| 摘要 |
PROBLEM TO BE SOLVED: To prevent an antenna from decreasing in gain owing to the snow accretion of the radiation surface side of the antenna and a snow accretion droop toward the radiation surface side of the antenna when the elevation angle of the antenna is large at the time of antenna installation. SOLUTION: Disclosed is an antenna snow accretion preventive structure for the antenna used for radio communication, and an antenna is fixed to an antenna fitting pole with antenna metal fittings and a snow roof is fixed to a fitting pole at the upper portion of the antenna with snow roof metal fittings so as to entirely cover the antenna when viewed from above. Furthermore, the elevation angle of the antenna can be varied by the antenna metal fittings. COPYRIGHT: (C)2006,JPO&NCIPI
|
