Patent ID: 6933902

Claim:
A dual-frequency antenna, directly printed onto a printed circuit board, comprising: a dielectric substrate; a coplanar wave guide wire, printed on a side of said dielectric substrate and using one end as a signal input end; a ground metal surface; printed onto a surface on the same side of said coplanar wave guide wire and at a position corresponding to the periphery of said coplanar wave guide wire, and said ground metal surface keeping a specific distance from said coplanar wave guide wire; wherein another end of said coplanar wave guide wire being extended outside said ground metal surface and having a radiating member extended out from a side along the direction of its longitudinal axis for receiving a first operating frequency and a meandered conductive wire extended out from another side at the end of said longitudinal axis; and another radiating member being extended out from the end of said meandered conductive wire for receiving a second operating frequency.