The CD-ROM Download that accompanies this book, will provide a powerful interactive software program, which will enable the reader to analyze or design any RF/Microwave circuit with relative ease. This volume deals with the technical aspects of wave propagation in circuits using an engineering perspective. It is rather important to note that waves of all types, shapes, and frequencies abound all around us, and are very commonplace in our daily existence; radio waves, sound waves, sunlight, heat waves, lasers, microwaves, are just a few examples. In this book, we are laying down the essential foundation as a minimum requirement for professional engineers to understand the subject of electromagnetism and its subset "RF & Microwaves." Moreover, this book provides the technical fundamentals that should be utilized by all professional engineers for the design of all high frequency circuits with confidence and composure. This would prove to be the cornerstone of all future inventions and developments in this arena. This book simplifies the subject of electricity and electronics, particularly the high frequency electronics and RF/Microwaves, making it accessible to the general reader by bringing the fundamentals to the forefront, thus ushering in a new era of incredible developments for mankind!