Antenna structure and electronic device

An electronic device comprising an antenna structure, wherein the antenna structure comprises a first antenna and a second antenna, and

• the first antenna comprises:
• a first radiation part arranged on a first surface of a mainboard and located on a first side of a metal grounding plane;
• a first external metal strip, wherein one end of the first external metal strip is fixed on a second surface of the mainboard and electrically connected to the first radiation part, another end of the first external metal strip is suspended and extends along an outside direction of the mainboard, and the first external metal strip is coupled with the first radiation part to excite a first operating frequency band;
• a first grounding extension part, wherein one end of the first grounding extension part is electrically connected to the first side of the metal grounding plane and the first radiation part, another end of the first grounding extension part is suspended, and the first grounding extension part is coupled with the first radiation part to excite a second operating frequency band and a third operating frequency band;
• the second antenna comprises:
• a second radiation part arranged on the first surface of the mainboard and located on the first side of the metal grounding plane;
• a second external metal strip, wherein one end of the second external metal strip is fixed on the second surface of the mainboard and electrically connected to the second radiation part, another end of the second external metal strip is suspended and extends along the outside direction of the mainboard, and the second external metal strip is coupled with the second radiation part to excite the first operating frequency band;
• a third radiation part located on a second side perpendicular to the first side of the metal grounding plane, wherein one end of the third radiation part is vertically connected to the second radiation part, another end of the third radiation part is suspended;
• a second grounding extension part, wherein one end of the second grounding part is electrically connected to the second side of the metal grounding plane, another end of the second grounding extension part is suspended, and the second grounding extension part is coupled with the third radiation part to excite the second operating frequency band and the third operating frequency band.