发明名称 |
System and method for simultaneous transmission of signals in multiple beams without feeder cable coherency |
摘要 |
A telecommunications system and method is disclosed for allowing a base station to simultaneously transmit signals in several beams of a multi-beam antenna configuration. Antenna pattern control is maintained by employing orthogonal polarization orientation for every other beam. For example, the two orthogonal polarization directions can be approximately linear polarization slanted ±45°. To be able to transmit simultaneously in an arbitrary combination of more than one beam, the BS antenna array includes a separate feeder cable for each combination of beams corresponding to a particular polarization, from one feeder per beam to one feeder with all beams of that polarization.
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申请公布号 |
US6577879(B1) |
申请公布日期 |
2003.06.10 |
申请号 |
US20000599974 |
申请日期 |
2000.06.21 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
HAGERMAN BO;JOHANNISSON BJOERN;OESTMAN THOMAS |
分类号 |
H01Q3/26;H01Q21/24;H01Q25/00;H04B7/10;H04W84/04;H04W88/08;(IPC1-7):H04B1/38 |
主分类号 |
H01Q3/26 |
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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