The course is meant to provide a thorough coverage of advanced principles of electromagnetic theory with focus on transmission line sub-systems and high frequency data transmission. Besides enhancing general electromagnetic theory covered in previous courses. It introduces the fundamental of high frequency circuit analysis and design, from electromagnetic theory to microwave systems. Starting with a concise presentation of the electromagnetic theory, the course leads to passive and active microwave circuit. It also provides the concept of wave propagation in different transmission media and the wave reflection from a media interface. The use of the Smith Chart, understanding of different concepts of impedance matching and optical properties of electric fields.