Microwave Resonator Filters for Advanced Wireless Systems

To my mother Kil Jung Lee and my father Seung Joo Lee ii ACKNOWLEDGEMENTS Getting Ph.D. was certainly a family endeavor, and my family has endured much sacrifice for the sake of my education. First I would like to thank my parents to whom my debt is simply infinite. I could not have accomplished what I did without their boundless love, sacrifice, support, and encouragement. My gratitude to my parents is more than that can be expressed in words. I also want to thank my brother, Jung Yup Lee, for taking tare of my parents while I was in America, and my wife Youn Goung Song for her love and support. During my Ph.D. study in the University of Michigan, I have been privileged to have Prof. Kamal Sarabandi as my advisor. I would like to thank him for proving me with the opportunity to conduct this Ph.D. research. I am grateful to him for his patient mentoring, supportive advising, and endless editing. I would also like to thank those who have served on my committee, Prof. I was able to begin the study on microwave engineering when I was a graduate student at his group. I would like to extend my thanks to my colleagues in the RADLAB (Radiation Laboratory) I have had throughout the years. Wonbin Hong provided me with tremendous technical support over the years. I got a lot of advice from Line van Nieuwstadt when I needed to make an important decision. Technical questions from Young Jun Song and Morteza Nick made me study fundamentals of electromagnetics and microwave engineer-iii ing. I am also thankful to my group members for their friendship. I would also like to thank RADLAB administrative staffs, for giving me opportunities to gain valuable experiences in the field of RF/microwave engineering.