Browsing Auburn Theses and Dissertations by Author "Baginski, Michael"

Now showing items 1-20 of 21

A 2.45 GHz Frequency-Selective Rectenna for Wireless Energy Harvesting

Ashtari, Reza (2016-05-16)

As the emphasis placed on renewable energies has grown over recent years, a necessity for innovative methods of providing alternative energy sources has emerged. With most modern communication systems utilizing radio ...

A 4.7 Tesla 4-Channel Transmit and Receive MRI Quadrature Birdcage Coil Design and Fabrication for Monkey Head imaging

Sun, Xiaotong (2013-07-10)

Magnetic Resonance Imaging (MRI) is an image modality used for clinical diagnosis as well as general imaging research. Functional magnetic resonance imaging or functional MRI (fMRI) is an MRI procedure that measures brain ...

Ambiguous Energy Suppression in Encryption Derived Pseudo-Random BPSK Radar Signals

Kamrath, Luke (2021-12-01)

In this thesis, a pseudo-random binary phase shift keying (BPSK) radar signal is developed using Advanced Encryption Standard (AES-192). The primary objective of this encryption based BPSK (E-BPSK) signal is to provide a ...

Analysis, Design and Construction of an LLC Resonant Converter

Pu, Shi (2016-05-02)

The trend in DC/DC converters development is toward higher frequency, power density and efficiency. The traditional hard-switched converter is limited in switching frequency and power density. The phase-shift full-bridge ...

Broadband Radio Frequency Transmitter for Magnetic Resonance Imaging

Lu, Hai (2015-07-14)

In Magnetic Resonance Imaging (MRI) application, radio frequency (RF) coils play an important role to excite the nuclei inside the imaging subject and receive MR generated signals. To achieve optimal transmit efficiency/receive ...

Deep Learning Methods Using Levenberg-Marquardt with Weight Compression and Discrete Cosine Transform Spectral Pooling

Smith, James (2018-04-18)

State-of-the-Art Machine Learning methods achieve powerful results on practical problems in all data-driven industries. As these methods are improved, the hardware and training time necessary to implement them have grown ...

Design and Characterization of a Novel Filling Yarn Insertion System for Weaving Machines

Meeks, Steven (2012-04-11)

Weaving is a textile manufacturing process in which weft yarns are inserted by machines through a gap in the warp yarns called a shed to form a woven fabric through interlacing. The filling insertion systems that are ...

Electromagnetic induction systems for discrimination among metallic targets

Chilaka, Sailaja (2006-05-15)

This dissertation discusses the ability of time- and frequency-domain electromagnetic induction (EMI) systems to discriminate unexploded ordnance (UXO) from clutter. The chief contribution of this work is to demonstrate ...

Fast Estimation of Specific Absorption Rate for Magnetic Resonance Imaging

Shao, Yu (2015-07-02)

Specific absorption rate (SAR) is a main safety concern in magnetic resonance imaging (MRI). The radio frequency (RF) power deposition and SAR level have a significant impact on RF coil and pulse design. In high field MRI, ...

Finite Element Analysis of the Mesosphere's Electromagnetic Response to Large Scale Lightning Associated with Sprites and other Transient Luminous Events

Allgood, Michael (2008-05-15)

In this research, a numerical investigation of high altitude sprites and other mesospheric Transient Luminous Events induced by lightning is presented. A Finite Element Model is created using equations based on a modified ...

Hybrid Learning of Feedforward Neural Networks for Regression Problems

Wu, Xing (2014-12-12)

Inspired by the structure and functional aspects of the biological neural networks, the Artificial Neural Network (ANN) is a very popular model in the machine learning fields to learn complex relationships in the data. ...

Improved Nelder Mead’s Simplex Method and Applications

Pham, Nam (2012-03-27)

Derivative free optimization algorithms are often used when it is difficult to find function derivatives, or if finding such derivatives are time consuming. The Nelder Mead’s simplex method is one of the most popular ...

A Modified Genetic Algorithm for Design Peak Pulse Power in Nonlinear Transmission Lines

Lu, Hai (2011-04-29)

Non-linear transmission lines (NLTL) have become increasingly popular as a way to develop very high frequency, wide band waveforms that offer extremely fast rise times usually unobtainable by any other method. The applications ...

Neuro-Fuzzy System with Increased Accuracy Suitable for Hardware Implementation

Govindasamy, Kannan (2009-05-15)

Fuzzy controllers are easy to design for complex control surfaces but produce rough control surfaces which might lead to unstable operation. On the other hand neural controllers are hard and complex to train but they produce ...

Novel Techniques for the Design and Characterization of Electromagnetic Devices with Application to Multilayer Structures and Waveguide Filters

Faircloth, Daniel (2006-05-15)

In this work, optimization methods are presented for the analysis of inverse and design problems in electromagnetics. The current and future demands placed on design engineers necessitate the hybridization of forward ...