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Catherine Dehollain

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Publications associées (139)

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Wireless Energy and Data Transfer for Neural Recording and Stimulation Applications

Catherine Dehollain, Gürkan Yilmaz

This study presents design and implementation of a wireless energy and transfer system. The system is targeted to work in accordance with neural recording and stimulation purposes, more specifically for in-vivo epilepsy monitoring. A brief overview of the ...

Ieee2013

Remotely powered addressable UHF RFID integrated system

Catherine Dehollain, Michel Declercq, Jari-Pascal Curty, Norbert Jöhl

This paper presents a fully integrated remotely powered and addressable radio frequency identification (RFID) transponder working at 2.45 GHz. The achieved operating range at 4 W effective isotropically radiated power (EIRP) base-station transmit power is ...

2005

System for active skull replacement for brain interface and method of using the same

Catherine Dehollain, Kanber Mithat Silay, Gürkan Yilmaz

An active skull replacement system including an implant having an area A, an upper surface, and a bottom surface, adapted to be implanted at least in part into a skull of a subject so to substitute a portion of the skull, the bottom surface arranged to fac ...

2017

A 13.56MHz Active Rectifier with Digitally-Assisted and Delay Compensated Comparators for Biomedical Implantable Devices

Alexandre Schmid, Catherine Dehollain, Mohammad Javad Karimi

This paper presents the design of a 13.56 MHz full-wave active rectifier that utilizes digitally-assisted and delay compensated comparators for wirelessly powered biomedical implants. The proposed design employs delay compensation and digital assistance te ...

New York2023

Self-Powered Measurement System for Remote Monitoring of Human Metabolism

Sandro Carrara, Catherine Dehollain

Continuous and minimally invasive measurements of metabolism are the key to the understanding and proper treatment of various pathologies. In this context, this paper deals with an innovative concept of a wireless measurement system that monitors glucose c ...

IEEE2022

Dynamic Range and Complexity Optimization of Mixed-Signal Machine Learning Systems

Andreas Peter Burg, Catherine Dehollain

Audio processing had been in demand throughout the electronic era. Recent advances in neural networks increased the demand on audio processing for speech recognition applications. In this work, a rigorous study on the dynamic range and system complexity op ...

IEEE2021

Analysis, modeling and design of a CMOS Super-Regenerative Receiver for implanted medical devices under square and sinusoidal quench signals

Catherine Dehollain, Naci Pekçokgüler

Medical implant devices have found widespread application in recent years. The Super-Regenerative Receiver has been one preferred architecture due to its power advantage over other architectures. We present a detailed analysis of the circuits and their equ ...

ELSEVIER SCIENCE BV2019

A 30 mu W Remotely Powered Local Temperature Monitoring Implantable System

Catherine Dehollain

An implantable local temperature monitoring system for a laboratory mouse is presented. Magnetic coupling is used to remotely power the passive implant. The temperatures of two local points are monitored by thermistors. A low-power readout circuit is imple ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Remotely powered implantable heart monitoring system for freely moving animals

Philippe Renaud, Catherine Dehollain, Harald Van Lintel, Enver Gürhan Kilinç, Franco Maloberti

This paper presents a remotely powered implantable heart monitoring system for freely moving animals. The system measures the blood pressure in the left ventricle of the heart and transmits the data to a database unit. The implanted unit is remotely powere ...

IEEE2013

Power Feedback Control Unit for Closed-Loop Wirelessly Powered Biomedical Implants

Alexandre Schmid, Catherine Dehollain, Mohammad Javad Karimi

Effective power management is crucial in designing wirelessly powered implants that have a long operational lifetime. It ensures that the received power is optimized for efficient operation and prevents damage caused by excessive or insufficient powering. ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023

Remote Powering Realization for Smart Orthopedic Implants

Catherine Dehollain, Oguz Atasoy

This paper presents a remote powering realization for smart orthopedic implants with a full-wave rectifier and a voltage doubler. The measured power efficiency of the rectifier at 13.56 MHz is 80% for an output power of 20 mW with 2.2 V output. The rectifi ...

Ieee2012

Theoretical Study for Safe and Efficient Energy Transfer to Deeply Implanted Devices Using Ultrasound

Catherine Dehollain

The goal of this paper is to prove that a safe and efficient energy transfer is possible between an external transducer located on the patient's skin and a device deeply implanted in the abdomen. An ultrasound propagation model based on the Rayleigh-Sommer ...

Institute of Electrical and Electronics Engineers2012

A Novel RF Spectrum Monitoring Architecture for an Ultra-Low-Power Wi-Fi Geopositioning System

Andreas Peter Burg, Catherine Dehollain

Wireless radio consumes the highest power in many systems and must be activated wisely to save power especially in battery-powered systems. Hence, gathering insight into the spectrum activity is needed to control the wireless radio. In this work, classic f ...

IEEE2021

TIA Linearity Analysis for Current Mode Receivers

Catherine Dehollain

Current-mode signal processing offers superior linearity and flexibility in front-end implementation. The linearity of a low-input-impedance Trans-Impedance Amplifier (TIA), which is used as a buffer stage that follows a passive mixer, is important in dete ...

IEEE2018

Numerical analysis of temperature elevation in the head due to power dissipation in a cortical implant

Catherine Dehollain, Michel Declercq, Kanber Mithat Silay

2008

High Precision Capacitive Moisture Sensor for Polymers: Modeling and Experiments

Marco Mattavelli, Jean-Michel Sallese, Catherine Dehollain, Diego Ruben Barrettino, Rosane Moura Dos Santos Barrettino

In this work a high precision capacitive moisture sensor for polymers was designed and fabricated. The device is part of a compact, fast, and economic moisture analyzer capable of reaching a similar precision than commercial moisture analyzers based on the ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Intrinsically Self-powered, Battery-free, and Sensor-free Ambient Light Control System

Andreas Peter Burg, Catherine Dehollain

This paper deals with an energy-autonomous wireless sensing system with an indirect measurement of the light energy for ambient lighting sensing. The system can perform power measurements without battery or external power sources and generates time-domain ...

IEEE2021

20-300 MHz Frequency Generator with-70 dBc Reference Spur for Low Jitter Serial Applications

Catherine Dehollain, Gürkan Yilmaz

This paper presents a frequency synthesizer based on a phase locked loop (PLL) targeting low jitter applications. The frequency generator covers a range wider than a decade, more explicitly from 20 to 300 MHz. Thanks to a 4-stage ring oscillator, it can pr ...

Ieee2016

A fully on-chip LDO voltage regulator with 37 dB PSRR at 1 MHz for remotely powered biomedical implants

Yusuf Leblebici, Catherine Dehollain, Alexandre Schmid, Kanber Mithat Silay, Vahid Majidzadeh Bafar

This article presents a fully on-chip low-power LDO voltage regulator dedicated to remotely powered wireless cortical implants. This regulator is stable over the full range of alternating load current and provides fast load regulation achieved by applying ...

Springer US2011

Design and Optimization of passive UHF RFID Systems

Catherine Dehollain, Michel Declercq, Jari-Pascal Curty, Norbert Jöhl

Springer2006