| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna with which the shape of upper surface is made thin and horizontal plane gain characteristics are uniform. SOLUTION: The vertical beam width of beams 12-1, 12-3, 12-4 and 12-6 positioned in the azimuth of mirror symmetricity to the plane direction of antenna 1, among four beams from 12-1 to 12-6 at least generated from antenna 11, is made n-fold as wide as the vertical beam width of beams 12-2 and 12-5. Besides, the horizontal plane beam width of beams 12-2 and 12-5 is made n-fold as wide as the horizontal beam width of beams 12-1, 12-3, 12-4 and 12-6 so that the radiation gain in all the horizontal plane azimuths of antenna 1 can be uniformly covered.</p> |
