Publications de Christian Robert

A low-cost UWB sensor node powered by a piezoelectric harvester or solar cells

Nico de Rooij, Anja Skrivervik, Pierre-André Farine, Robert Andrew Lockhart, Danick Briand, Cyril Botteron, Christian Robert, Franz-Josef Haug, Pattanaphong Janphuang, Gabriele Tasselli

We propose an autonomous battery-less wireless sensor node that combines on a single printed circuit board an ultra-wideband (UWB) transmitter and its printed antenna, together with a piezoelectric cantilever and a solar cell array to harvest vibrations an ...

Elsevier2016

Design of an integrated thermoelectric generator power converter for ultra-low power and low voltage body energy harvesters aimed at ExG active electrodes

Pierre-André Farine, Alexis Boegli, Christian Robert, Milad Ataei Ashtiani

This paper describes a detailed design procedure for an efficient thermal body energy harvesting integrated power converter. The procedure is based on the examination of power loss and power transfer in a converter for a self-powered medical device. The ef ...

Institute of Physics2015

A Versatile 1.4-mW 6-bits CMOS ADC for Pulse-Based UWB Communication Systems

Frédéric Chastellain, Pierre-André Farine, Cyril Botteron, Christian Robert, Saeed Ghamari

An Analog to Digital Converter (ADC) using the low duty-cycle nature of pulse-based Ultra Wide-Band (UWB) communications to reduce its power consumption is proposed. Implemented in CMOS 180 nm technology, it can capture a 5 ns window at 4 GS/s each 100 ns, ...

2014

Path-loss and car-body-effect characterization for smart tires communications at UWB and ISM bands

Pierre-André Farine, Cyril Botteron, Christian Robert, Yi Guo, Saeed Ghamari, Gabriele Tasselli

Next generation of smart tires will improve the safety and stability of the vehicle by monitoring road parameters, such as pavement and rolling conditions, with sensors placed on tire surface. Between the tread and the metal belt of the tire there are only ...

IEEE2014

Design of an Integrated Thermoelectric Generator Power Converter for Ultra-Low Power and Low Voltage Body Energy Harvesters aimed at EEG/ECG Active Electrodes

Pierre-André Farine, Alexis Boegli, Christian Robert, Milad Ataei Ashtiani

This paper describes a design procedure for an efficient body thermal energy harvesting integrated power converter. This procedure is based on loss examination for a self-powered medical device. All optimum system parameters are calculated respecting the t ...

Iop Publishing Ltd2014

A sub-µA power management circuit in 0.18µm CMOS for energy harvesters

Pierre-André Farine, Cyril Botteron, Christian Robert, Gabriele Tasselli

We explore a miniature sensor node that could be placed in an environment which would interrogate, take decisions and transmit autonomously and seamlessly without the need of a battery. With the system completely powered by an energy harvester for autonomo ...

2013

Piezoelectric Actuators Characterization

Pierre-André Farine, Alexis Boegli, Christian Robert, Patrick Stadelmann

This paper describes a system to drive piezoelectric actuators over more than one decade of voltages and one octave of frequencies, in order to perform high-speed complex impedance characterization at a user chosen voltage excitation level. This characteri ...

Ieee Computer Soc2012

Low Power ASIC transmitter for UWB-IR radio communication and positioning

Pierre-André Farine, Phillip Tomé, Cyril Botteron, Christian Robert

This paper describes a low power Ultra-Wideband Impulse Radio (UWB-IR) Application Specific Integrated Circuit (ASIC) transmitter implemented in UMC 0.18 μm. This transmitter has been designed for low data rate communication applications and indoor positio ...

2010

UWB-based Local Positioning System: from a small-scale Experimental Platform to a large-scale Deployable System

Pierre-André Farine, Phillip Tomé, Cyril Botteron, Christian Robert

A few years ago an experimental platform was designed and built in order to demonstrate the feasibility of Ultra-Wideband (UWB) technology applied to indoor positioning. This small-scale demonstrator proved to be a valuable research tool with the flexibili ...

2010