1 Electric and Magnetic Fields and Waves
1.1 Brief Overview
Electromagnetic waves always consist of two orthogonal vectorial components, the electric and magnetic fields, whether they are in wireless or guided media. They are normally induced by the excitation from a time-varying source. Thus, in this chapter the time-varying electric and magnetic (EM) fields are described. That means the interdependence and dynamics of the electromagnetic fields and the formation and propagation of plane waves are assumed, which is important for the radiation, guiding, and propagation through either wireless or guided media. Essential fundamental understandings of the vector analyses are given.
The word field has been commonly used in several textbooks and ...
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