Antenna structure

An antenna structure, comprising:

• a feeding radiation element, having a feeding point;
• a first radiation element, coupled to the feeding radiation element;
• a second radiation element, coupled to the feeding radiation element, wherein the first radiation element and the second radiation element substantially extend in opposite directions;
• a third radiation element, coupled to a first grounding point;
• a fourth radiation element, coupled to the third radiation element, wherein the third radiation element and the fourth radiation element are adjacent to the second radiation element;
• a fifth radiation element, coupled to a second grounding point, wherein the fifth radiation element is adjacent to the first radiation element;
• a sixth radiation element, coupled to a third grounding point, wherein the sixth radiation element is disposed opposite to the third radiation element;
• and
• a carrier element, wherein the feeding radiation element, the first radiation element, the second radiation element, the third radiation element, the fourth radiation element, the fifth radiation element, and the sixth radiation element are disposed on the carrier element;
• wherein the fifth radiation element with an irregular shape comprises a shorting portion, a central portion, a first extension portion, a second extension portion, a third extension portion, and a fourth extension portion, the central portion is coupled through the shorting portion to the second grounding point, and the first extension portion, the second extension portion, the third extension portion and the fourth extension portion are coupled to the central portion.