Patent ID: 8368600

Claim:
A dual-band antenna, provided on a substrate and comprising: a first radiator; a second radiator which is generally C-shaped and has a connecting section and a free-end portion, wherein a ground end and an input end are provided at predetermined positions of the connecting section and are respectively and electrically connected to a grounding portion and a control circuit of the substrate, and wherein the free-end portion overlaps with an orthogonal projection of the first radiator and is parallel to the first radiator; a third radiator electrically connected to the second radiator via a conductive post and being parallel to the second radiator; and a stand portion connected to the first radiator and the second radiator; wherein the substrate is a multilayer printed circuit board, the second and third radiators being provided on different layers of the substrate, the first radiator being independently provided outside the substrate, and the first, second, and third radiators being parallel to and spaced apart from one another by a predetermined distance.