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公开(公告)号：US6094175A
公开(公告)日：2000-07-25
申请号：US193237
申请日：1998-11-17
CPC分类号： H01Q19/10 , H01Q1/405 , H01Q1/42 , H01Q13/0208 , H01Q19/102 , H01Q19/104
摘要： A dual band omni directional antenna is disclosed. A dielectric cylinder supports a cone shaped reflector over a corrugated radio frequency horn. Orthogonal mode transducers produce and conduct circularly polarized radio frequency waves within the horn. The reflector, the horn, and the transducers are all coaxially disposed. The antenna produces a torodial radiation pattern in a plane that is substantially orthogonal to the axis of the antenna. Transmit and receive functions may be performed simultaneously using a single reflector and two orthogonal mode transducers.
摘要翻译： 公开了一种双频带全向天线。 介质圆筒支撑在波形射频喇叭上的锥形反射器。 正交模式换能器在喇叭内产生并传导圆偏振射频。 反射器，喇叭和换能器都同轴设置。 天线在与天线的轴线基本正交的平面中产生一个横波辐射图。 可以使用单个反射器和两个正交模式换能器同时执行发射和接收功能。
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2.发明授权On-orbit reconfigurability of a shaped reflector with feed/reflector defocusing and reflector gimballing 失效具有进料/反射器散焦和反射器球形的成形反射器的在轨可重构性
公开(公告)号：US6031502A
公开(公告)日：2000-02-29
申请号：US753660
申请日：1996-11-27
IPC分类号： H01Q19/18 , H01Q1/18 , H01Q1/28 , H01Q3/16 , H01Q3/18 , H01Q3/20 , H01Q15/14 , H01Q3/12 , H01Q19/10
摘要： A system and method for changing the radiation pattern of an antenna assembly of a satellite in orbit is provided. The antenna assembly includes a reflector antenna fed by a feed assembly. The reflector antenna transmits and receives signals within a radiation pattern. The reflector antenna and the feed assembly are movably mounted to a sliding mechanism so that they can be displaced with respect to one another. The displacement causes defocusing as the reflector antenna is displaced from the focus point. The defocusing causes the radiation pattern to become more compact or broadened. Thus, the radiation pattern of the satellite provided with a single reflector antenna and a single feed element may be changed while the satellite is in orbit. The system and method include gimballing the reflector antenna to steer the radiation pattern.
摘要翻译： 提供了一种用于改变卫星在轨道中的天线组件的辐射模式的系统和方法。 天线组件包括由馈送组件馈送的反射器天线。 反射器天线在辐射图中发射和接收信号。 反射器天线和馈送组件可移动地安装到滑动机构，使得它们可以相对于彼此移位。 当反射器天线从聚焦点移位时，位移引起散焦。 散焦导致辐射图变得更加紧凑或变宽。 因此，当卫星进入轨道时，可以改变设置有单个反射器天线和单个馈送元件的卫星的辐射图。 该系统和方法包括将反射器天线槌球以控制辐射图。
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3.发明授权Reconfigurable satellite and antenna coverage communications backup capabilities 有权可重构卫星和天线覆盖通信备份功能公开(公告)号：US06438354B2
公开(公告)日：2002-08-20
申请号：US09222419
申请日：1998-12-23
申请人： James D. Thompson , Parthasarathy Ramanujam , Cynthia A. Dixon , Debbie H. Feuerborn , David R. Goldberg , Stephen F. Sichi , Lomash J. Shah , John R. Dunwoody
发明人： James D. Thompson , Parthasarathy Ramanujam , Cynthia A. Dixon , Debbie H. Feuerborn , David R. Goldberg , Stephen F. Sichi , Lomash J. Shah , John R. Dunwoody
IPC分类号： H04B7185
CPC分类号： H04B7/2041 , H04B7/18519
摘要： A reconfigurable payload for a satellite having a flexible antenna system, a variable downconverter technology and a filter technology that all work in combination to allow the payload of a satellite to be reconfigured in orbit.
摘要翻译： 具有柔性天线系统的卫星的可重新配置的有效载荷，可变下变频器技术和滤波器技术，它们都组合起来以使卫星的有效载荷在轨道上重新配置。
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公开(公告)号：US08552917B2
公开(公告)日：2013-10-08
申请号：US12769418
申请日：2010-04-28
申请人： Daniel F. Mathews , Parthasarathy Ramanujam , Robert B. Mathews , Thomas M. Hikido , Louis R. Fermelia , Gary J. Gawlas
发明人： Daniel F. Mathews , Parthasarathy Ramanujam , Robert B. Mathews , Thomas M. Hikido , Louis R. Fermelia , Gary J. Gawlas
IPC分类号： H01Q13/00
CPC分类号： H01Q1/288 , H01Q19/17 , H01Q25/007 , H04B7/18515
摘要： A method and system are disclosed for wide angle multibeam antennas. The method and system involve a multibeam antenna system for generating high performance multiple spot beams. In one or more embodiments, the multibeam antenna system includes an oversized antenna reflector and a plurality of antenna feeds. The oversized antenna reflector has its surface shape optimized from a normal parabolic shape in order to broaden and shape the reflected spot beams to improve antenna performance. In addition, the diameter of the oversized antenna reflector is greater than ((100*λ)/δ), where λ is the wavelength in inches and δ is the beam to beam spacing in degrees. In some embodiments, the ratio of the focal length of the oversized antenna reflector to the diameter of the oversized antenna reflector (F/D) is greater than 0.7. In at least one embodiment, the system further includes an antenna sub-reflector.
