| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna device having a downsized configuration capable of maintaining a tilt angle of a front lobe in a desired direction at a predetermined angle in a directivity pattern while facilitating installation work and deepening the tilt angle of a back lobe on the side opposite to the desired direction.SOLUTION: An antenna device includes an antenna distribution phase shifter 500 which adjusts phases among a plurality of antenna elements 210 so that the direction of a front lobe is inclined downward from a virtual horizontal surface only by a predetermined angle. A reflection member 300 has a main reflection plate 310 and sub reflection plates 320, 330. At least a part of the end edge on the front lobe side in the sub reflection plates 320, 330 is inclined to the side opposite to the front lobe side with the lower end side in the longitudinal direction of an array antenna 200 as a reference.</p> |
