Theory of Antennas

The theory of antennas explains how they generate and receive electromagnetic signals for wireless communication. Essentially, antennas transform electrical signals into radio waves that travel through the air and, vice versa, capture radio waves to convert back into electrical signals. Their design—shape, size, and material—affects how well they send or receive signals, including their directionality and coverage area. Understanding these principles allows engineers to optimize antennas for different applications like radio, television, cell phones, and satellites, ensuring efficient and reliable wireless communication.