This book provides a comprehensive overview of antenna theory, covering fundamental principles, construction, and operation of key antenna devices. It explores the radio engineering characteristics and parameters of both transmitting and receiving antennas. The text introduces the basics of antenna array theory, as well as linear and aperture antennas. It details the design principles, structural features, and main radio technical specifications of vibratory and horn antennas. Intended for undergraduate and graduate students specializing in fields such as "Design and Technology of Radio-Electronic Systems," "Electronics Design and Technology," and "Information and Communication Technologies and Systems," this book is a valuable resource for laboratory work and coursework projects. It may also benefit students in related disciplines and various educational programs seeking a solid foundation in antenna technology.