Devices designed to receive radio frequency signals for various vehicle systems, including radio, GPS navigation, and cellular communication. They convert electromagnetic waves into electrical signals, enabling the vehicle to receive broadcasts, location data, and network connectivity. Antennas come in various forms, from traditional whip antennas to modern shark fin designs, each optimized for specific frequency ranges and applications. They play a crucial role in ensuring reliable reception and connectivity for in-vehicle entertainment, navigation, and communication systems.