发明授权
US07999757B2 Multi-band ceiling antenna 有权
多频天线天线

  • 专利标题: Multi-band ceiling antenna
  • 专利标题(中): 多频天线天线
  • 申请号: US12187009
    申请日: 2008-08-06
  • 公开(公告)号: US07999757B2
    公开(公告)日: 2011-08-16
  • 发明人: Xin Du
  • 申请人: Xin Du
  • 申请人地址: US IL Bloomingdale
  • 专利权人: PCTEL, Inc.
  • 当前专利权人: PCTEL, Inc.
  • 当前专利权人地址: US IL Bloomingdale
  • 代理机构: Husch Blackwell LLP
  • 主分类号: H01Q21/00
  • IPC分类号: H01Q21/00 H01Q13/00
Multi-band ceiling antenna
摘要:
A multi-band antenna is provided that operates in at least two non-harmonically related frequency bands. The antenna includes a low frequency antenna for a relatively low frequency band of the at least two non-harmonically related frequency bands extending on a proximal end from a ground plane along a predominant axis and electrically isolated from the ground plane and a cone-shaped relatively high frequency antenna for a relatively high frequency band of the at least two non-harmonically related frequency bands disposed on and electrically connected to the proximal end of the low frequency antenna with an apex of the high frequency antenna disposed adjacent the ground plane coincident with the proximal end of the low frequency antenna and a base extending away from the ground plane coaxial with the predominant axis. The multi-band antenna further includes a first tubular sleeve extending from the ground plane coaxial with the predominant axis, said tubular sleeve electrically isolated from the ground plane, the low frequency antenna and high frequency antenna and a second tubular sleeve lying coaxial with the predominant axis extending from a marginal edge of the base of the high frequency antenna away from the ground plane, said second tubular sleeve electrically isolated from the high frequency antenna and low frequency antenna.
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