This textbook presents the fundamental concepts and theories in electromagnetic theory in a very simple, systematic, and comprehensive way. The book is written in a lucid manner so that they are able to understand the realization behind the mathematical concepts which are the backbone of this subject. All the subject fundamentals and related derivations are discussed in an easy and comprehensive way to make the students strong about the basics of the electromagnetic theory. The philosophy of presentation and material content in the book is based on concept-based approach toward the subject. The key features also lies in the solutions of several interesting numerical problems so that the students should have the idea of the practical usages of the subject. The book benefits students who are taking introductory courses in electromagnetic wave and field theory for applications in communication engineering.