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Concept

Integrator

Publications associées (17)

A Prony-based approach for accelerating the lightning electromagnetic fields computation above a perfectly conducting ground

Farhad Rachidi-Haeri, Marcos Rubinstein

Lightning strikes can seriously affect the reliability and availability of electrical infrastructures. The computation of lightning-electromagnetic fields represents one of the most crucial steps in the evaluation of the induced effects; thus, having at di ...

Elsevier2022

A CMOS Analog Front-End for Implantable Pulmonary Artery Pressure Monitoring System

Marco Mattavelli, Catherine Dehollain, Diego Ruben Barrettino, Kerim Türe, Mustafa Besirli

This paper presents an energy-efficient analog front-end circuit to monitor the pulmonary artery pressure (PAP) with piezoresistive pressure sensors. A low-power capacitively-coupled instrumentation amplifier (CCIA) is developed in order to boost the ampli ...

IEEE2019

Design of an Energy-Efficient Current-to-Frequency Converter for a Wearable Sensor Platform

Maher Kayal, François Krummenacher, Evgenia Voulgari

This paper presents the design of the ANTIGONE ASIC in AMS 0.35 mu m technology that interfaces with ion-sensitive field effect transistors (ISFETs) to detect biomarkers like pH, Na+ and K+ in human sweat. The ISFET sensors generate a low current dc signal ...

IEEE2019

A high sensitivity low-power capacitive front-end for insulin injection pens

Maher Kayal, François Krummenacher, Jean-Baptiste Robert Orhan, François Pierre Gaugaz

A low-power 14-bits first order incremental Analog-to-Digital Converter (ADC) is presented. Based on the charge balancing principle, this switched-capacitor (SC) circuit integrates the input signal multiple times to reach the targeted resolution, linearity ...

ELSEVIER SCI LTD2019

Multiport Energy Gateway

Yan-Kim Tran

The global problem of energy supply and the reduction of the carbon footprint can only be solved by a massive replacement of fossil fuels or atomic energy by renewable resources. As the latter are mostly weather-dependent, they are uncontrollable and unpre ...

EPFL2019

A thermally synergistic photo-electrochemical hydrogen generator operating under concentrated solar irradiation

Sophia Haussener, Saurabh Yuvraj Tembhurne, Fredy Intelligent Nandjou Dongmeza

Achieving high current densities while maintaining high energy conversion efficiency is one of the main challenges for enhanc-ing the competitiveness of photo-electrochemical devices. We describe a concept that allows this challenge to be overcome by opera ...

2019

Multi-analysis and modeling of asymmetry offset for Hall effect structures

Maria-Alexandra Paun

The topological (asymmetry) offset voltage of CMOS cross-like Hall cells is analyzed in this paper. In order to attain the stated objective, different approaches have been considered. Both circuit and three-dimensional models have been developed. Variation ...

Elsevier Science Bv2017

Graphene Field Effect Devices Operating in Differential Circuit Configuration

Yusuf Leblebici, Davide Sacchetto, Clemens Benedict Nyffeler

We study the concept of a basic building block for circuits using differential signaling and being based on graphene field effect devices. We fabricated a number of top-gated graphene FETs using commercially available graphene and employing electron beam l ...

Elsevier2015

Digitization Technique for UWB Receiver and Capacitive Sensor Interface

Shenjie Wang

As CMOS processes continue to scale to smaller dimensions, the increased fT of the devices and smaller parasitic capacitance allow formore power efficient and faster digital circuits to be made. But at the same time, output impedance of transistors has gon ...

EPFL2014

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

Multivariable Control of Single-Inductor Dual-Output Buck Converters

Alfred Rufer, Alireza Karimi, Behrooz Bahrani

Cross regulation is the main technical drawback of a Single-Inductor Multiple-Output (SIMO) dc-dc converter. This paper proposes a multivariable digital controller to suppress the cross regulation of a Single-Inductor Dual-Output (SIDO) buck converter in C ...

Ieee2013

Low-Noise, High-Density Microelectronics for Multi-Mode Screening of Excitable Biological Cells

Urs Alexander Müller

In the past decades, two recording tools have established themselves as the working horses in the field of electrophysiological cell research: the microelectrode array (MEA) and the optical fluorescence imaging. The former is a grid of miniature electrodes ...

EPFL2012

Compensation of the Instrumental Decay in Measured Lightning Electric Field Waveforms

Farhad Rachidi-Haeri, Marcos Rubinstein, José-Luis Bermudez

The proper characterization of lightning electric and magnetic fields is very important for a number of reasons, such as the study and design of lightning protection and the validation of return stroke models. Also, an accurate late time response of the se ...

Institute of Electrical and Electronics Engineers2012

Polymer-electrolyte gated graphene transistors for analog and digital phase detection

Klaus Kern, Marko Burghard, Kannan Balasubramanian

We present an alternating current (ac) circuit based on a misoriented bilayer graphene device for analog and digital phase detection. We exploit the ambipolar nature of the transfer characteristics of a misoriented bilayer graphene transistor. The transist ...

AIP American Institute of Physics2011

Real-time high-sensitivity impedance measurement interface for tethered BLM biosensor arrays

Giovanni De Micheli, Yusuf Leblebici, Horst Arthur Vogel, Luca Benini, Carlotta Guiducci, Yüksel Temiz, Samuel Terrettaz

This paper presents a switched-capacitor (SC) current integrator circuit for impedance measurement of tethered bilayer lipid membrane (tBLM) biosensors. The circuit comprises a small number of high performance components enabling enhanced experimental flex ...

2008

Quels processus pour la création d'un quartier durable : l'exemple du projet Ecoparc à Neuchâtel

Emmanuel Rey

Dans une optique de développement urbain durable, la régénération des friches urbaines en quartiers durables constituent un potentiel intéressant. Ce type d’opérations implique l’intégration d’une recherche de qualité globale à la dynamique du projet, susc ...

2007

New error amplifier topology for Low Dropout Voltage regulators using compound OTA-OPAMP

Maher Kayal

Typical Low Dropout Voltage regulators (LDO), uses an error amplifier in a linear closed loop. The main advantage of such linear regulators is the low standby current due to the absence of switching. In addition, a fully integrated linear regulator with no ...

2007