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Maher Kayal

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Publications associées (165)

A 32kHz crystal oscillator leveraging voltage scaling in an ultra-low power 40nA real-time clock

Luca Rossi, Maher Kayal, François Krummenacher, Mathieu Yves Hervé Coustans

In this paper, an ultra-low power consumption crystal oscillator embedded in an RTC module (ASIC and its crystal resonator) is presented. The technique leverages oscillation amplitude and loads capacitance scaling; it incorporates transistor level merging ...

IEEE2018

A 9-decade current to frequency converter with active leakage compensation

Maher Kayal, François Krummenacher, Daniel Perrin, Evgenia Voulgari

2017

Variability of Low Frequency Noise and mismatch in CORNER DOPED and standard CMOS technology

Matthias Bucher, Christian Enz, Maher Kayal, François Krummenacher, Farzan Jazaeri, Mathieu Yves Hervé Coustans

IEEE2017

Towards the next generation of intelligent building: An assessment study of current automation and future IoT based systems with a proposal for transitional design

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

The intelligent building, a major smart city research and development domain, has grown beyond the scope of automation, currently focusing on the occupant centered approaches and the ancillary services offered to the power grid. The Internet of Things (IoT ...

Elsevier Science Bv2017

Event-driven Human Based Evolutionary Knowledge Base for Smart Buildings

Maher Kayal, Nastaran Asadi Zanjani

This paper presents an approach to automatically create a knowledge base for smart buildings and let it dynamically evolve based on the behaviors of the occupants inside. Such a knowledge base compromises all life-style experiences and intelligent building ...

Ieee2016

Think Energy Efficiency the Energy Book for Building Human Interaction

Maher Kayal, Nastaran Asadi Zanjani, Alexandre Ringwald

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

GeoAware: A Hybrid Indoor and Outdoor Localization Agent for Smart Buildings

Maher Kayal, Georgios Lilis, Adrien Guillaume Olivier Hoffet

Localizing, identifying and authenticating the individual occupants is of paramount importance for the future intelligent buildings. Although the performance of outdoor positioning systems is sufficiently good, the indoor ones have still to converge to a u ...

Ieee2016

A nA Crystal - Less Oscillator for Internet of Things

Maher Kayal, François Krummenacher, Mathieu Yves Hervé Coustans

This work presents an ultra-low power oscillator designed to target different contexts, such as crystal-assisted time keeping, reference oscillator to optimize the always on domain of a microcontroller or wake-up timer. This oscillator enables ultra-low po ...

Ieee2016

Simulation, Analysis, and Verification of Substrate Currents for Layout Optimization of Smart Power ICs

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

Today circuit failures in Smart Power ICs due to substrate couplings are partially addressed during the circuit design phase. The state-of-the-art guidelines for the optimization of parasitic couplings provide mainly qualitative rules, which are difficult ...

Institute of Electrical and Electronics Engineers2016

A 400 fJ Per-Cycle Frequency Reference for Internet of Things

Maher Kayal, François Krummenacher, Mathieu Yves Hervé Coustans

2016

Building Virtualization Engine: a Novel Approach Based on Discrete Event Simulation

Maher Kayal, Georgios Lilis, Olivier Valentin Henri Van Cutsem

This paper proposes and validates a Discrete Event Simulation (DES) engine for the Smart-Building (SB). It strives to virtualize the common elements found within it and integrates them transparently to an existing Building Management System (BMS), along wi ...

Ieee2016

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

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

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

JouleSense: A Simulation based Platform for Proactive Feedback on Building Occupants' Energy Use

Maher Kayal, Georgios Lilis, Shubham Bansal

A significant amount of energy in the buildings can be saved by inducing efficient occupant behavior. The occupant's awareness tools that have been shown to be effective in achieving energy efficiency gains depend on various computational and estimation al ...

Scitepress2016

Analysis of Substrate Currents Propagation in HVCMOS technology

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

This work reports the results of a layout-aware substrate modeling methodology for HVCMOS technologies. The model relies on the extraction of parasitic substrate network to simulate with circuit software parasitic lateral NPN bipolar transistors with multi ...

IEEE2016

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

Computing the Impact of White and Flicker Noise in Continuous-Time Integrator-Based ADCs

Maher Kayal, Adil Koukab, Paul Stanislas Gosselin

From first-order incremental Sigma Delta converters to controlled-oscillator-based converters, many ADC architectures are based on the continuous-time integration of the input signal. However, the accuracy of such converters cannot be properly estimated wi ...

Ieee2016

OTA-C based high-speed analog processing for real-time fault location in electrical power networks

Maher Kayal, François Krummenacher, François Pierre Gaugaz

This paper explores the potential and limitations of analog integrated circuit techniques for the simulation of low-loss or lossless 1D or 2D transmission mediums. In this approach, a transmission line is mapped into a ladder consisting of N identical LC e ...

Springer Verlag2016

Methodology for 3-D Substrate Network Extraction for SPICE Simulation of Parasitic Currents in Smart Power ICs

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

A 3-D simulation of substrate currents is crucial to analyze parasitic coupling effects due to minority carrier injection in smart power ICs. In this paper, a substrate parasitic extraction methodology is introduced by dividing the IC layout into elementar ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Active Guard Ring Characterization for Smart Power ICs

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

This paper shows SPICE simulation results of active guard ring structures which are typically employed in Smart Power ICs. Active guard rings act as barriers limiting the flow of minority carriers injected into the substrate toward sensitive circuits. The ...

Ieee2016

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

Maher Kayal, Fabrizio Lo Conte, Laurent Fabre, Thierry Barras

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

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