摘要翻译： 公开了广角多波束天线的方法和系统。 该方法和系统涉及用于产生高性能多点波束的多波束天线系统。 在一个或多个实施例中，多波束天线系统包括过大的天线反射器和多个天线馈电。 超大型天线反射器具有从正常抛物线形状优化的表面形状，以便扩大和形成反射的光束以改善天线性能。 此外，尺寸过大的天线反射器的直径大于（（100 *λ）/ delta），其中λ是以英寸为单位的波长，delta是以束为单位的波束间距。 在一些实施例中，尺寸过大的天线反射器的焦距与超尺寸天线反射器的直径（F / D）的比率大于0.7。 在至少一个实施例中，系统还包括天线子反射器。
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公开(公告)号：US06628238B2
公开(公告)日：2003-09-30
申请号：US09992259
申请日：2001-11-19
IPC分类号： H01Q1919
CPC分类号： H01Q1/288 , H01Q15/16 , H01Q19/192
摘要： An antenna includes a feed generating a communication signal. A sub-reflector is positioned to reflect the communication's signal to form a sub-reflective signal. A main reflector is positioned to reflect the sub-reflective signal. The sub-reflector has an elliptical rim.
摘要翻译： 天线包括产生通信信号的馈电。 子反射器被定位成反射通信的信号以形成子反射信号。 主反射器被定位成反射副反射信号。 子反射器具有椭圆形边缘。
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6.发明授权公开(公告)号：US06366256B1
公开(公告)日：2002-04-02
申请号：US09665720
申请日：2000-09-20
IPC分类号： H01Q1914
CPC分类号： H01Q3/2658 , H01Q1/288 , H01Q19/192 , H01Q25/007 , H04B7/18515
摘要： An antenna system and method for generating a desired contiguous spot beam pattern, and a signal is disclosed. The contiguous spot beam generating antenna system comprises a reflector system configured in a side-fed Cassegrain (SFOC) configuration, an array of feed horns comprising at least a subset of feed horns for illuminating the reflector system, and a beamforming network, communicatively coupled to the array of feed horns, for controlling an excitation of the subset of the feed horns in the array of feed horns. The method comprises illuminating a side fed offset Cassegrain reflector system with an RF signal emanating from an array of feed horns, and controlling an excitation of the subset of the feed horns. The present invention provides a beamformer network that can produce uniform performance over wide scan angles, is easier to integrate and test, that can change the beam pattern on orbit, and that provides a more complete utilization of space assets without dramatically increasing the cost of manufacturing and operating a satellite. The use of a SFOC configuration or other wide scanning antenna permits the use of a simple beamforming network while maintaining excellent beam beam scanning characteristics.
摘要翻译： 公开了一种用于产生期望的连续点波束图案的天线系统和方法，以及信号。 连续点波束产生天线系统包括以侧馈卡塞格林（SFOC）配置配置的反射器系统，包括用于照射反射器系统的馈电喇叭的至少一个子集的馈电喇叭阵列，以及波束形成网络，通信地耦合到 用于控制馈电喇叭阵列中馈电喇叭子集的激励的馈源喇叭阵列。 该方法包括用从馈源喇叭阵列发出的RF信号照亮侧馈偏移卡塞格林反射器系统，以及控制馈电喇叭子集的激发。 本发明提供了一种波束形成器网络，其可以在宽扫描角度上产生均匀的性能，更容易集成和测试，这可以改变轨道上的波束图案，并且在不显着增加制造成本的情况下提供更完整的利用空间资产 并运行卫星。 使用SFOC配置或其他宽扫描天线允许使用简单的波束成形网络，同时保持优异的波束扫描特性。
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公开(公告)号：US6052095A
公开(公告)日：2000-04-18
申请号：US267097
申请日：1999-03-10
CPC分类号： H01Q21/28 , H01Q1/288 , H01Q15/147 , H01Q15/22 , H01Q19/132 , H01Q25/001 , Y10S343/02
摘要： An improved dual gridded reflector antenna configuration which allows cross-polarization radiation to be scanned in any given direction. The dual-gridded reflector assembly includes a front parabolic reflector illuminated by a first source, and a second parabolic reflector illuminated by a second source. The second reflector is positioned adjacent to and behind the front reflector such that the center points of the reflectors align to define a center axis. Additionally, the first and second sources are positioned at different offsets with respect to the reflectors and have a respective rotated offset angle with respect to the center axis such that the sources define an antenna feed separation. By modifying the offsets and the rotated offset angles, the feed separation can be designed to have an inclination with respect to the north-south or east-west feed separation direction.
