Patent ID: 7859466

Claim:
A dual-band antenna disposed on a substrate for transceiving electromagnetic signals of different frequencies, comprising: a grounded portion; a feeding portion adjacent to the grounded portion, for feeding signals; and a radiation body electronically connected to the feeding portion, comprising: a first radiation portion, comprising a first free end, a first connecting end electronically connected to the feeding portion, and a serpentine portion between the first free end and the first connecting end; and a second radiation portion, comprising a second connecting end electronically connected to the first connecting end, and a second free end, wherein the first free end and the second free end face each other and a gap is formed therebetween; wherein the first radiation portion and the second radiation portion collectively define a hole at a center of the radiation body, two opposite circumambient sides of the hole extending straightly while the rest circumambient sides of the hole extending curvilinearly.