The design of high-frequency circuits has been made more difficult, and increasingly important, by semiconductor scaling to the nanoscale. Cicruit designers with an effective understanding of high-frequency circuit design are in increasing demand, especially with new techniques being realized. This textbook is a design-intensive overview of high-freqency integrated circuits for wireless and broadband systems. It has a unique approach by emphasizing the link between device and circuit performance, and for the first time in a textbook, layout techniques to maximize both device and circuit performance are described. Step-by-step design methods for wireless and wireline circuit bulding blocks are presented. Practical assignments and projects on RF or optical fiber circuits using nanoscale CMOS, SiGe BiCMOS and III-V technologies are included. This book is suitable as a supplementary text and practical design guide for senior undergraduate and graduate students, and practising engineers.