Patent ID: 7554488
Filing Date: 2009-06-30
Classification: H01Q

Abstract:
1. A planar antenna, disposed on a substrate, comprising: a metallic ground plane, laid on the substrate; a radiating part, for transmitting and receiving radio frequency (RF) signals, the radiating part comprising an open end and a first bent portion electrically connected to the open end, wherein the first bent portion improves a return loss and increases bandwidth of the planar antenna, and reduces a profile and a size of the planar antenna; an open-short transforming part, electrically connected between the radiating part and the metallic ground plane, the open-short transforming part comprising a second bent portion for reducing a profile and a size of the planar antenna; a joint portion, for connecting the open-short transforming part and the radiating part, and defining a recessed portion for improving the return loss of the planar antenna; and a feeding part, electrically connected to the joint portion, for feeding signals.