This book covers the fundamentals, designs, technologies, and measurements of the building blocks of monolithic radio frequency (RF), microwave, and mm-Wave integrated circuits for applications in modern communication and radar systems. It entails an in-depth presentation of all elements needed to design monolithic integrated circuits focusing on the use of III/V semiconductor technologies such as GaAs, GaN, and the like. It includes fundamental design principles and design methodologies and techniques as well as the choice of technology to be used.