This book discusses the fundamentals as well as modern approaches of microwave engineering. It outlines the processes and applications of this field in detail. Microwave engineering refers to that area of science and technology which studies the design and applications of microwave circuits and systems. This field of study is used in making satellites, radars, wireless radios, etc. This book presents researches and studies performed by experts across the globe. It attempts to understand the multiple branches that fall under this discipline and comprehend how such concepts have practical applications. This book studies, analyses and upholds the pillars of microwave engineering and its utmost significance in modern times. This text is appropriate for students seeking detailed information in this area as well as for experts.