发明授权
- 专利标题: Method and apparatus for a multi-beam antenna system
- 专利标题(中): 多波束天线系统的方法和装置
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申请号: US10704158申请日: 2003-11-10
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公开(公告)号: US07664533B2公开(公告)日: 2010-02-16
- 发明人: Andrew Logothetis , David Astely
- 申请人: Andrew Logothetis , David Astely
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 代理机构: Nixon & Vanderhye P.C.
- 主分类号: H04M1/00
- IPC分类号: H04M1/00
摘要:
An antenna array in a radio node includes multiple antenna elements for transmitting a wider beam covering a majority of a sector cell that includes a common signal and a narrower beam covering only a part of the sector cell that includes a mobile user-specific signal. Transmitting circuitry is coupled to the antenna array, and processing circuitry is coupled to the transmitting circuitry. The processing circuitry ensures the user-specific signal and the common signal in a mixed beam embodiment are in-phase and time-aligned at the antenna array. In a steered beam embodiment, the processing circuitry ensures the user-specific signal and the common signal are time-aligned and have a controlled phase difference when received at mobile stations in the sector cell. In both embodiments, distortions in the common signal and the user-specific signal associated with their conversion from baseband frequency to radio frequency are also compensated. And in the steered beam embodiment, beam forming weights are used not only to radiate a narrower beam to the desired mobile user but also to direct a wider common signal beam to reach all mobile users in the cell.
公开/授权文献
- US20050101352A1 Method and apparatus for a multi-beam antenna system 公开/授权日:2005-05-12
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