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Author : Denis Dolgos
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (793 download)
Download or read book Full-band Monte Carlo Simulation of Single Photon Avalanche Diodes written by Denis Dolgos and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marc Dandin
Publisher : Springer Nature
ISBN 13 : 3031643348
Total Pages : 195 pages
Book Rating : 4.0/5 (316 download)
Download or read book Single-Photon Avalanche Diodes and Photon Counting Systems written by Marc Dandin and published by Springer Nature. This book was released on with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matheus Cavalcante
Publisher : BoD – Books on Demand
ISBN 13 : 3866288018
Total Pages : 224 pages
Book Rating : 4.8/5 (662 download)
Download or read book Fighting Back the Von Neumann Bottleneck with Small- and Large-Scale Vector Microprocessors written by Matheus Cavalcante and published by BoD – Books on Demand. This book was released on 2023-08-24 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: In his seminal Turing Award Lecture, Backus discussed the issues stemming from the word-at-a-time style of programming inherited from the von Neumann computer. More than forty years later, computer architects must be creative to amortize the von Neumann Bottleneck (VNB) associated with fetching and decoding instructions which only keep the datapath busy for a very short period of time. In particular, vector processors promise to be one of the most efficient architectures to tackle the VNB, by amortizing the energy overhead of instruction fetching and decoding over several chunks of data. This work explores vector processing as an option to build small and efficient processing elements for large-scale clusters of cores sharing access to tightly-coupled L1 memory
Author : Andreas Dominic Kurth
Publisher : BoD – Books on Demand
ISBN 13 : 3866287747
Total Pages : 282 pages
Book Rating : 4.8/5 (662 download)
Download or read book An Open-Source Research Platform for Heterogeneous Systems on Chip written by Andreas Dominic Kurth and published by BoD – Books on Demand. This book was released on 2022-10-05 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous systems on chip (HeSoCs) combine general-purpose, feature-rich multi-core host processors with domain-specific programmable many-core accelerators (PMCAs) to unite versatility with energy efficiency and peak performance. By virtue of their heterogeneity, HeSoCs hold the promise of increasing performance and energy efficiency compared to homogeneous multiprocessors, because applications can be executed on hardware that is designed for them. However, this heterogeneity also increases system complexity substantially. This thesis presents the first research platform for HeSoCs where all components, from accelerator cores to application programming interface, are available under permissive open-source licenses. We begin by identifying the hardware and software components that are required in HeSoCs and by designing a representative hardware and software architecture. We then design, implement, and evaluate four critical HeSoC components that have not been discussed in research at the level required for an open-source implementation: First, we present a modular, topology-agnostic, high-performance on-chip communication platform, which adheres to a state-of-the-art industry-standard protocol. We show that the platform can be used to build high-bandwidth (e.g., 2.5 GHz and 1024 bit data width) end-to-end communication fabrics with high degrees of concurrency (e.g., up to 256 independent concurrent transactions). Second, we present a modular and efficient solution for implementing atomic memory operations in highly-scalable many-core processors, which demonstrates near-optimal linear throughput scaling for various synthetic and real-world workloads and requires only 0.5 kGE per core. Third, we present a hardware-software solution for shared virtual memory that avoids the majority of translation lookaside buffer misses with prefetching, supports parallel burst transfers without additional buffers, and can be scaled with the workload and number of parallel processors. Our work improves accelerator performance for memory-intensive kernels by up to 4×. Fourth, we present a software toolchain for mixed-data-model heterogeneous compilation and OpenMP offloading. Our work enables transparent memory sharing between a 64-bit host processor and a 32-bit accelerator at overheads below 0.7 % compared to 32-bit-only execution. Finally, we combine our contributions to a research platform for state-of-the-art HeSoCs and demonstrate its performance and flexibility.
