Patent ID: 7002521
Filing Date: 2006-02-21
Classification: H01Q

Abstract:
1. An antenna apparatus for wireless devices, comprising: a ground plane; an antenna element that has a first resonating point corresponding to a first frequency bandwidth and a second resonating point corresponding to a second frequency bandwidth different from the first frequency bandwidth; a feeding section that performs unbalanced feeding to the antenna element; a first parasitic element that is provided near the antenna element and the ground plane and positioned on an opposite side from a body of a user with respect to the ground plane while communication is in progress and that has a length to operate as a director in the first frequency bandwidth; and a second parasitic element that is provided near the antenna element and the ground plane and positioned on the opposite side from the body of the user with respect to the ground plane while communication is in progress and that has a length to operate as a director in the second frequency bandwidth.