Patent ID: 7576697

Claim:
A dual polarization antenna device for creating a dual band function, comprising: a first dielectric body; a patch layer formed on a top surface of the first dielectric body; a first phase difference changing structure formed on the patch layer; a second dielectric body; a common metal layer formed between the first dielectric body and the second dielectric body; a ground layer formed on a bottom surface of the second dielectric body; a second phase difference changing structure formed in an inner portion and on the bottom surface of the second dielectric body, the second phase difference changing structure including a metal leading wire and an antenna pin, the metal leading wire being formed on a bottom surface of the second dielectric body and insulated from the ground layer; a first antenna feed pin penetrating the first dielectric body and the second dielectric body in sequence; and a second antenna feed pin penetrating the second dielectric body, one side of the metal leading wire being electrically connected with a bottom side of the second antenna feed pin, and the other side of the metal leading wire being electrically connected with the antenna pin; wherein the first dielectric body, the patch layer, the first phase difference changing structure, the common metal layer, and the first antenna feed pin are combined together to form an upper polarization antenna structure; wherein the second dielectric body, the common metal layer, the second phase difference changing structure, and the ground layer are combined together to form a lower polarization antenna structure; whereby, the upper polarization antenna structure and the lower polarization antenna structure are combined to create both the dual polarization and the dual band functions.