Dual-frequency antenna, lock and two-wheeled vehicle

The embodiment of the invention discloses a dual-frequency antenna, a lock and a two-wheeled vehicle, a first radiation part and a second radiation part are arranged on a dielectric substrate, and a first feeding point and a second feeding point are utilized to feed the first radiation part at the same time. Therefore, on one hand, the second radiation sheet and the second radiation part are mutually staggered, so that the dual-frequency antenna can simultaneously meet the receiving and transmitting requirements of high-frequency signals and low-frequency signals, and the positioning precision of the dual-frequency antenna is ensured. And on the other hand, the first feeding point and the second feeding point are arranged at an interval, and when guided electromagnetic waves with different polarization directions are respectively fed into the first feeding point and the second feeding point, the circular polarization requirement of satellite positioning on radio waves can be met. And on the other hand, the du