The use of pinned photodiode (PPD) based CMOS image sensors in harsh radiation environment (such as space) is limited by their tolerance to ionizing radiation. Technology computer aided design (TCAD) simulations are performed to reproduce the radiation induced defect and therefore the dark current increase in pinned photodiode pixels up to 1 kGy (i...
We present the results of the implementation of two VCSEL-based optoelectronic oscillators (VBO) using one on-chip 850-nm vertical-cavity surface-emitting laser (VCSEL). The reported VBOs are implemented at 10 and 12 GHz using a direct-modulated VCSEL. The laser direct modulation bandwidth is 13.3 GHz. The VBOs performance is described through the ...
This paper considers an iterative procedure to design a minimum possible order unknown input functional observer for linear time-invariant (LTI) systems. Necessary and sufficient conditions for the existence of the observer are given. The proposed procedure is simple and is based neither on the solution of a generalized Sylvester equation nor canon...
Temperature-induced solder joint fatigue is a main reliability concern for aerospace and military industries whose electronic equipment used in the field is required to remain functional under harsh loadings. Due to the RoHS directive which eventually will prevent lead from being utilized in electronic systems, there is a need for a better understa...
This paper concerns a ground penetrating radar system (GPR) presenting beam forming ability. This ability is due to a great flexibility in the emission of wavefronts. The innovative concept is to use an array of antennas which can reconfigure itself dynamically, in order to focus on a desired target. This antennas system can act as a new microwave ...
Membrane bioreactors (MBRs) are widely used in wastewater treatment processes. However, membrane fouling mitigation remains challenging. Several strategies have been developed industrially to enhance MBR productivity, including coarse bubble aeration. The way such aeration participates in hydrodynamic patterns is an important research topic given i...
Monitoring activities in industry may require the use of wireless sensor networks, for instance due to difficult access or hostile environment. But it is well known that this type of networks has various limitations like the amount of disposable energy. Indeed, once a sensor node exhausts its resources, it will be dropped from the network, stopping...
De nouvelles applications émergent avec le développement de l’électronique souple comme des panneaux tactiles pliables, ou des capteurs de mouvement humain portables (wearable). Les technologies bien maîtrisées des jauges silicium sont mal adaptées à ces usages (faible élongation maximale, hautes températures de fabrication). Dans ce contexte, il e...
Conditioned-based maintenance and prognostics and health management enable to optimize maintenance by scheduling the necessary repairs and replacements of technical system components according to their present and future health states. The assessment of future health states is the prognostics and health management keystone. Many technical productio...
Les défauts ponctuels dans les semi-conducteurs sont étudiés pour la réalisation de bits quantiques d’information (Qubit). A ce jour, le système le plus développé est le centre NV dans le diamant. Récemment, les défauts ponctuels du carbure de silicium (SiC) ont été identifiés comme prometteurs pour la réalisation de Qubit en raison de leur long te...
