The Uda-Yagi antenna, commonly known as the Yagi antenna, is a directional antenna used primarily for radio frequency communication. It consists of multiple elements, including a driven element, a reflector, and one or more directors, which work together to focus the radio waves in a specific direction. This design enhances signal strength and reception, making it popular for television and amateur radio applications. Invented by Haruji Yagi and Shintaro Uda in the 1920s, the Uda-Yagi antenna is known for its simplicity and effectiveness. Its compact size and ability to provide high gain make it suitable for various uses, including wireless communication and broadcasting. The antenna's design allows for easy installation and adjustment, contributing to its widespread adoption.