| CPC H01Q 21/30 (2013.01) [H01Q 21/28 (2013.01)] | 8 Claims |

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1. An antenna structure, comprising:
a ground element;
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 second radiation element and the first radiation element substantially extend in opposite directions;
a shorting radiation element, wherein the feeding radiation element is further coupled through the shorting radiation element to the ground element;
a third radiation element, coupled to the ground element, wherein the third radiation element is adjacent to the first radiation element; and
a fourth radiation element, coupled to the ground element, wherein the fourth radiation element is adjacent to the second radiation element;
wherein the second radiation element further comprises a first extension portion, and the first extension portion is positioned at one end of the second radiation element;
wherein the third radiation element further comprises a second extension portion, and the second extension portion is positioned at a bend in the third radiation element;
wherein the first extension portion and the second extension portion substantially extend in a same direction;
wherein the first extension portion and the second extension portion are positioned on a first plane;
wherein the ground element, the feeding radiation element, the first radiation element, the shorting radiation element, and the fourth radiation element are positioned on a second plane;
wherein the first plane and the second plane are substantially perpendicular to each other.
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