Publications de Gürkan Yilmaz

Adaptive Learning-Based Compressive Sampling for Low-power Wireless Implants

Catherine Dehollain, Yusuf Leblebici, Volkan Cevher, Mahsa Shoaran, Gürkan Yilmaz, Franco Maloberti, Cosimo Aprile, Kerim Türe, Luca Baldassarre

Implantable systems are nowadays being used to interface the human brain with external devices, in order to understand and potentially treat neurological disorders. The most predominant design constraints are the system’s area and power. In this paper, we ...

2018

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

Power/data platform for high data rate in implanted neural monitoring system

Catherine Dehollain, Alexandre Schmid, Gürkan Yilmaz, Franco Maloberti, Kerim Türe, Reza Ranjandish

IEEE2017

Optimization of the Data Rate of an OOK CMOS Medical Transmitter Based on LC Oscillators

Catherine Dehollain, Gürkan Yilmaz, Franco Maloberti, Kerim Türe

This paper presents techniques for increasing communication data rates for OOK modulated signals in the case the carrier frequency is generated by a cross-coupled pair LC oscillator. The proposed circuitry completely turns off the transmitter during the tr ...

Ieee2016

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

Single frequency wireless power transfer and full-duplex communication system for intracranial epilepsy monitoring

Catherine Dehollain, Gürkan Yilmaz

Current clinical neural recording methods which employ wired connections to the external world can be improved by eliminating the wires thanks to integrated circuit and microsystems technology. This study presents design and implementation of such a system ...

Elsevier2014

Remote Powering Platform for Implantable Sensor Systems at 2.45 GHz

Catherine Dehollain, Onur Kazanç, Gürkan Yilmaz, Franco Maloberti

Far-field remotely powered sensor systems enable long distance operation for low-power sensor systems. In this work, we demonstrate a remote powering platform with a miniaturized antenna and remote powering base station operating at 2.45 GHz. The rectenna, ...

Ieee2014

Wireless Power Transfer and Data Communication for Intracranial Neural Implants Case Study : Epilepsy Monitoring

Gürkan Yilmaz

Recording neural activities plays an important role in numerous applications ranging from brain mapping to implementation of brain-machine interfaces (BMI) to recover lost functions or to understand the mechanisms behind the neurological disorders such as ...

EPFL2014

In-Vivo Validation of a Compact Inductively-Powered Neural Recording Interface

Catherine Dehollain, Alexandre Schmid, Mahsa Shoaran, Gürkan Yilmaz

2014

Wireless Data and Power Transmission Aiming Intracranial Epilepsy Monitoring

Catherine Dehollain, Oguz Atasoy, Gürkan Yilmaz

This study presents a wireless power and data transmission system to overcome the problems in intracranial epilepsy monitoring associated with transcutaneous wires. Firstly, a wireless power transfer link based on inductive coupling is implemented and a po ...

Spie-Int Soc Optical Engineering2013

Capacitive Detuning Optimization for Wireless Uplink Communication in Neural Implants

Catherine Dehollain, Gürkan Yilmaz

This study presents a wireless energy and data transfer system for neural implants with an emphasis on epilepsy monitoring. A wireless uplink data transmission system is built upon a remote powering system based on magnetic coupling which has been implemen ...

Ieee2013

Wireless Energy and Data Transfer for In-Vivo Epileptic Focus Localization

Catherine Dehollain, Oguz Atasoy, Gürkan Yilmaz

This paper presents a wireless energy transfer and a wireless data communication link for neural signal monitoring-more specifically, fast ripple detection for epilepsy patients. Wireless data are transferred on the same channel as the wireless energy tran ...

Institute of Electrical and Electronics Engineers2013

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