| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a variable directivity antenna which can adjust directivity easily in a site. Ž<P>SOLUTION: In the variable directional antenna, a radiating element is accommodated in a cylindrical radome 1, a main reflector element 2 is fixed to the radome 1 by support members 5 and 8, a subreflector element 3 is supported rotatably to a circumferential direction of the radome 1 by support members 11 and 17, and a subreflector element 4 is supported rotatable to a circumferential direction of the radome 1 by support portion members 18 and 19. Therefore, the directivity of an antenna can be easily adjusted by rotating the subreflector elements 3 and 4 in a site. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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