To design and develop fast and effective microwave wireless systems today involves addressing the three different ‘levels’: Device, circuit, and system. This book presents the links and interactions between the three different levels rather than providing just a comprehensive coverage of one specific level. With the aim of overcoming the sectional knowledge of microwave engineers, this will be the first book focused on explaining how the three different levels interact by taking the reader on a journey through the different levels going from the theoretical background to the practical applications.Explains the links and interactions between the three different design levels of wireless communication transmitters: device, circuit, and systemPresents state-of-the-art, challenges, and future trends in the field of wireless communication systemsCovers all aspects of both mature and cutting-edge technologies for semiconductor devices for wireless communication applicationsMany circuit designs outlining the limitations derived from the available transistor technologies and system requirementsExplains how new microwave measurement techniques can represent an essential tool for microwave modellers and designers