Author : Florian Stefan Glaser
Publisher : BoD – Books on Demand
ISBN 13 : 3866287771
Total Pages : 216 pages
Book Rating : 4.8/5 (662 download)
Download or read book An Event-Driven Parallel-Processing Subsystem for Energy-Efficient Mobile Medical Instrumentation written by Florian Stefan Glaser and published by BoD – Books on Demand. This book was released on 2022-12-02 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aging population and the thereby ever-rising cost of health services call for novel and innovative solutions for providing medical care and services. So far, medical care is primarily provided in the form of time-consuming in-person appointments with trained personnel and expensive, stationary instrumentation equipment. As for many current and past challenges, the advances in microelectronics are a crucial enabler and offer a plethora of opportunities. With key building blocks such as sensing, processing, and communication systems and circuits getting smaller, cheaper, and more energy-efficient, personal and wearable or even implantable point-of-care devices with medicalgrade instrumentation capabilities become feasible. Device size and battery lifetime are paramount for the realization of such devices. Besides integrating the required functionality into as few individual microelectronic components as possible, the energy efficiency of such is crucial to reduce battery size, usually being the dominant contributor to overall device size. In this thesis, we present two major contributions to achieve the discussed goals in the context of miniaturized medical instrumentation: First, we present a synchronization solution for embedded, parallel near-threshold computing (NTC), a promising concept for enabling the required processing capabilities with an energy efficiency that is suitable for highly mobile devices with very limited battery capacity. Our proposed solution aims at increasing energy efficiency and performance for parallel NTC clusters by maximizing the effective utilization of the available cores under parallel workloads. We describe a hardware unit that enables fine-grain parallelization by greatly optimizing and accelerating core-to-core synchronization and communication and analyze the impact of those mechanisms on the overall performance and energy efficiency of an eight-core cluster. With a range of digital signal processing (DSP) applications typical for the targeted systems, the proposed hardware unit improves performance by up to 92% and 23% on average and energy efficiency by up to 98% and 39% on average. In the second part, we present a MCU processing and control subsystem (MPCS) for the integration into VivoSoC, a highly versatile single-chip solution for mobile medical instrumentation. In addition to the MPCS, it includes a multitude of analog front-ends (AFEs) and a multi-channel power management IC (PMIC) for voltage conversion. ...
Author : Fabian M. Bufler
Publisher : Herbert Utz Verlag
ISBN 13 : 9783896752703
Total Pages : 196 pages
Book Rating : 4.7/5 (527 download)
Download or read book Full-band Monte Carlo Simulation of Electrons and Holes in Strained Si and SiGe written by Fabian M. Bufler and published by Herbert Utz Verlag. This book was released on 1998 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Andrew Peskin
Publisher :
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.:/5 (427 download)
Download or read book Monte Carlo simulation of impact ionization in III-V compound avalanche photodiodes written by Mark Andrew Peskin and published by . This book was released on 1998 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Craig Hoffman
Publisher : CRC Press
ISBN 13 : 1351247174
Total Pages : 3726 pages
Book Rating : 4.3/5 (512 download)
Download or read book Encyclopedia of Optical and Photonic Engineering (Print) - Five Volume Set written by Craig Hoffman and published by CRC Press. This book was released on 2015-09-22 with total page 3726 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of the Encyclopedia of Optical and Photonic Engineering provided a valuable reference concerning devices or systems that generate, transmit, measure, or detect light, and to a lesser degree, the basic interaction of light and matter. This Second Edition not only reflects the changes in optical and photonic engineering that have occurred since the first edition was published, but also: Boasts a wealth of new material, expanding the encyclopedia’s length by 25 percent Contains extensive updates, with significant revisions made throughout the text Features contributions from engineers and scientists leading the fields of optics and photonics today With the addition of a second editor, the Encyclopedia of Optical and Photonic Engineering, Second Edition offers a balanced and up-to-date look at the fundamentals of a diverse portfolio of technologies and discoveries in areas ranging from x-ray optics to photon entanglement and beyond. This edition’s release corresponds nicely with the United Nations General Assembly’s declaration of 2015 as the International Year of Light, working in tandem to raise awareness about light’s important role in the modern world. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]
Author : Feng Ma
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (555 download)
Download or read book Monte Carlo Simulation of Gain, Noise, and Speed of Low-noise and High-speed Avalanche Photodiodes written by Feng Ma and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Heechang Lee
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (312 download)
Download or read book Full Band Ensemble Monte Carlo Simulation of Silicon Devices written by Christopher Heechang Lee and published by . This book was released on 1994 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Monte Carlo simulator for silicon devices has been developed. The band structure data for this self-consistent device simulator were computed using the empirical pseudopotential method. The ensemble Monte Carlo technique used in the simulations is described in detail. A homogeneous simulator, based on the same transport physics, is used to calibrate the device simulator as well as to indicate the shortcomings of more traditional simulators such as drift-diffusion based models, hydrodynamic and energy balance based models, and nonparabolic band approximation Monte Carlo models. A conventional metal-oxide-semiconductor field effect transistor (MOSFET) is simulated as a test case to validate the simulator. Finally, a floating gate memory element (non-volatile memory) is also examined. In this simulation, the Monte Carlo simulator is used as a post-processor to PISCES IIB in the interest of execution time. Despite the lack of self-consistency and rigor, the simulator is able to produce results which are in good agreement with experimental data.
