| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna device that can receive a stable reception signal even when incoming wave polarization is varied due to motion of a propagation environment or a human.SOLUTION: An antenna device has: an antenna unit 10 having three antenna elements which are perpendicular to one another; a selecting unit 11 for selecting two antenna elements out of the three antenna elements on the basis of a direction along which the antenna unit 10 is moved; and a combination unit 12 for combining and outputting reception signals of the two antenna elements selected by the selecting unit 11 by using a weighting function defined by a variable representing the gradient of one of the two antenna elements when the condition that one of the two antenna elements is located at a first position on the plane formed by the two antenna elements is set as a basis, and the ratio of the reception powers of incoming waves arriving at the two antenna elements. The combination unit 12 calculates, as the ratio of the reception powers, the ratio of the reception powers of the incoming waves arriving at the two antenna elements when one of the two antenna elements is located at the first position.</p> |
