| 摘要 |
<p>PURPOSE:To increase the angle of directivity, by covering a part of the opening part of a horn antenna with an electric wave adsorber. CONSTITUTION:A part of the opening part 1a of the horn antenna 1 is masked partially by the electric wave absorber 2. When the opening space (d) is reduced by sliding the absorber 2, the angle of directivity increases in the direction of face H. But no change is given to the angle of directivity in the direction of face E. In such way, the angle of directivity can be changed freely by adding a simple attachment.</p> |
