The Yagi-Uda antenna, commonly known as a Yagi antenna, is a directional antenna that consists of multiple elements: a driven element, a reflector, and one or more directors. It is designed to focus radio waves in a specific direction, making it ideal for applications like television reception and amateur radio. Yagi antennas are popular due to their high gain and relatively simple construction. They can be made from materials like aluminum or copper and are often mounted on a mast or tower. Their design allows for improved signal strength and clarity by reducing interference from unwanted sources.