Antenna structure with metal portion coupled to radiation and grounding portions and electronic device having the same

An antenna structure comprising:

• a feeding source;
• a main radiation portion signally connected to the feeding source;
• a metal portion spaced apart from the main radiation portion by a first gap;
• and
• a grounding portion spaced apart from the metal portion by a second gap and spaced apart from the main radiation portion by a third gap;
• wherein the main radiation portion couples with the metal portion via the first gap, and the grounding portion couples with the metal portion via the second gap;
• wherein the antenna structure further comprises:
• a floating portion connected to the metal portion and disposed between the main radiation portion and the metal portion and disposed between a third segment of the grounding portion and the metal portion.