The Yagi-Uda antenna, commonly known as a Yagi antenna, is a directional antenna used primarily for radio frequency communications. It consists of multiple elements: a driven element, a reflector, and one or more directors. The arrangement of these elements allows the antenna to focus signals in a specific direction, enhancing its gain and range. Yagi antennas are popular in various applications, including television reception and amateur radio. Their design makes them effective for long-distance communication, as they can pick up signals from far away while minimizing interference from unwanted sources.