This book provides an essential overview of radio wave propagation in various environments. It covers the fundamentals of linear antennas, aperture antennas, antenna arrays, and presents a range of antenna types across different frequency ranges. Designed for students specializing in Electronic Device Design and Technology (program 211000) and Infocommunications and Communication Systems (program 210700), it serves as a valuable resource for all forms of study. The material can be used by students when working on course projects, laboratory experiments, and practical assignments, as well as in preparing for the discipline "Radio Wave Propagation and Antenna Feed Systems in Radio Communications."