Sylvain Fontanes

Title: Sylvain Fontanes: Innovator in Electric Charge Reading Devices

Introduction

Sylvain Fontanes is a notable inventor based in Paris, France, recognized for his contributions to the field of electric charge reading devices. With a total of five patents to his name, Fontanes has made significant advancements in technology that enhance the accuracy and efficiency of charge measurement.

Latest Patents

One of Fontanes' latest patents is a device for reading a quantity of electric charge. This analog device is designed to read the charge in a transversal charge transfer filter. It incorporates a capacitor and two MOS transistors connected in series to the point in the filter where the charge is measured. The capacitor is linked to the common point of the two transistors, which operate in phase opposition to ensure the capacitor is charged. This setup maintains a constant potential at the charge reading point. Any variation in the charge quantity under an electrode results in a change in potential at the common point, forming the read signal detected by a third MOS transistor.

Another significant patent is the charge transfer recursive filter. In this invention, all the weighting coefficients of the filter are positive, allowing a weighted charge quantity to be collected by a line beneath one of the elementary electrodes of each weighting electrode. A charge reading device is coupled to this line, supplying an electrical signal to the negative input of a differential amplifier, which also receives the sampled input voltage of the filter at its positive input. The electrical output signal is taken from the differential amplifier and reinjected at the input of the filter through injecting means.

Career Highlights

Throughout his career, Sylvain Fontanes has worked with prominent companies, including Thomson-CSF, where he contributed to various innovative projects. His work has significantly impacted the development of electric charge measurement technologies.

Collaborations

Fontanes has collaborated with notable individuals in his field, including Roger Benoit-Gonin and Jean L Berger. These collaborations have fostered an environment of innovation and creativity, leading to advancements in technology.

Conclusion

Sylvain Fontanes is a distinguished inventor whose work in electric charge reading devices has paved the way for advancements in technology. His patents reflect a deep understanding of electrical engineering and a commitment to innovation.