Antenna structure and electronic device

An electronic device, comprising:

• a metal mechanism element;
• and
• an antenna structure, comprising:
• a coaxial cable, comprising a central conductor and a conductive housing, wherein the central conductor is coupled to a feeding point, and the conductive housing is coupled to a first grounding point;
• a first radiation element, coupled to the feeding point, wherein the first radiation element is adjacent to the conductive housing;
• a second radiation element, coupled to a second grounding point, wherein the second radiation element is adjacent to the conductive housing;
• a connection radiation element, coupled between the first radiation element and the second radiation element, wherein the connection radiation element is coupled to a connection point on the conductive housing;
• a third radiation element, coupled to the connection radiation element;
• and
• a nonconductive support element, wherein the coaxial cable, the first radiation element, the second radiation element, the connection radiation element, and the third radiation element are disposed on the nonconductive support element;
• wherein the nonconductive support element is disposed on the metal mechanism element;
• wherein the first radiation element comprises a first segment and a second segment coupled to each other, an angle is formed between the first segment and the coaxial cable, and the second segment is substantially parallel to the coaxial cable.