Patent ID: 7994984
Filing Date: 2011-08-09
Classification: H01Q

Abstract:
1. An antenna apparatus, comprising: a finite ground plane; a plurality of first planar elements arranged along and on both sides of a first gap line and a second gap line that is orthogonal to the first gap line; a plurality of first linear elements to connect the finite ground plane with each of the first planar elements; an antenna element including a second linear element placed in the first gap line and a third linear element placed such that one end of the third linear element is connected to one end of the second linear element and an other end of the third linear element faces the finite ground plane; a first feeding point to supply electric power to the antenna element from the other end of the third linear element; a plurality of second planar elements arranged along and on both sides of a third gap line and a fourth gap line that is orthogonal to the third gap line in a different area from an area in which the first planar elements are arranged; a plurality of fourth linear elements to connect the finite ground plane with each of the second planar elements; a second antenna element including a fifth linear element placed in the third gap line and a sixth linear element placed such that one end of the sixth linear element is connected to one end of the fifth linear element and the other end of the sixth linear element faces the finite ground plane; and a second feeding point to supply electric power to the second antenna element from the other end of the sixth linear element, wherein a connection point of the second linear element with the third linear element is positioned in an intersection area of the first gap line and the second gap line, the first feeding point is provided in a vicinity of an edge of the finite ground plane, a connection point of the fifth linear element with the sixth linear element is positioned in an intersection area of the third gap line and the fourth gap line, the other end of the second linear element and the other end of the fifth linear element face each other, and the second feeding point is provided in a vicinity of an edge on an opposite side to an edge on which the first feeding point is provided.