In addition, I would like to thank my friend at Iowa State University, Sara Harris, the department secretary, who was always there for me and all the VLSI graduate students for being such wonderful and helpful friends.Last but not least, I would like to thank my husband and my two beautiful daughters for their love and support.x ABSTRACT Next generation wireless devices will be required to support a wide variety of commercial standards and operate over a wide range of frequency bands. Two examples that are already receiving a lot of attention are software-defined and cognitive radios. Therefore, components that are capable of operating over ultra-wide frequency ranges are required.Quadrature oscillators are a major component in any communication system. They are often