发明名称 |
Antenna system electromagnetic lens arrangement |
摘要 |
An antenna system comprises: a cylindrical electromagnetic lens 1 with at least one variation in dielectric permittivity and a dielectric member 2 receiving an output beam 11 from the cylindrical lens 1 and focusing the beam in an elevation plane perpendicular to the planar face of the cylindrical lens 1. The dielectric member 2 may be ring shaped and at least partially surrounds the cylindrical lens 1 which has first and second cylindrical surfaces of respective diameters. The second surface of the dielectric member may face a lateral face of the cylindrical lens 1. The dielectric member 2 may be detachably mounted in the antenna system and have a height which is larger than the axial thickness of the cylindrical lens 1. The dielectric member 2 may be made of PTFE with a relative permeability of between 1.5 and 2.5. At least one waveguide signal feed may be located at the circumference 5 of the cylindrical lens 1. A conductive mounting may be integrated with the lens and the feed circuit. A shielding enclosure may be made of a metallic material or of a moulded plastic material or a ceramic material which has been metallised. The antenna system may provide beamsteering with azimuth and elevation control. |
申请公布号 |
GB2509112(A) |
申请公布日期 |
2014.06.25 |
申请号 |
GB20120023096 |
申请日期 |
2012.12.20 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
HERVE MERLET;OLIVIER LAFOND;MOHAMMED HIMDI;JONATHAN BOR |
分类号 |
H01Q19/06;H01Q15/08 |
主分类号 |
H01Q19/06 |
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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