| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device having high communication efficiency. SOLUTION: The antenna includes a fitted member 15, a converging member 11 for converging or deflecting radio waves, and a receiver for receiving the radio waves which pass through the fitted member 15 and the converging member 11, in this order. The antenna has two functions of changing the attitude of the converging member 11 to change the direction of an optical axis of the converging member 11 so that sensitivity is increased, when the incoming direction of radio waves is different from the normal of the fitted member 15, and changing the posture of the receiver to change the pointing direction of the receiver. COPYRIGHT: (C)2004,JPO
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