| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna support base using a small space for antenna installation, wherein an antenna tip displacement is little even if a large antenna compliant with a low frequency and a wide band is installed, and no offset occurs at polarization switching. SOLUTION: An antenna holder 21 is provided which grips a boom 12 between a plurality of elements 11 and performs vertical/horizontal polarization switching of an antenna 1 by rotation. Here, the center of the antenna 1 is coaxial with the center of rotation for polarization switching. COPYRIGHT: (C)2010,JPO&INPIT
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