Browsing Electrical & Computer Engineering Masters Theses by Title
Now showing items 1-20 of 84
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An Active Power Supply Filter with Ultra Wide Bandwidth
(North Dakota State University, 2016)An active transformerless common mode filter is designed for use with switching mode power supplies with a switching frequency greater than 1MHz. The filter utilizes an amplifier in a voltage sensing current adjusting ... -
An Analysis and Improvement of Brushless DC Motor Control System
(North Dakota State University, 2013)Trapezoidal Back-EMF (Brushless DC) motors are gaining increasing importance in automotive industries, HVAC applications, home appliances etc. Traditionally, Brushless DC motors are commutated electronically using position ... -
The Analysis of Noise Voltage Coupling Between Right-Handed and Meta-Materials Transmission Lines on Printed Circuit Boards
(North Dakota State University, 2013)An important consideration of RF circuitry in terms of Electromagnetic Compatibility is the correct modeling of the coupling between printed transmission lines. This is very important because the coupled noise voltages ... -
Automating the design of deep learning models using neural architecture search for medical image classification
(North Dakota State University, 2024)Designing Deep Learning (DL) models for medical image classification tasks poses significant challenges, demanding substantial expertise owing to the intricate nature and critical importance of the undertaking. Creating a ... -
An Autonomous Reconfigurable Antenna
(North Dakota State University, 2019)Today’s wireless communications involve more antenna capabilities while occupying the same amount of space. Antennas are able to operate at multiple frequencies [1]-[2], change polarizations [6], have selectable radiation ... -
Calculating Cardiovascular Lumped-Parameter Model Values by Injecting Small Volume Perturbations in an Isovolumic Heart
(North Dakota State University, 2011)Diagnosing cardiac patient problems contains many uncertainties, and to fully diagnose the patient's condition usually requires a lengthy drug regimen to see what works and what does not. Compounding this problem is that ... -
The Capacity Region of the Gaussian Z-Interference Channel with Gaussian Input and Weak Interference
(North Dakota State University, 2016)We consider a wireless communication scenario with two transmit-receive pairs where each of the transmitters has a message for its corresponding receiver and only one of the receivers face interference from the undesired ... -
Capacity Region of Two Interfering Mimo Multiple Access Channels With Strong Interference
(North Dakota State University, 2015)We consider a communication network, where two mutually interfering 2-user MIMO Multiple Access Channels (MAC) operate simultaneously via the same time-frequency space, and characterize the capacity region of this network ... -
The Capillary-Centric Model of Coupling-As-Thermodynamics
(North Dakota State University, 2015)Models of ventricular-arterial coupling (VAC) have historically described the heart as a function of its energetic interaction with the arterial system. However, these models either represent the dynamic, adaptive ... -
CMOS Phase Shifter for Conformal Phased Array Beamformer Applications
(North Dakota State University, 2015)A vector modulator based phase shifter is developed using 0.18um CMOS process at S-band frequency to be integrated into a conformal phased array antenna to recover the desired radiation pattern in the entire 360° range. ... -
Content Dissemination Schemes for Mobile Clouds: Modeling, Analysis, and Verification
(North Dakota State University, 2014)In this work, we capitalize on our previous work on the Hybrid Scheme for Message Replication (HSM) for opportunistic networks, to develop two content dissemination schemes for mobile clouds, namely, the Forecast and Relay ... -
A Corrective Strategy for Voltage Regulation in Distribution Grids with Plug-in Hybrid Electric Vehicles
(North Dakota State University, 2013)The increasing integration of Plug-in Hybrid Electric Vehicles (PHEV) poses unique challenges for voltage and frequency regulation in electric distribution grids. The mobility and variability due to PHEV loads exacerbates ... -
Damping Interarea Oscillations in Power Systems with DFIG
(North Dakota State University, 2011)With rapid depletion of fossil fuels and increasing environmental concerns, the trend to capture renewable energy, especially through wind energy resources, is increasing. The doubly fed induction generator (DFIG) is the ... -
Dc'sign of Piezoelectric Energy Harvesting and Supercnpacitor Charging Circuits Using Optimized Duty-Cycle of Buck Converter
(North Dakota State University, 2009)Energy harvesting has been proved to be an innovative solution to replace the batteries in remote power supply applications. Unfortunately, the limited capacity aucl low efficiency of power conversion restrict the practical ... -
The Design and Analysis of a Conformal Spiral Antenna Structure for an Ultra-Wide-Band Radar System
(North Dakota State University, 2016)This thesis explores the design, simulation, and analysis of two conformal spiral antenna structures that are used for an ultra-wide-band (UWB) bistatic radar. The radar antenna system operates over a frequency range ... -
The Design and Analysis of a Microstrip Line Which Utilizes Capacitive Gaps and Magnetic Responsive Particles to Vary the Reactance of the Surface Impedance
(North Dakota State University, 2019)This thesis presents the work of using magnetic responsive particles as a method to manipulate the surface impedance reactance of a microstrip line containing uniform capacitive gaps and cavities containing the particles. ... -
Design of a Reconfigurable Pulsed Quad-Cell for Cellular-Automata-Based Conformal Computing
(North Dakota State University, 2011)This paper presents the design of a reconfigurable asynchronous unit, called the pulsed quad-cell (PQ-cell), for conformal computing. The conformal computing vision is to create computational materials that can conform to ... -
Design of High Power Density Switched Capacitor DC-DC Converter
(North Dakota State University, 2017)Design and implementation of high power density and high efficiency dc-dc converters has been a primary component for reducing energy cost. Traditionally dc-dc converters are composed with silicon based technology that has ... -
Designing of a Small Wearable Conformal Phased Array Antenna for Wireless Communications
(North Dakota State University, 2012)In this thesis, a unique design of a self-adapting conformal phased-array antenna system for wireless communications is presented. The antenna system is comprised of one microstrip antenna array and a sensor circuit. A 1x4 ... -
A Dual-Band Antenna Enabled Using a Complimentory Split Ring Resonator (CSRR) Placed in the Ground Plane
(North Dakota State University, 2019)The microstrip patch antenna is regarded as one of the key components for compact, low cost RF communications and wireless power techniques. In some instances, there are requirements that a system communicate on a different ...