General concepts of electromagnetic fields. Integral and differential form of Maxwell 's equations. The singularity and sources of fields. Definitions of potential. General theorems of electromagnetic fields. The static and quasistatic electric field. Poisson and Laplace equation. The development of potential by multipole. Energy and forces. Analytical and approximate methods for solving electrostatic problems. Electric field of time constant current. Time constant magnetic field. Analytical and approximate methods for solving the problem of time-constant magnetic fields. Slowly varying electromagnetic fields. General terms and electromagnetic induction. Surface effect and proximity effect. The propagation of electromagnetic waves. Uniform plane waves in a homogeneous medium (perfect dielectric, imperfect dielectric, good conductor and ionized gases). Velocity of phase propagation and velocity of group propagation. Reflection and refraction of plane waves. Guided electromagnetic waves (general theory, lines and waveguides). Radiation, diffraction and scattering of electromagnetic waves. Basic concepts of radiation transmitting and receiving antennas. Radiation from the aperture; diffraction and scattering of electromagnetic waves.