Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 934 for “"Switches"”.
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Waferscale network switches
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Integrated Inp Photonic Switches
Photonic switches are becoming key components in advanced optical networks because of the large variety of applications that they can perform. One of the key advantages of photonic switches is that they redirect or convert light without having to make any optical to electronic conversions and vice …
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The Folded Hypercube ATM Switches
… performance asynchronous transfer mode (ATM) switches have been proposed. The majority of these switches have high performance but also high hardware complexity. Therefore, there is a need for switch designs with low complexity and high performance. This research proposes three new ATM …
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Scheduling algorithms for high-speed switches
… these requirements. Several algorithms for VOQ switches are introduced in this dissertation in order to improve upon existing algorithms in terms of implementation or QoS features. Initially, the earliest due date first matching (EDDFM) algorithm, which is stable for both uniform and non-uniform …
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RF-MEMS switches for reconfigurable antennas
… and academic labs, commercialization of RFMEMS switches has lagged expectations. These problems are connected with switch design (high actuation voltage, low restoring force, low power handling), packaging (contamination layers) and actuation control (high impact force, wear, fatique). This …
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High-index-contrast electromechanical optical switches
… networks. Several electromechanical optical switches are explored with the intent of being utilized as optical switching elements in transparent, integrated photonic networks. The electromechanical optical switches are based on high-index-contrast waveguide optics that is integrated with …
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RF MEMS switches : survey and analysis
… attention recently as a way to produce switches. The technology leverages the fabrication instruments, processing and design techniques of the mature integrated circuit (IC) industry. While MEMS technology has shown great successes in producing commercial devices like accelerometers and …
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AlGaN/GaN-based power semiconductor switches
… efficiency and high speed power semiconductor switches, thanks to their high breakdown electric field, mobility and charge density. The ability to grow these devices on large-diameter Si wafers also reduces device cost and makes them easier for wide market adoption. However, the development of …
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Network coding for speedup in switches
… between network coding and speedup in multicast switches - i.e. network coding, which is usually implemented using software, can in many cases substitute speedup, which is often achieved by adding extra switch fabrics. This bound is based on an approach to network coding problems called the …
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Designing and Fabricating MEMS Cantilever Switches
In this thesis, MEMS switches actuated using electrostatic actuation is explored. MEMS switches that are lateral switches and clamped-clamped switches are designed, fabricated, and tested in this thesis. This thesis extensively explains the process by which the MEMS Switches were designed and …
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High-performance compact gas filled spark switches
Gas filled spark switches are used extensively in pulsed power systems for their high rate of dV/dt, dI/dt, fast closing times with low jitter, and their high voltage and current capability. Recently there has been a renewed interest in designing spark switches that can operate with environmentally …
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High-Performance Gateless Iii-Nitride Microwave Switches
<p>Radio-frequency (RF) switches using Field-Effect Transistors (FETs) have low loss, fast switching speed, and simple fabrication process, which allows for simple integration with other components such as power amplifiers, phase shifters, arrays etc. Recent advancements in III-nitride …
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On the formal verification of ATM switches
Because of the difficulty of adequately simulating large digital designs, there has been a surge of interest in formal verification, in which a mathematical model of the design is proved to satisfy a precise specification. Model Checking and Equivalence Checking , which have the advantage of …
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Resonant Cavity Enhanced Photodetectors and Optoelectronic Switches
… of RCE detectors and optoelectronic switches, both experimentally and theoretically.
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Modeling optically activated high power semiconductor switches
A two-dimensional time dependent computer model of a GaAs PCSS has been developed to investigate nonuniformities in the electric field observed in the operation of a high power photoconductive semiconductor switch. The model solves the continuity equations for electrons, holes, and traps, the …
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Stochastic multiphysics modeling of RF MEMS switches
Micro-Electro-Mechanical (MEM) devices like switches, varactors and oscillators have shown great potential for use in communication devices, sensors and actuators. Electrostatically actuated switches in particular have been shown to have superior performance characteristics over traditional …
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Multi-layer, Low-crosstalk Integrated Optical Switches
… study of 3D Si-SiN-SiN tri-layer optical switches employing switch-and-select (S&S) architectures for strictly non-blocking connectivity. The 3D crossing-free waveguide shuffle eliminates in-plane intersections, significantly reducing crosstalk (as low as -51.9 dB) and insertion loss (as …
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Energy Efficient High Port Count Optical Switches
… memory space. Large-scale high-speed optical switches tend to use a rearrangeably non-blocking architecture as this limits the number of switching elements required. However, this comes at the expense of requiring more sophisticated route selection within the switch and also some forms of …
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Novel techniques in large scaleable ATM switches
… explores the research area of large scale ATM switches. The requirements for an ATM switch are determined by overviewing the ATM network architecture. These requirements lead to the discussion of an abstract ATM switch which illustrates the components of an ATM switch that automatically scale …
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Design and Optimization of Tunneling Nanoelectromechanical Switches
… However, the practical integration of NEM switches still faces challenges such as high actuation voltages, stiction, and slower switching speeds compared to CMOS. One promising strategy to mitigate these issues is the integration of a self-assembled monolayer (SAM) to create tunneling NEM …
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