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Now showing items 1-10 of 13
An Augmented Reality Haptic Training Simulator for Spinal Needle Procedures
(2011-11-29)
Medical simulators have become commonly used to teach new procedures to medical students and clinicians. Their accessibility allows trainees to perform training whenever they desire, and their flexibility allows for various ...
Power Converters for Electric Vehicles
(2012-01-18)
This thesis presents topologies and control methods to improve the efficiency and dynamic response of Electric Vehicle (EV) power converters. There are three main converters in an EV power conditioning system: a plug-in ...
Subharmonic Mixers in CMOS Microwave Integrated Circuits
(2009-03-25)
This thesis explores the design and applications of subharmonic mixers in CMOS microwave integrated circuits. First, a 2x down-converting subharmonic mixer is demonstrated with a measured conversion gain of 8 dB using a ...
MOSFET Current Source Gate Drivers, Switching Loss Modeling and Frequency Dithering Control for MHz Switching Frequency DC-DC Converters
(2008-02-29)
The power density of a switching converter is dependent on the size of the power circuit components. Converters are operated in the hundreds of kHz to achieve high power density since the size of the converter reactive ...
Link Adaptation for Energy Constrained Networks
(2008-12-02)
Relay terminals are often used in tandem in sensor networks to lessen nodal communication burden. In this light we investigate the problem of power allocation amongst nodes in a relay network in order to maximize the overall ...
Novel Digital Controller for Multi Full-Bridge DC/DC Converter
(2007-09-27)
Distributed generation that utilizes 5-10kW Solid Oxide Fuel Cells requires power electronics to optimize the overall system efficiency while reducing the cost. The Adaptive Energy Zero-Voltage-Switching Phase-Shift-Modulated ...
Digitally Assisted Radio-Frequency Integrated Circuits
(2013-08-01)
In this thesis, three radio frequency integrated circuits (RFICs) were digitally assisted for varying signal power, frequency or both. Performance paramters were 'optimized' in the sense of obtaining the best performance ...
Procedures to Analyze and Design Decentralized, Distributed Sensor Networks for Change Detection
The emergence of the Internet of Things (IoT) has reinvigorated interest into the distributed quickest change detection problem within wireless sensor networks. Although a number of system designs addressing this problem ...
Low-Noise Mixing Circuits in CMOS Microwave Integrated Circuits
(2009-08-25)
In this thesis, three low-noise active mixing circuits are presented in CMOS technology. Mixers can be found at the front-end of almost every communication systems. However, despite many advantages the active mixers have, ...
Dynamic Spectrum Allocation for Cognitive Radio Networks: A Comprehensive Optimization Approach
(2015-10-16)
In Cognitive Radio Networks (CRNs), the role of the Medium Access Control (MAC) layer is very important since it enables Secondary Users (SUs) to access the spectrum without affecting Primary Users' (PUs) communications. ...