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Extraction of Electromagnetic Properties of Metamaterials with Branch Compensation from Phase Tracking
(North Dakota State University, 2020)
In the field of electromagnetism, there are materials known as metamaterials which exhibit unique properties that can be exploited. Permittivity, defined as capacitance per meter, of a metamaterial can vary over frequency ...
Interior Permanent Magnet Synchronous Motor Demagnetization Fault Modeling and Analysis by Using Dynamic Phasors Model
(North Dakota State University, 2014)
Interior permanent magnet synchronous motor (IPMSM) has been widely used in hybrid electric vehicles (HEVs) since the high power density and efficiency. However, the primary drawback of IPMSM is the demagnetization phenomenon ...
Energy Efficient Data Centers for On-Demand Cloud Services
(North Dakota State University, 2015)
The primary objective of the Data Centers (DCs) is to provide in-time services to the cloud customers. For in-time services, DCs required an uninterruptable power supply at low cost. The DCs’ power supply is directly linked ...
High-Power, High-Efficiency, Multi-Functional CMOS Radio Frequency Integrated Circuit for Wireless Communication of Unmanned Aircraft System
(North Dakota State University, 2017)
Recently the Unmanned Aircraft System (UAS) has become very popular due to its current and projected opportunities in diversified applications from surveillance to security to militry. The Federal Aviation Administration ...
Effect of Caffeine and a Preworkout Supplement on Heart Rate Variability Before and After Exercise
(North Dakota State University, 2016)
Cardiovascular health is negatively affected by overactivity of the sympathetic nervous system (SNS) during rest. Heart rate variability (HRV) has been used to predict SNS activity. The study investigated effects of a ...
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 ...
Design and Analysis of New Printed Wideband Antennas for Wireless Applications
(North Dakota State University, 2014)
In this study a simple method to develop a wideband antenna is proposed. With this new technique a dipole antenna with a 48% frequency bandwidth is transformed to achieve a 120% frequency bandwidth for a voltage standing-wave ...
A Far-Field Radio Frequency Experimental Exposure System and 31 Day Exposure Experiment on Understanding Mice
(North Dakota State University, 2015)
Many studies have been performed on exploring the effects of radio frequency energy on biological function in vivo. In particular, gene expression results have been inconclusive due, in part, to a lack of a standardized ...
Viewer-Aware Intelligent Mobile Video System for Prolonged Battery Life
(North Dakota State University, 2017)
In the modern society, mobile is gradually going to become all about video streaming. The main reasons of video growth are mobile devices such as smartphones and tablets which enable people to have access to videos they ...
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 ...