Basics of technical electrodynamics. Fundamentals of analysis and synthesis of electronic circuits. The book examines the foundations of engineering electrophysics: reflection, refraction and diffraction in isotropic media of linear circuits, features of the propagation of electromagnetic waves in anisotropic crystals; electromagnetic fields in nonlinear media. The principles of operation of elements of waveguide and antenna systems, hollow resonators, non-reciprocal devices with ferrites, electro-optical modulators, magneto-hydrodynamic generators, molecular and quantum electronics devices are described.