Browsing Engineering (Faculty of) by Supervisor "Ramahi, Omar"
Now showing items 21-33 of 33
-
Metamaterials for Decoupling Antennas and Electromagnetic Systems
(University of Waterloo, 2011-04-25)This research focuses on the development of engineered materials, also known as meta- materials, with desirable effective constitutive parameters: electric permittivity (epsilon) and magnetic permeability (mu) to decouple ... -
Metasurfaces for Antennas, Energy Harvesting and Imaging
(University of Waterloo, 2018-08-03)Metamaterials are materials with artificial structures, engineered to produce electromagnetic properties not readily available in nature. Metamaterials have generated broad interest and utilization in various applications ... -
Microwave Medical Imaging Using Inverse Radon Transform and Quasi-Static Simulator
(University of Waterloo, 2022-09-26)The features of Microwave Imaging (MI) drive its potential to be widely implemented in different fields. Its high penetration depth, comfortable usage, non-ionizing nature, and low-cost operation have attracted researchers ... -
Microwave Near-Field Imaging and Material Characterization
(University of Waterloo, 2020-03-27)In recent years, microwave imaging has attracted many researchers from various fields such as medical imaging, remote sensing, and industrial ones because of its high degree of penetration, non-ionizing and safe nature, ... -
Microwave near-field probes to detect electrically small particles
(University of Waterloo, 2013-10-22)Microwave near-field probes (MNPs) confine evanescent fields to regions that are substantially smaller than the wavelength at the operation frequency. Such probes are able to resolve subwavelength features, thus providing ... -
Negative Material Inspired Microwave Water Heating System
(University of Waterloo, 2014-12-10)Microwave heating is considered as a very beneficial heating methodology for liquids because it can provide non-contact delivery of energy. Recent studies are focusing on the use of an electrically small resonator, such ... -
Non-invasive Glucose Monitoring using Microwave Sensor with Machine Learning
(University of Waterloo, 2022-04-14)Diabetes is a chronic condition that occurs when the levels of glucose are high in the blood because the body cannot produce any or enough insulin or use insulin effectively. According to the International Diabetes Federation ... -
Scalable Surfaces for Electromagnetic Energy Harvesting and Wireless Power Transfer
(University of Waterloo, 2019-10-31)The idea of collecting electromagnetic (EM) energy and converting it into various forms of useful power dates back to the early 20th century. Nikola Tesla's wireless power transfer experiments demonstrated the concept ... -
Sensitivity Enhancement of Near Field Probes Using Negative Materials
(University of Waterloo, 2009-08-25)In the last decade, design and application of negative materials have been one of the most interesting subjects in the electromagnetic research. The extraordinary properties of double negative (DNG) and single negative ... -
Theory, Design and Development of Artificial Magnetic Materials
(University of Waterloo, 2009-09-24)Artificial Magnetic Materials (AMMs) are a subgroup of metamaterials which are engineered to provide desirable magnetic properties not seen in natural materials. These artificial structures are designed to provide either ... -
UAV Detection Based on Adaptive Radar Signal Processing
(University of Waterloo, 2024-01-23)(Unmanned Air Vehicles) UAVs, commonly known as drones, have become widely available across the globe; they can be used for many useful applications, but they can also be used for illegal activities and terrorist attacks. ... -
Ultrasensitive Microwave Near-Field Sensors For Detection, Imaging, and Material Characterization
(University of Waterloo, 2018-09-25)Affordable, sensitive, selective, fast-responding, label-free sensors are currently in high demand for many of today's applications and technologies, particularly in the food industry, bio-sensing applications, and quality ... -
Wideband Rectenna System for Microwave Power Transfer
(University of Waterloo, 2018-08-14)One of the fundamental devices in Microwave Power Transfer (MPT) is the recenna or rectifying antenna, which collects the electromagnetic energy from the free space and convert it directly to a useful DC power. Although ...