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 differen ce 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 1.2 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.
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申请公布号 |
CA2358125(A1) |
申请公布日期 |
2002.04.02 |
申请号 |
CA20012358125 |
申请日期 |
2001.10.01 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
YAMAGUCHI, RYO;NOJIMA, TOSHIO;TERADA, NORIYOSHI |
分类号 |
H01Q1/24;H01Q3/24;H01Q3/26;(IPC1-7):H04Q7/30;H04Q7/36 |
主分类号 |
H01Q1/24 |
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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