It is very humbling to see how much she is willing to risk and sacrifice for the benefit of those children.ĥ 5 DEDICATION To my father Magdi Armanious: for sparking my interest in mathematics and science.Ħ 6 TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES ABSTRACT CHAPTER 1 Introduction High-Power Electromagnetic Sources Characterization of HPEM Sources HPEM Classification Based on The Bandwidth Narrowband Sources Subhyperband and Hyperband Sources Mesoband Sources Switched Oscillators Dissertation Overview CHAPTER 2 From Ultra-Wideband to Mesoband (Moderate-band) Systems Pulsed Power Sources Fast Switching Gas Switches Oil Switches Solid State Switches UWB Antennas for high power applications Mesoband Sources Damped Oscillator/Wideband Antenna Approach Wideband Transient Source/Self-resonant Antenna Approach. Her continuous outreach to children with special needs reminds me that there is more to be done in life than pursuing scientific research. Lastly, I am very thankful to my mother Nagwan Massoud for her love and support throughout the difficult process of finishing this work. Foremost, I cannot forget to mention my church family my time in Tucson was spiritually enriched by my Christian Coptic Orthodox community. I am grateful for: time spent with friends from the College of Optical Sciences, my hiking buddies and our memorable trips into the mountains, Bible-study meetings with Intervarsity group, and time spent at Caffe Luce enjoying an amazing coffee. My time at the University of Arizona was made enjoyable in large part due to the many friends and groups that became a part of my life. In this regard, I would like to thank Michael C. work would have been impossible without the funding provided by ASR Corporation, Albuquerque NM. Tyo how to turn scientific knowledge into useful research tools. In the past four years, I learned from Dr. However, it is not as easy to use such knowledge in productive research. With the advanced technology that we have today, one can easily gain knowledge in any field of science. J Scott Tyo, for his enlightenment guidance and sincere advice throughout my graduate studies at the College of Optical Sciences. SIGNED: Miena Magdi Hakeem ArmaniousĤ 4 ACKNOWLEDGEMENTS I would like to express my deepest gratitude to my advisor Dr. Requests for permission for extended quotation from or reproduction of this manuscript in whole or in part may be granted by the copyright holder. Brief quotations from this dissertation are allowable without special permission, provided that accurate acknowledgment of source is made. Scott Tyo Date: 18 August 2010ģ 3 STATEMENT BY AUTHOR This dissertation has been submitted in partial fulfillment of requirements for an advanced degree at the University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. I hereby certify that I have read this dissertation prepared under my direction and recommend that it be accepted as fulfilling the dissertation requirement. Ziolkowski Date: 18 August 2010 Date: 18 August 2010 Date: 18 August 2010 Final approval and acceptance of this dissertation is contingent upon the candidate s submission of the final copies of the dissertation to the Graduate College. Scott Tyo Date: 18 August 2010 Masud Mansuripur Date: 18 August 2010 Richard W. 1 DESIGN AND ANALYSIS OF A HIGH POWER MODERATE BAND RADIATOR USING A SWITCHED OSCILLATOR by Miena Magdi Hakeem Armanious Copyright c Miena Magdi Hakeem Armanious 2010 A Dissertation Submitted to the Faculty of the COLLEGE OF OPTICAL SCIENCES In Partial Fulfillment of the Requirements For the Degree of DOCTOR OF PHILOSOPHY In the Graduate College THE UNIVERSITY OF ARIZONA 2010Ģ 2 THE UNIVERSITY OF ARIZONA GRADUATE COLLEGE As members of the Dissertation Committee, we certify that we have read the dissertation prepared by Miena Magdi Hakeem Armanious entitled Design and Analysis of a High Power Moderate Band Radiator Using a Switched Oscillator and recommend that it be accepted as fulfilling the dissertation requirement for the Degree of Doctor of Philosophy.
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