发明名称 |
BASE STATION ANTENNA DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To provide a base station antenna device of a small size, a light weight and a low cost, where radio wave radiation is minimized except for a service area. SOLUTION: A single unipole antenna installed vertically to a ground surface and an antenna device having a reflector in the shape of an umbrella at its upper part are provided for the base station antenna device.
|
申请公布号 |
JP2001257523(A) |
申请公布日期 |
2001.09.21 |
申请号 |
JP20000067906 |
申请日期 |
2000.03.13 |
申请人 |
NTT DOCOMO INC |
发明人 |
SUGIMOTO YUKI;EBINE YOSHIO |
分类号 |
H01Q19/12;H01Q1/12;H01Q1/42;H01Q9/32;H01Q15/14;H01Q21/08;H04B7/155;(IPC1-7):H01Q19/12 |
主分类号 |
H01Q19/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|