Patent ID: 9153862
Filing Date: 2015-10-06
Classification: H01Q

Abstract:
1. An antenna apparatus comprising a horizontal polarization antenna element, wherein the horizontal polarization antenna element includes: a radiation conductor including two conductor plates subjected to bending work and arranged to be opposite to each other with a specific interval therebetween, the radiation conductor having a tube shape extending in a vertical direction in whole; a ground conductor arranged in an inner space surrounded by the two conductor plates of the radiation conductor, the ground conductor being electrically grounded; and a feeding element arranged in the inner space to be along inner walls of the conductor plates in a top view, the feeding element operating as a reverse L antenna when electrical power is fed between one end thereof and the ground conductor, and feeding power to the radiation conductor by electromagnetic coupling, wherein each of the two conductor plates has a U shape in a top view, and openings of the conductor plates are arranged opposite to each other, wherein the horizontal polarization antenna element further includes a horizontal board arranged on a horizontal plane, and two vertical boards arranged to be opposite to each other across the horizontal board and to extend in the vertical direction while front surfaces are directed outward, one of the conductor plates includes conductor patterns formed on front surface sides and at one side ends of both the vertical boards, and a metal plate electrically connected to both the conductor patterns and provided to extend between the one side ends of both the vertical boards, the other of the conductor plates includes conductor patterns formed on rear surface sides and at the other side ends of both the vertical boards, and a metal plate electrically connected to both the conductor patterns and provided to extend between the other side ends of both the vertical boards, and the feeding element includes a conductor pattern formed on the horizontal board.