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    • 2. 发明授权
    • Broadband satellite with dual frequency conversion and bandwidth aggregation
    • 宽带卫星具有双频转换和带宽聚合
    • US08660482B2
    • 2014-02-25
    • US13093669
    • 2011-04-25
    • Douglas G. Burr
    • Douglas G. Burr
    • H04B7/185
    • H04B7/18515H04B7/2041
    • A broadband satellite having a payload subsystem configured to provide dual frequency conversion and bandwidth aggregation is communicatively coupled (i) to at least one gateway by a feeder link operating at a first frequency band; and (ii) to a plurality of user terminals by user links operating at a second frequency band. The payload subsystem has a first and a second frequency converter a satellite feeder link antenna feed, and a satellite user link antenna feed. The first frequency converter down converts, to a third frequency band, as an aggregated block, signals received at the satellite feeder link antenna feed from the gateway via the feeder link. The third frequency band is substantially lower than both the first and second frequency band. The down converted signals are routed to the second frequency converter for up converting to the second frequency band for transmission over the user link to the user terminals.
    • 具有被配置为提供双频率转换和带宽聚合的有效载荷子系统的宽带卫星通过在第一频带上操作的馈线链路与至少一个网关通信耦合(i) 以及(ii)通过在第二频带操作的用户链接到多个用户终端。 有效载荷子系统具有第一和第二频率转换器,卫星馈线链路天线馈送和卫星用户链路天线馈送。 第一个频率转换器向第三个频带转换为一个聚合块,在卫星馈线链路天线接收的信号通过馈线链路从网关馈送。 第三频带基本上低于第一和第二频带。 下变频信号被路由到第二频率转换器,用于上变频到第二频带,以便通过用户链路传送到用户终端。
    • 4. 发明申请
    • Broadband Satellite with Dual Frequency Conversion and Bandwidth Aggregation
    • 具有双频转换和带宽聚合的宽带卫星
    • US20120094593A1
    • 2012-04-19
    • US13093669
    • 2011-04-25
    • Douglas G. Burr
    • Douglas G. Burr
    • H04B7/185
    • H04B7/18515H04B7/2041
    • A broadband satellite having a payload subsystem configured to provide dual frequency conversion and bandwidth aggregation is communicatively coupled (i) to at least one gateway by a feeder link operating at a first frequency band; and (ii) to a plurality of user terminals by user links operating at a second frequency band. The payload subsystem has a first and a second frequency converter a satellite feeder link antenna feed, and a satellite user link antenna feed. The first frequency converter down converts, to a third frequency band, as an aggregated block, signals received at the satellite feeder link antenna feed from the gateway via the feeder link. The third frequency band is substantially lower than both the first and second frequency band. The down converted signals are routed to the second frequency converter for up converting to the second frequency band for transmission over the user link to the user terminals.
    • 具有被配置为提供双频率转换和带宽聚合的有效载荷子系统的宽带卫星通过在第一频带上工作的馈线链路与至少一个网关通信耦合(i) 以及(ii)通过在第二频带操作的用户链接到多个用户终端。 有效载荷子系统具有第一和第二频率转换器,卫星馈线链路天线馈送和卫星用户链路天线馈送。 第一个频率转换器向第三个频带转换为一个聚合块,在卫星馈线链路天线接收的信号通过馈线链路从网关馈送。 第三频带基本上低于第一和第二频带。 下变频信号被路由到第二频率转换器,用于上变频到第二频带,以便通过用户链路传送到用户终端。
    • 6. 发明授权
    • Array fed multiple beam array reflector antenna systems and method
    • 阵列馈入多束阵反射天线系统及方法
    • US06392611B1
    • 2002-05-21
    • US09640936
    • 2000-08-17
    • Terry M. SmithGeorge HardieDouglas G. Burr
    • Terry M. SmithGeorge HardieDouglas G. Burr
    • H01Q1514
    • H01Q25/007H01Q1/288H01Q3/26H01Q19/195
    • Array fed multiple beam antenna systems and methods for use on an orbiting spacecraft carrying a communication system. The antenna systems include a reflector and a relatively small array feed compared to the reflector. The array feed has feeds (radiators) that illuminate the reflector and that are disposed in a focal plane of the reflector. A power division network excites the radiators of the feeds. The antenna system is capable of very wide scan angle operation and may be used to provide multiple spot beam coverage over the surface of the Earth viewed from a synchronous orbit spacecraft. Phase aberration normally associated with scanning is corrected by adjusting excitation coefficients of each array feed. The spot beams are scanned across a field of regard by controlling the position of each feed in the focal plane and using the appropriate amplitude and phase distribution associated with a particular spot beam (array feed). The amplitude and phase distributions may be fixed or varied during operation. A dual band system includes a second array feed and a frequency selective surface disposed between the array feeds that optimizes the respective array feeds. Use of the frequency selective surface in dual band implementations produces a very efficient communication system.
    • 阵列馈送多波束天线系统和方法,用于携带通信系统的轨道航天器。 与反射器相比,天线系统包括反射器和相对较小的阵列馈电。 阵列馈送具有照射反射器并且被布置在反射器的焦平面中的馈送(辐射器)。 功率分配网络激发馈线的散热器。 天线系统能够具有非常宽的扫描角度操作,并且可以用于在从同步轨道航天器观察到的地球表面上提供多个点波束覆盖。 通常通过调整每个阵列馈送的激励系数来校正通常与扫描相关的相位差。 通过控制焦平面中每个进给器的位置并使用与特定点波束(阵列进给)相关联的适当的幅度和相位分布来扫描横梁的横跨扫描场。 幅度和相位分布可以在操作期间固定或变化。 双频带系统包括第二阵列馈送和布置在阵列馈送之间的频率选择表面,其优化相应的阵列馈送。 在双频带实现中使用频率选择表面产生非常有效的通信系统。