This book summarizes recent achievements and the state of the art in microwave power engineering through papers/chapters written by the respective experts. It presents a broad picture of the field, ranging from hot research topics to emerging practical technologies and applications. The text is supplemented by a CD collection of 15 computer models developed by the contributors, imitating either entire systems or their components. This provides readers with direct access to the core of the related studies, facilitating their integration into cutting-edge scientific and engineering activities in the field.