Patent ID: 7518557

Claim:
An antenna, comprising: a transmission element, located on a first plane, wherein the transmission element is T shaped, and comprises a first transmission portion and a second transmission portion and the second transmission portion is perpendicular to the first transmission portion and connected to an end thereof; a signal line, electrically connected to the first transmission portion; a ground element, located on a second plane parallel to the first plane; a ground line, electrically connected to the ground element; a first parasitic element, connected to the ground element, located on the second plane, wherein the first parasitic element comprises a first section and a second section, the first section perpendicular to the second section, the first section connected to the ground element, the second section extending in a first direction, the second transmission portion located between the second section and the first transmission portion, and a first gap is formed between the second section and the second transmission portion.