• I would like to first thank my advisor, Bobby Weikle, not only for his support and patience over the years, but also for his outstanding teaching. His microwave engineering class is the origin of my interest in this field, which set me on the path that led to this work. • I would like to thank Scott Barker and Art Lichtenberger for countless helpful discussions throughout the entirety of this work. • I am especially appreciative of the hard work of Chunhu Zhang and Naser Alijabbari in the development and implementation of fabrication processes that made this work possible. • I would like to thank Acar Isin for his company in the FIR lab throughout the many hours of testing, and for his generous time and effort machining the many miscellaneous parts and fixtures needed for experiments throughout this work. • I would like to thank the developers of scikit-rf for providing an incredibly useful tool that has saved innumerable hours of my time. • Finally, I would like to thank my family and friends. The time spent with you outside of the lab has been an invaluable part of this journey.