Author : Amey Bordikar
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (166 download)
Download or read book Monte Carlo Simulation of Scatter in Single Photon Emission Computed Tomography written by Amey Bordikar and published by . This book was released on 2003 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael S. Shur
Publisher : World Scientific
ISBN 13 : 9814287873
Total Pages : 203 pages
Book Rating : 4.8/5 (142 download)
Download or read book Advanced High Speed Devices written by Michael S. Shur and published by World Scientific. This book was released on 2010 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced High Speed Devices covers five areas of advanced device technology: terahertz and high speed electronics, ultraviolet emitters and detectors, advanced III-V field effect transistors, III-N materials and devices, and SiC devices. These emerging areas have attracted a lot of attention and the up-to-date results presented in the book will be of interest to most device and electronics engineers and scientists. The contributors range from prominent academics, such as Professor Lester Eastman, to key US Government scientists, such as Dr Michael Wraback. Sample Chapter(s). Chapter 1: Simulation and Experimental Results on Gan Based Ultra-Short Planar Negative Differential Conductivity Diodes for THZ Power Generation (563 KB). Contents: Simulation and Experimental Results on GaN Basee Ultra-Short Planar Negative Differential Conductivity Diodes for THz Power Generation (B Aslan et al.); Millimeter Wave to Terahertz in CMOS (K K O S Sankaran et al.); Surface Acoustic Wave Propagation in GaN-On-Sapphire Under Pulsed Sub-Band Ultraviolet Illumination (V S Chivukula et al.); The First 70nm 6-Inch GaAs PHEMT MMIC Process (H Karimy et al.); Performance of MOSFETs on Reactive-Ion-Etched GaN Surfaces (K Tang et al.); GaN Transistors for Power Switching and Millimeter-Wave Applications (T Ueda et al.); Bi-Directional Scalable Solid-State Circuit Breakers for Hybrid-Electric Vehicles (D P Urciuoli & V Veliadis); and other papers. Readership: Electronic engineers, solid state physicists, graduate students studying physics or electrical engineering.
Author : Amanda Watson Duncan
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (39 download)
Download or read book Full-band Monte Carlo Simulation of Hot Electrons in Scaled Silicon Devices written by Amanda Watson Duncan and published by . This book was released on 1996 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: A full-band Monte Carlo device simulator has been used to study the effects of device scaling on hot electrons in different types of n-channel MOSFETs and flash memory structures. A MOSFET with a single source/drain implant, an LDD MOSFET, an SOI MOSFET, and a MOSFET built on top of a heavily doped "ground plane" have been simulated. Different scaling techniques have been applied to the devices to see the effects on the electric field, the energy distributions of the electrons, and the drain, substrate, and gate currents. The locations of impact ionization events and injection into the gate oxide are examined. It is shown that simpler models cannot adequately predict hot carrier behavior at the channel lengths studied (below 0.3 $mu$m) and that several strategies that are successful at suppressing the hot carrier population for longer channel lengths are not as useful when 0.1 $mu$m channel lengths are approached. The effect of scaling on the programming of stacked-gate and split-gate flash memory devices was also studied. Predictions of hot carrier behavior in small MOSFETs and flash memory devices are made, and suggestions for device design are given.
