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    • 3. 发明授权
    • Dual-band antenna using high/low efficiency feed horn for optimal radiation patterns
    • 双频天线使用高/低效率馈电喇叭,以获得最佳辐射图
    • US08514140B1
    • 2013-08-20
    • US12713145
    • 2010-02-25
    • Sudhakar K. RaoChih-Chien HsuGerard J. Matyas
    • Sudhakar K. RaoChih-Chien HsuGerard J. Matyas
    • H01Q13/00
    • H01Q19/19H01Q5/55H01Q13/025H01Q19/132
    • A dual-band antenna system configured to transmit and/or receive microwave beams over two or more frequency bands with substantially similar beam widths and substantially similar sidelobe levels is disclosed. The antenna system includes at least one reflector and at least one feed horn, the horn configured to provide a first efficiency over a first frequency band and lower efficiencies over one or more second frequency bands. The horn includes a substantially conical wall having an internal surface with a variable slope. The internal surface includes one or more slope discontinuities, wherein the slope discontinuities are configured to generate primarily TE1,m modes within the first frequency band and within the second frequency bands and generate TM1,n modes substantially only within the second frequency bands.
    • 公开了一种双频带天线系统,其被配置为在两个或更多个频带上发射和/或接收具有基本相似的波束宽度和基本相似的旁瓣电平的微波波束。 天线系统包括至少一个反射器和至少一个馈电喇叭,喇叭被配置成在第一频带上提供第一效率,并且在一个或多个第二频带上提供较低的效率。 喇叭包括具有可变斜率的内表面的基本上圆锥形的壁。 内表面包括一个或多个斜率不连续性,其中斜率不连续性被配置为在第一频带内和第二频带内主要产生TE1,m模,并且基本上仅在第二频带内产生TM1,n模。