Date of Award
Fall 2009
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Electrical & Computer Engineering
Program/Concentration
Electrical Engineering
Committee Director
Shu Xiao
Committee Member
Karl H. Schoenbach
Committee Member
Juergen F. Kolb
Call Number for Print
Special Collections LD4331.E55 M54 2009
Abstract
Bioelectrics and microwave imaging requires an ultra-wideband (UWB) antenna to deliver intense, short electromagnetic pulses into biological targets for the purpose of therapy and imaging. Two antennas with different focal distances, predicted by a two dimensional model, have been designed for focusing electromagnetic radiation in the near field.
Focusing is achieved through the use of prolate spheroidal reflector antennas with a conical wave launcher submerged in water. For an ultra-wideband feed signal, with a rise time of 200 picoseconds, the maximum electric field was found to be close to the edge of the reflector, a result that differs from the modeled results. When narrowband signals of 900 MHz and 1500 MHz are fed to the antenna, electric fields have been shown to focus near the focal point.
Rights
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DOI
10.25777/8f15-c005
Recommended Citation
Migliaccio, Mark A..
"Focusing Electromagnetic Radiation in Dielectric Media"
(2009). Master of Science (MS), Thesis, Electrical & Computer Engineering, Old Dominion University, DOI: 10.25777/8f15-c005
https://digitalcommons.odu.edu/ece_etds/443
Included in
Bioelectrical and Neuroengineering Commons, Biomedical Commons, Electromagnetics and Photonics Commons, Materials Science and Engineering Commons