Author : Hektor Meier
Publisher :
ISBN 13 : 9783866283800
Total Pages : 188 pages
Book Rating : 4.2/5 (838 download)
Download or read book Design, Characterization and Simulation of Avalanche Photodiodes written by Hektor Meier and published by . This book was released on 2011 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sriraaman Sridharan
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)
Download or read book Design and Theoretical Study of Wurtzite GaN HEMTs and APDs Via Electrothermal Monte Carlo Simulation written by Sriraaman Sridharan and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-consistent, full-band, electrothermal ensemble Monte Carlo device simulation tool has been developed. It is used to study charge transport in bulk GaN, and to design, analyze, and improve the performance of AlGaN/GaN high electron mobility transistors (HEMTs) and avalanche photodiodes (APDs). Studies of electron transport in bulk GaN show that both peak electron velocity and saturated electron velocity are higher for transport in the basal plane than along the c-axis. Study of the transient electron velocity also shows a clear transit-time advantage for electron devices exploiting charge transport perpendicular to the c-axis. The Monte Carlo simulator also enables unique studies of transport under the influence of high free carrier densities but with low doping density, which is the mode of transport in AlGaN/GaN HEMTs. Studies of isothermal charge transport in AlGaN/GaN HEMTs operating at high gate bias show a drain current droop with increasing drain-source bias. The cause of the droop is investigated and a design utilizing source- or gate-connected field plate is demonstrated to eliminate the drain current droop. Electrothermal aspects of charge transport in AlGaN/GaN HEMTs are also investigated, and the influence of non-equilibrium acoustic and optical phonons is quantified. The calculated spatial distribution of non-equilibrium phonon population reveals a hot spot in the channel that is localized at low drain-source bias, but expands towards the drain at higher bias, significantly degrading channel mobility. Next, Geiger mode operation of wurtzite GaN-based homojunction APDs is investigated. The influences of dopant profile, active region thickness, and optical absorption profile on single photon detection efficiency (SPDE) are quantified. Simulations of linear mode gain as a function of multiplication region thickness and doping profile reveal that weakly n-type active regions may be exploited to achieve higher avalanche gain, without penalty to either applied bias or active region thickness. A separate absorption and multiplication APD (SAM-APD) utilizing a AlGaN/GaN heterojunction is also investigated. The presence of strong piezo-electric and spontaneous polarization charges at the heterojunction enables favorable electric field profile in the device to reduce dark current, improve excess noise factor, improve quantum efficiency, and improve breakdown probability. To maximize SPDE, a new device structure with a buried absorber is proposed and improved SPDE is demonstrated. Lastly, a new approach for the direct generation of self-sustaining millimeter-wave oscillations is proposed. In contrast to Gunn diodes, which exploit a bulk-like active region, periodic oscillation is achieved in the proposed structures through the creation, propagation and collection of traveling dipole domains supported by fixed polarization charge and the associated two-dimensional electron gas along the plane of a polar heterojunction. Numerical simulation of induced oscillations in a simple triode structure commonly used for AlGaN/GaN HEMTs reveals two distinct modes of self-sustaining millimeter-wave oscillation.
Author :
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.3/5 (91 download)
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2008 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. Jayant Praharaj
Publisher : John Wiley & Sons
ISBN 13 : 1119708591
Total Pages : 196 pages
Book Rating : 4.1/5 (197 download)
Download or read book Group III-Nitride Semiconductor Optoelectronics written by C. Jayant Praharaj and published by John Wiley & Sons. This book was released on 2023-10-11 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Group III-Nitride Semiconductor Optoelectronics Discover a comprehensive exploration of the foundations and frontiers of the optoelectronics technology of group-III nitrides and their ternary alloys In Group III-Nitride Semiconductor Optoelectronics, expert engineer Dr. C. Jayant Praharaj delivers an insightful overview of the optoelectronic applications of group III-nitride semiconductors. The book covers all relevant aspects of optical emission and detection, including the challenges of optoelectronic integration and a detailed comparison with other material systems. The author discusses band structure and optical properties of III-nitride semiconductors, as well as the properties of their low-dimensional structures. He also describes different optoelectronic systems such as LEDs, lasers, photodetectors, and optoelectronic integrated circuits. Group III-Nitride Semiconductor Optoelectronics covers both the fundamentals of the field and the most cutting-edge discoveries. Chapters provide thorough connections between theory and experimental advances for optoelectronics and photonics. Readers will also benefit from: A thorough introduction to the band structure and optical properties of group III-nitride semiconductors Comprehensive explorations of growth and doping of group III-nitride devices and heterostructures Practical discussions of the optical properties of low dimensional structures in group III- nitrides In-depth examinations of lasers and light-emitting diodes, other light-emitting devices, photodetectors, photovoltaics, and optoelectronic integrated circuits Concise treatments of the quantum optical properties of nitride semiconductor devices Perfect for researchers in electrical engineering, applied physics, and materials science, Group III-Nitride Semiconductor Optoelectronics is also a must-read resource for graduate students and industry practitioners in those fields seeking a state-of-the-art reference on the optoelectronics technology of group III-nitrides.
