This book is for senior undergraduate/first-year graduate students specializing in one or more of the technologies based on electromagnetics. Composed of three parts, it begins with the electromagnetics of bounded simple media, moves on to electromagnetic equations of complex media, and then covers electromagnetic computation. The author takes a modern approach by using commercial software such as MATLAB#xAE; and FDTD methods and provides a strong base of conceptual mathematical aspects. The material strikes a balance between theory, intuitive approximate solutions, and the use of commercial software and interpretation of solutions. Case studies and practical examples are presented throughout the text.