Patent ID: 8502748

Claim:
A three-dimensional dual-band antenna, comprising: a first radiation portion having a slot; a second radiation portion located under the first radiation portion and parallel with the first radiation portion, wherein the first radiation portion is operated at a first bandwidth, the second radiation portion is operated at a second bandwidth, and the second bandwidth is a higher frequency band than the first bandwidth; a connection portion connected to a first side of the first radiation portion and extended downward vertically, for connecting the first radiation portion and the second radiation portion; an impedance matching portion connected to a second side of the first radiation portion and extended downward vertically, wherein the first side and the second side are opposite to each other; and a feeding portion connected to the second side of the first radiation portion and extended downward vertically, wherein the feeding portion is for receiving a feeding signal, and the slot of the first radiation portion is in a shape of a trapezoid or a triangle whose slot diameter gradually narrows in a direction from the third side toward the first radiation portion.