Patent ID: 8325095

Claim:
An antenna element comprising: a first antenna element in which at least three surfaces of a substantial rectangular parallelepiped are defined by: a substantially rectangular first conductor plate arranged at a predetermined space apart from a ground plate; a substantially rectangular second conductor plate sharing one widthwise side of the first conductor plate and arranged at an angle of about 90° with respect to the first conductor plate; a substantially rectangular third conductor plate sharing another widthwise side of the second conductor plate opposing the widthwise side shared by the first conductor plate and the second conductor plate, and arranged at an angle of about 90° with respect to the second conductor plate; and an electric feeding conductor connected to the first conductor plate and a corner of the ground plate and configured to feed electric power from a corner of the ground plate to the first conductor plate; and a second antenna element in which at least three surfaces of a substantial rectangular parallelepiped are defined by: a substantially rectangular fourth conductor plate connected by way of a resonance circuit to the first antenna element at a portion thereof apart from a feeding point of the first antenna element; a substantially rectangular fifth conductor plate sharing one side of the fourth conductor plate and arranged at an angle of about 90° with respect to the fourth conductor plate; and a substantially rectangular sixth conductor plate sharing another side of the fifth conductor plate opposing the side of the fifth conductor plate shared by the fourth conductor plate, and arranged at an angle of about 90° with respect to the fourth conductor plate.