an integrated circuit only as doping dependent besides neglecting diffusion currents as well. In power circuits minority carriers are injected into the substrate and propagate by drift ...

Elsevier2015

A low-power strategy for delta-sigma modulators

Maher Kayal, Danica Stefanovic

This paper presents a hybrid continuous-discrete-time Delta-Sigma modulator for portable communication systems following a low-power strategy. The proposed design methodology is extendable to different specifications. A multi-bit technique has been introdu ...

2007

On-chip Mass Sensing at the Physical Limits of Nanoelectromechanical Systems

Maher Kayal, Marc Pastre, Christian Kauth

A tunable and self-regulating on-chip carbon nanotube based mass balance is presented for small-size and low-cost environmental and healthcare applications. Tube stretching and a phase-locked loop topology make the system widely universal and invariant to ...

Ieee2013

Design and Measurement Methodology for a Sub-picoampere Current Digitiser

Maher Kayal, François Krummenacher, Evgenia Voulgari

This paper introduces some design and measurement techniques that were used in the design and the testing of an ASIC for ultra-low current sensing. The idea behind this paper is to present the limitations in sub-picoampere current measurements and demonstr ...

Ieee2015

6. MEMS based color-VGA micro-projector system

Maher Kayal, Laurent Fabre, Nicolas Abelé, Fabrizio Lo Conte, Didier Raboud

This paper presents a complete portable laser-based projection system using twofold of one dimensional magnetic actuated MEMS linear scanning micro-mirrors. Dedicated high speed electronics was developed to drive the MEMS, detect the mirror scanning positi ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2010

Impact of enhanced contact doping on minority carriers diffusion currents

Maher Kayal, Jean-Michel Sallese, Camillo Stefanucci, Pietro Buccella

Minority carriers diffusion currents are particularly important in parasitic substrate couplings of Smart Power ICs. In CMOS technologies the P-substrate potential is imposed by P+ contacts and N-wells by N+ highly doped implantations. The doping concentra ...

IEEE2014

Transient charge pumping as a new technique for a higher sensitivity SOI MOSFET photodetector

Maher Kayal, Jean-Michel Sallese

In this paper, we have used the partially depleted SOI MOSFET to measure the intensity of light. The charge pumping technique was used to get rid of the photogenerated carriers in the body in an attempt to keep the drain current constant. Using this techni ...

2008

Inversion factor based design methodology using the EKV MOS model

Maher Kayal, Marc Pastre, Andrea Ajbl

This paper presents a hierarchical design methodology based on the inversion factor (IF) as a key design parameter and the equations of the EKV MOS Model. A structured design approach is used to allow high flexibility. The efficiency of the methodology is ...

2011

Modeling methodology of high-voltage substrate minority and majority carrier injections

Maher Kayal, Jean-Michel Sallese, Fabrizio Lo Conte

This paper presents a modeling methodology for substrate current coupling mechanisms. An enhanced model of the diode ensuring continuity of minority carriers is used to build an equivalent schematic, accounting for minority and majority carrier propagation ...

2010

A Hall Sensor-Based Current Measurement Microsystem with Continuous Gain Calibration

Maher Kayal, Marc Pastre

A novel technique for the continuous calibration of the sensitivity of Hall sensors is presented. Using an integrated coil and a new modulation/demodulation scheme, the sensitivity is measured and its drift eliminated. The obtained thermal drift is 50 ppm/ ...

2005

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 model is based on a new compact model o ...

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