发明名称 |
Mobile communication base station equipment |
摘要 |
A mobile communication base station determines the oncoming direction of a radio wave with a simple arrangement and transmits a narrow angle beam in this direction. Received signals from a pair of wide angle beam antennae 21-1 and 21-2 having an equal configuration and a common orientation and which are located close to each other are fed to a direction finder receiver 22 and a communication receiver 15. By utilizing the fact that the both received signals have a coincident amplitude, a phase difference between the received signals is detected. The oncoming direction of the received radio wave (or the direction of a mobile station) is determined on the basis of the phase difference. A beam switcher 12 is controlled so as to connect a transmitter 13 to a narrow angle beam antenna (one of 11-1 to 11-4) which is directed in the oncoming direction thus determined. <IMAGE> |
申请公布号 |
AU7731901(A) |
申请公布日期 |
2002.04.11 |
申请号 |
AU20010077319 |
申请日期 |
2001.10.01 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
RYO YAMAGUCHI;NORIYOSHI TERADA;TOSHIO NOJIMA |
分类号 |
H04B7/155;H01Q1/24;H01Q3/24;H01Q3/26 |
主分类号 |
H04B7/155 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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