An antenna is a device that helps transmit and receive radio waves, which are used for communication. It can be found in various forms, such as the rabbit ears on a television or the cellular antennas on cell towers. Antennas convert electrical signals into radio waves and vice versa, allowing us to enjoy services like radio, television, and mobile phone communication. Different types of antennas serve different purposes. For example, a satellite dish is designed to receive signals from satellites in space, while a Wi-Fi antenna helps connect devices to the internet wirelessly. Understanding antennas is essential for improving communication technology and ensuring better connectivity.