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公开(公告)号:US20150015451A1
公开(公告)日:2015-01-15
申请号:US14357447
申请日:2013-04-11
IPC分类号: H01Q1/48
摘要: An antenna system for a global navigation satellite system reference base station is disclosed.The antenna system includes an antenna positioned above a high capacitive impedance surface (HCIS) ground plane.Over a specific range of the lateral dimension of the HCIS ground plane and the height of the antenna above the HCIS ground plane, a high level of multipath suppression and high sensitivity for low-elevated satellites can be simultaneously maintained.The HCIS ground plane can be fabricated as a flat conducting plate with an array of conducting elements such as pins, pins with expanded tips, or mushroom structures. Alternatively, the HCIS can be fabricated as a flat conducting plate with a concentric series of choke rings.The antenna system can provide a positioning accuracy of +/−1 mm, an order of magnitude improvement over previous designs.
摘要翻译: 公开了一种用于全球导航卫星系统参考基站的天线系统。 天线系统包括位于高容性阻抗表面(HCIS)接地平面上方的天线。 在HCIS接地面的横向尺寸的特定范围和天线高度在HCIS接地面之上的特定范围内,可以同时保持高水平的多径抑制和对低架卫星的高灵敏度。 可以将HCIS接地平面制造成具有导电元件阵列的平面导电板,例如引脚,具有扩展尖端的销或蘑菇结构。 或者,HCIS可以制造成具有同心的一系列扼流圈的平面导电板。 天线系统可以提供+/- 1 mm的定位精度,与以前的设计相比有一个数量级的改进。