Modelisation de transistors M.O.S. a substrat non uniformement dope pour des applications analogiques PDF Download

Author: Olivier Declerck
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Languages : fr
Pages : 0

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Author: Olivier Declerck
Publisher:
ISBN:
Category :
Languages : fr
Pages : 216

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Un outil d'optimisation de modèles et d'extraction de paramètres de transistors MOS a été développé spécifiquement pour des applications analogiques. Il est articulé autour d'un algorithme de minimisation de fonctions non linéaires par la méthode des moindres carrés. Cet outil a facilité le développement et la validation d'un modèle de transistors MOS dont le substrat n'est pas uniformément dopé. L'importance d'une très exacte prise en compte de l'évolution de la tension de seuil en fonction de la polarisation du substrat est mise en évidence. Une méthode de calcul est proposée qui permet sa détermination précise, à partir de la seule donnée du profil de dopage. Le calcul du courant drain statique est basé sur un ajustement précis de la tension de seuil à l'aide d'une fonction empirique universelle. Il est continu dans tous les régimes de fonctionnement et ne nécessite qu'un nombre très restreint de paramètres. Pour la simulation petit signal, l'utilisation d'un modèle approché permet au modèle de garder toute sa simplicité; il utilise une approche quasi statique

Author: Alexandre Bracale
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Languages : fr
Pages : 206

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Author: Alexandre Siligaris
Publisher:
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Languages : en
Pages : 223

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Les communications sans fil ne cessent d'intégrer la vie quotidienne moderne. Ces applications font partie intégrale du domaine des radiofréquences (RF), et elles se sont développées grâce au progrès des transistors et de leurs performances. Le transistor MOS sur substrat Si est une technologie très prometteuse pour ces applications, car elle présente une faible consommation en puissance, demande de faibles tensions de polarisation et ses performances sont suffisamment élevées. Dans cette thèse, nous avons développé un modèle non linéaire pour les transistors MOS utile pour les applications en hyperfréquences. Le modèle développé reproduit de manière très précise les caractéristiques hyperfréquences des transistors MOS, tant en régime petit signal qu'en régime grand signal. Il tient en compte l'effet kink, présent dans les composants partiellement désertés sur substrat SOI. Le modèle a été validé à travers des mesures grand signal à l'aide d'un analyseur de réseaux vectoriel non linéaire. L'extraction des paramètres du modèle est très rapide son implémentation dans un simulateur de circuits commercial est très simple. A l'aide de ce modèle, de nombreux circuits ont été conçus et réalisés en technologie MOS SOI.

Author: Fabio Remondino
Publisher: Springer Science & Business Media
ISBN: 3642275230
Category : Technology & Engineering
Languages : en
Pages : 243

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Today the cost of solid-state two-dimensional imagers has dramatically dropped, introducing low cost systems on the market suitable for a variety of applications, including both industrial and consumer products. However, these systems can capture only a two-dimensional projection (2D), or intensity map, of the scene under observation, losing a variable of paramount importance, i.e., the arrival time of the impinging photons. Time-Of-Flight (TOF) Range-Imaging (TOF) is an emerging sensor technology able to deliver, at the same time, depth and intensity maps of the scene under observation. Featuring different sensor resolutions, RIM cameras serve a wide community with a lot of applications like monitoring, architecture, life sciences, robotics, etc. This book will bring together experts from the sensor and metrology side in order to collect the state-of-art researchers in these fields working with RIM cameras. All the aspects in the acquisition and processing chain will be addressed, from recent updates concerning the photo-detectors, to the analysis of the calibration techniques, giving also a perspective onto new applications domains.

Author: Gian-Franco Dalla Betta
Publisher: BoD – Books on Demand
ISBN: 953307163X
Category : Technology & Engineering
Languages : en
Pages : 482

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Photodiodes, the simplest but most versatile optoelectronic devices, are currently used in a variety of applications, including vision systems, optical interconnects, optical storage systems, photometry, particle physics, medical imaging, etc. Advances in Photodiodes addresses the state-of-the-art, latest developments and new trends in the field, covering theoretical aspects, design and simulation issues, processing techniques, experimental results, and applications. Written by internationally renowned experts, with contributions from universities, research institutes and industries, the book is a valuable reference tool for students, scientists, engineers, and researchers.

Author:
Publisher: Academic Press
ISBN: 0123876966
Category : Science
Languages : en
Pages : 593

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Single-photon generation and detection is at the forefront of modern optical physics research. This book is intended to provide a comprehensive overview of the current status of single-photon techniques and research methods in the spectral region from the visible to the infrared. The use of single photons, produced on demand with well-defined quantum properties, offers an unprecedented set of capabilities that are central to the new area of quantum information and are of revolutionary importance in areas that range from the traditional, such as high sensitivity detection for astronomy, remote sensing, and medical diagnostics, to the exotic, such as secretive surveillance and very long communication links for data transmission on interplanetary missions. The goal of this volume is to provide researchers with a comprehensive overview of the technology and techniques that are available to enable them to better design an experimental plan for its intended purpose. The book will be broken into chapters focused specifically on the development and capabilities of the available detectors and sources to allow a comparative understanding to be developed by the reader along with and idea of how the field is progressing and what can be expected in the near future. Along with this technology, we will include chapters devoted to the applications of this technology, which is in fact much of the driver for its development. This is set to become the go-to reference for this field. - Covers all the basic aspects needed to perform single-photon experiments and serves as the first reference to any newcomer who would like to produce an experimental design that incorporates the latest techniques - Provides a comprehensive overview of the current status of single-photon techniques and research methods in the spectral region from the visible to the infrared, thus giving broad background that should enable newcomers to the field to make rapid progress in gaining proficiency - Written by leading experts in the field, among which, the leading Editor is recognized as having laid down the roadmap, thus providing the reader with an authenticated and reliable source