What is the function of a shark fin antenna?

[DeBlakely]

Automotive shark fin antennas serve multiple purposes including intercepting and transmitting radio waves, discharging static electricity, enhancing signals, and functioning as a spoiler. They also act as FM radio antennas, GSM communication antennas, and GPS antennas. Relevant details are as follows: 1. Advantages: Shark fin antennas overcome the drawbacks of traditional telescopic rod antennas, whip antennas, and car window antennas. By applying aerodynamic principles, they effectively eliminate the airflow noise generated by conventional rod antennas, resulting in quieter operation. 2. In dry weather conditions, vehicles are prone to static electricity buildup. Previously, this issue was addressed by installing grounding strips near the exhaust pipe. With shark fin antennas, this problem is efficiently resolved. The shark fin antenna leverages the principle of electron discharge at sharp points, directing static electricity to its tail tip for release. Regardless of where the shark fin antenna is installed on the vehicle, it effectively reduces surface static electricity.