摘要翻译： 改进的双网格反射器天线配置，允许在任何给定方向上扫描交叉极化辐射。 双网格反射器组件包括由第一源照射的前抛物面反射器和由第二源照射的第二抛物面反射器。 第二反射器定位成与前反射器相邻并在其后面，使得反射器的中心点对准以限定中心轴线。 此外，第一和第二源相对于反射器定位在不同的偏移处，并且相对于中心轴线具有相应的旋转偏移角，使得源限定天线馈送间隔。 通过改变偏移量和旋转的偏移角度，进给分离可以被设计成相对于南北或东西方的进给分离方向具有倾斜度。
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公开(公告)号：US20080153481A1
公开(公告)日：2008-06-26
申请号：US12046271
申请日：2008-03-11
IPC分类号： H04Q7/20
CPC分类号： H04B7/2041 , H04B7/18528
摘要： A communication system has a high altitude communication device that has an antenna for directing beams to a fixed cell pattern with a polarity of cells. A specific pattern of cells having the same communication resource is provided. Cells having the same resource may be separated. The antenna is shaped to suppress interference with locations having the same resource. The areas not having the same resource are not suppressed to allow the system to have maximum capacity and allow a smaller antenna aperture.
摘要翻译： 通信系统具有高空通信装置，其具有用于将波束引导到具有小区极性的固定小区模式的天线。 提供具有相同通信资源的小区的特定模式。 可以分离具有相同资源的单元。 天线成形为抑制对具有相同资源的位置的干扰。 不具有相同资源的区域不被抑制以允许系统具有最大容量并允许较小的天线孔径。
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公开(公告)号：US06366257B1
公开(公告)日：2002-04-02
申请号：US09713114
申请日：2000-11-15
申请人： Parthasarathy Ramanujam , Michael E. Pekar , David M. Kershner , Brian M. Park , Donald L. Davis
发明人： Parthasarathy Ramanujam , Michael E. Pekar , David M. Kershner , Brian M. Park , Donald L. Davis
IPC分类号： H01Q1300
CPC分类号： H01Q1/288 , H01Q25/007
摘要： The present invention discloses a method for generating multiple antenna beams and a system for generating multiple antenna beams. The system comprises a first reflector surface that has a primary and at least a first auxiliary surface, and a second reflector surface, and also comprises first, second, and third feed horns. The first feed horn illuminates the primary surface with radio frequency (RF) energy, the second feed horn illuminates the auxiliary surface with RF energy, and the third feed horn illuminates the second reflector surface with RF energy. The first feed horn and third feed horn are removed from an axis of symmetry of the first auxiliary surface. The method comprises illuminating a primary portion of a first reflector surface with radio frequency (RF) energy from a first feed horn, illuminating an auxiliary portion of the first reflector surface with RF energy from a second feed horn, illuminating a second reflector surface with RF energy from a third feed horn, wherein the first feed horn and third feed horn are removed from an axis of symmetry of the auxiliary portion of the first reflector surface.
摘要翻译： 本发明公开了一种用于产生多个天线波束的方法和一种用于产生多个天线波束的系统。 该系统包括具有初级和至少第一辅助表面的第一反射器表面和第二反射器表面，并且还包括第一，第二和第三馈电喇叭。 第一馈电喇叭用射频（RF）能量照射主表面，第二馈电喇叭用RF能量照射辅助表面，第三馈电喇叭用RF能量照射第二反射器表面。 从第一辅助表面的对称轴去除第一馈电喇叭和第三馈电喇叭。 该方法包括用来自第一馈电喇叭的射频（RF）能量照射第一反射器表面的主要部分，用来自第二馈电喇叭的RF能量照射第一反射器表面的辅助部分，用RF照射第二反射器表面 来自第三馈电喇叭的能量，其中第一馈电喇叭和第三馈电喇叭从第一反射器表面的辅助部分的对称轴线移除。
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公开(公告)号：US08103270B2
公开(公告)日：2012-01-24
申请号：US12046271
申请日：2008-03-11
IPC分类号： H04W4/00
CPC分类号： H04B7/2041 , H04B7/18528
摘要： A communication system has a high altitude communication device that has an antenna for directing beams to a fixed cell pattern with a polarity of cells. A specific pattern of cells having the same communication resource is provided. Cells having the same resource may be separated. The antenna is shaped to suppress interference with locations having the same resource. The areas not having the same resource are not suppressed to allow the system to have maximum capacity and allow a smaller antenna aperture.
摘要翻译： 通信系统具有高空通信装置，其具有用于将波束引导到具有小区极性的固定小区模式的天线。 提供具有相同通信资源的小区的特定模式。 可以分离具有相同资源的单元。 天线成形为抑制对具有相同资源的位置的干扰。 不具有相同资源的区域不被抑制以允许系统具有最大容量并允许较小的天线孔径。
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