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 20 for “"Passive Device"”.
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Rf Low Pass Filter Design And Fabrication Using Integrated Passive Device Technology
… application has been presented. Integrated passive device technology based on GaAs substrate has been utilized to make the LPF. Schematic simulation and electromagnetic simulations are extensively used in the design process. EM simulation is used in the selection of layout design and …
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Compact modelling in RF CMOS technology
… (RF) applications. The focus of the thesis is on device compact modelling methodologies in RF CMOS. Compact models oriented to integrated circuit (ICs) computer automatic design (CAD) are the key component of a process design kit (PDK) and the bridge between design houses and foundries. In this …
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The Tissue-reduced Virtual Family Models for RF-induced Heating Evaluation of Passive Medical Implants at 1.5 T and 3 T
… concern for patients with implantable medical devices under magnetic resonance imaging (MRI) scanning. The implanted device may lead to a high temperature rise near device edges and cause tissue damage. Thus, the RF-induced heating near the device needs to be properly evaluated for the safety …
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Using detection in depth to counter SCADA-specific advanced persistent threats
… of flow-based intrusion detection systems, passive device fingerprinting, low- interaction honeypots, and traditional signature- based intrusion detection technologies provides a highly effective capacity for detecting common attack vectors used by APTs. Finally I will show how the …
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Analysis, development, and control of multi-degree-of-freedom passive haptic devices
… are key design requirements in haptic devices. Replacing conventional electric motors with passive actuators such as brakes or dampers can improve both stability and transparency as passive actuators can display a wide range of impedance while guaranteeing stability. However, passive …
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Modeling and Design of a Three-dimensional Inductor with Magnetic Core
As the demand for portable electronic devices increase, the need to replace off-chip discrete devices with on-chip devices is imperative. Inductors are one such passive device that is widely used in low noise amplifiers, oscillators, etc. Current on-chip spiral inductors suffer from large …
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An investigation of optical properties in active and passive nanophotonic devices
… work of nanostructure design for active and passive nanophotonics devices. <br/><br/>The active device part focuses on organic light-emitting diodes (OLEDs), widely used new-generation display devices. The attention is concentrated on improving the light extraction of OLED devices, and …
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Self-rolled-up membrane (S-RuM) capacitors and filters for radio frequency communication
… This technology finds wide applications in passive electronics, photonics, and neural interfaces, and achieves great device size reduction and performance enhancement. For passive electronics, devices based on S-RuM utilize electromagnetic energy well- confined in the device tubular cavity …
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A thermally efficient micro-reactor for thermophotovoltaic power generation
… and fuel cells. It is also a mechanically passive device that is virtually noiseless and less subject to wear than engines and turbines.
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Study of a Modified Friction Device for the control of civil structures
… loads input energy to the structure. Control devices can be used to dissipate this energy in a civil structure. In this research, a new semi-active dissipation device is studied: the Modified Friction Device (MFD). The MFD is a control device that consists of a spring, a viscous element and a …
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Drug delivery device for bladder disorders
… created using a reservoir-based drug delivery device. This novel passive device was designed to release drug in a predetermined manner once inside the bladder. The device also possesses a retention feature to prevent accidental voiding. The device can be implanted into and retrieved from the …
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Electronic Prayer Rug: Design and Evaluation
… nor the simple interaction associated with the passive device. This modern version of the prayer rug enhances the spiritual experience of Muslims during prayer. The electronic version also supports the display of Quran verses – enabling Muslims, for the first time, to read un-memorized parts of …
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Life-Cycle Cost-Based Optimal Seismic Design of Structures with Energy Dissipation Devices
… the use of energy dissipating damping devices to achieve the performance of a building structure in a desirable manner over all levels of seismic intensity. Since the initial motivation of performance-based design was reducing economic loss, the life-cycle cost-based optimization is …
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Characterizing Human Motor Adaptation and Learning When Using Different Occupational Exoskeletons
… understanding how individuals adapt to these devices over time remains limited, complicating effective design, training, and deployment. This dissertation addresses these gaps through studies examining motor adaptation and learning across diverse exoskeleton types and occupationally relevant …
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Exploiting Near Field and Surface Wave Propagation for Implanted Devices
… coupling biotelemetry systems for implantable devices, and presents two approaches toward an end-to-end biotelemetry system for reducing the power consumption of implanted devices at increased levels of bandwidth. By leveraging the transition zone between the near and far field, scattering in …
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Design and Evaluation of a Quasi-Passive Variable Stiffness Ankle-Foot Prosthesis to Improve Biomechanics Across Walking Speeds
… contralateral limb loading in a low-mass, quasi-passive device. This is achieved by automatically adjusting prosthesis stiffness to maximize energy storage across walking speeds. A novel quasi-passive variable stiffness ankle-foot prosthesis is presented with high resolution stiffness adjustment …
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On-chip Spiral Inductor/transformer Design And Modeling For Rf Applications
Passive components are indispensable in the design and development of microchips for high-frequency applications. Inductors in particular are used frequently in radio frequency (RF) IC's such as low-noise amplifiers and oscillators. High performance inductor has become one of the critical …
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GreenGlove: A Solar Powered Heated Glove to Help Maintain Comfortable Temperatures
… for any type of heavy and bulky power storage device. One drawback of this form of power generation is that the power that can be generated is less than the amount battery packs are capable of generating. Therefore, the focus of GreenGlove is to maintain comfortable temperatures in the glove, …
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A Variable Stiffness Energy Dissipation Device for Vibration Control of Steel Frames
<p>Structures without energy dissipation devices rely primarily on plastic or inelastic deformations to dissipate energy from earthquakes. As a result, the amount of inelastic deformations and damage level will increase as the earthquake severity increases. However, structures equipped with energy …
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Heat and mass transfer in porous materials for passive energy-conversion devices
L'abstract è presente nell'allegato / the abstract is in the attachment