| CPC H01Q 9/16 (2013.01) [H01Q 5/25 (2015.01)] | 11 Claims |

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1. An antenna device, comprising:
a differential-line, comprising a first line and a second line;
a first metal, coupled to the first line; and
a second metal, coupled to the second line;
wherein the first metal and the second metal have different shapes and/or different sizes, the first metal and the second metal form an asymmetric dipole, the first metal has a first circular slot disposed therein and the second metal has a second circular slot disposed therein, and sizes of the first circular slot and the second circular slot are different.
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