RF (radio frequency) refers to the range of electromagnetic waves that fall between 3 kHz and 300 GHz. This spectrum is used for various forms of communication, including radio, television, and cellular networks. RF signals can travel through the air and can be modulated to carry information over long distances. RF technology is essential for wireless communication systems, enabling devices like smartphones and Wi-Fi routers to connect and transmit data. It works by converting information into radio waves, which are then transmitted and received by antennas. This technology plays a crucial role in modern connectivity and communication.