Antenna structure

Provided is an antenna structure. The antenna structure comprises a metal mechanism part, a dielectric substrate, a feed-in radiation part and a coupling radiation part, the metal machine component is provided with a slotted hole, and the slotted hole is provided with a first closed end and a second closed end; the dielectric substrate is provided with a first surface and a second surface which are opposite to each other; the feed-in radiation part is coupled to a signal source and is arranged on the second surface of the dielectric substrate, and the feed-in radiation part is provided with a first vertical projection on the metal mechanism component; the coupling radiation part is coupled to a grounding potential and is arranged on the first surface of the dielectric substrate, and the coupling radiation part is provided with a second vertical projection on the metal mechanism part; wherein the second vertical projection of the coupling radiation part is at least partially overlapped with the first vertical