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    • 1. 发明授权
    • Adjustable spiral antenna for portable use
    • 可调螺旋天线便携式使用
    • US08780009B2
    • 2014-07-15
    • US13066365
    • 2011-04-13
    • Robert J. CrowleyDesiree L. Fyler
    • Robert J. CrowleyDesiree L. Fyler
    • H01Q1/36
    • H01Q1/362H01Q1/08H01Q1/427H01Q1/428H01Q1/50H01Q11/086
    • A spiral, helical antenna is configured to produce a generally circular polarized radiation pattern covering a range of frequencies, over a ground plane. The antenna is comprised of a spring-like spiral conductor that may be held in compression by a size and shape regulating outer nonconductive membrane. The assembly may be compressed and or extended to adjust the antenna for best performance in a particular situation. The assembly may be compressed into a generally flattened state for storage and or transportation, and extended at a later time for use. Accurate antenna dimensions and good performance are afforded by the use of high quality spring materials in conjunction with precise membrane dimensions.
    • 螺旋形螺旋天线被配置为在接地平面上产生覆盖一定频率范围的大致圆形的偏振辐射图。 该天线包括弹簧状螺旋导体,其可以通过限制外部非导电膜的尺寸和形状保持压缩。 组件可以被压缩和/或扩展以调整天线以在特定情况下获得最佳性能。 组件可以被压缩成大体平坦化的状态用于存储和/或运输,并且在稍后的时间内被使用。 通过使用高质量的弹簧材料以及精确的膜尺寸来提供精确的天线尺寸和良好的性能。