Mathieu Gratuze

Title: Mathieu Gratuze and MEMS Ultrasonic Transducer Innovation.

Introduction

Mathieu Gratuze is an inventor associated with École de technologie supérieure in Montreal, Canada. His patent work concerns piezoelectric micromachined ultrasonic transducers and methods for improving their performance.

Latest Patents

Gratuze is named on 1 patent, titled “Pulse Shaping Methods for Non-Linear Acoustic Piezoelectric Transducers.” The patent addresses nonlinear behavior in MEMS resonators, which can limit performance in some applications but prove useful in others. It describes techniques for characterizing that behavior so designers can tailor resonator design and manufacturing to specific applications. It also presents drive schemes intended to improve the generation of pulses from these resonators.

The invention focuses on piezoelectric micromachined ultrasonic transducers, or PMUTs, which use microelectromechanical systems (MEMS). Their compatibility with silicon-based CMOS electronics can support monolithic integration and take advantage of automated, large-wafer silicon processing.

Career Highlights

Gratuze’s patent contribution reflects work at the intersection of MEMS, acoustic transducers, and electronic integration. The disclosed characterization and pulse-generation approaches offer designers ways to account for nonlinear resonator behavior when developing devices for different uses.

Collaborations

The patent lists Frederic Nabki as a coworker. Gratuze is associated with École de technologie supérieure.

Conclusion

Mathieu Gratuze’s patent work addresses how to characterize and manage nonlinear behavior in MEMS-based ultrasonic transducers, supporting more application-specific designs and improved pulse generation.