Patent ID: 8761705

Claim:
An antenna comprising: a differential linear antenna that comprises two antenna elements, which have a predetermined length, arranged so as to be separated from each other to be symmetrical with respect to a line that becomes a reference and provided with voltages having opposite polarities; a patch antenna having a flat plate shape which is arranged to be parallel to a plane, on which the differential linear antenna is arranged, and in which a feeding point is disposed in an area interposed between virtual planes that are perpendicular to the plane and pass through extended lines of the antenna elements; a conductive shielding frame that surrounds the differential linear antenna and is connected to a ground, wherein the conductive shielding frame is arranged on the plane on which the differential linear antenna is arranged; and a shielding post that is partly connected to the conductive shielding frame and the patch antenna, and is formed in a basket shape so as to surround the conductive shielding frame and the patch antenna.