A Yagi antenna is a type of directional antenna commonly used in radio communications. It consists of multiple elements, including a driven element, a reflector, and one or more directors. This design allows the antenna to focus signals in a specific direction, making it effective for long-distance communication. Yagi antennas are popular for various applications, including television reception and amateur radio. Their ability to enhance signal strength and reduce interference makes them a preferred choice for users needing reliable performance in specific directions.