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1. 发明授权

US06442148B1 Reconfigurable multibeam communications satellite having frequency channelization 有权
标题翻译：具有频率信道化的可重构多波束通信卫星
公开(公告)号：US06442148B1
公开(公告)日：2002-08-27
申请号：US09222200
申请日：1998-12-23
申请人： Gerald J. Adams , Paul D. Tarbuck , Robert E. Vaughan , Shih-Chang Wu , Thomas S. La France , Sudhakar K. Rao
发明人： Gerald J. Adams , Paul D. Tarbuck , Robert E. Vaughan , Shih-Chang Wu , Thomas S. La France , Sudhakar K. Rao
IPC分类号： H04B719
CPC分类号： H04B7/2041
摘要： A satellite subsystem for a satellite employs a reconfigurable communications payload and active array antennas. The subsystem includes an active receive array antenna having a reconfigurable beam forming network for forming input beam signals from input signals received by the receive antenna from sources. An input switch matrix power divides the input beam signals into sets of input beam signals. Each of the channel signals corresponds to a respective channel of the input beam signals. The subsystem further includes a channelizer having a plurality of channel processors each receiving at least one input beam signal from the input switch matrix. The channel processors filter the input beam signals into channel signals. Each of the channel signals corresponds to a respective channel of the input beam signals. The channel processors change the frequency of at least one channel signal to route the at least one channel signal to a different channel than the respective channel of the input beam signals. An output switch matrix combines the channel signals into output beam signals. Each of the channel signals corresponds to a respective channel of the output beam signals. An active transmit array antenna having a reconfigurable beam forming network forms output signals from the output beam signals for transmission by the transmit array antenna to destinations.
摘要翻译：用于卫星的卫星子系统采用可重新配置的通信有效载荷和有源阵列天线。子系统包括具有可重构波束形成网络的有源接收阵列天线，用于根据由接收天线从源接收的输入信号形成输入波束信号。输入开关矩阵功率将输入波束信号分为输入波束信号组。每个信道信号对应于输入波束信号的相应信道。子系统还包括具有多个信道处理器的信道化器，每个信道处理器从输入交换矩阵接收至少一个输入波束信号。信道处理器将输入波束信号滤波成信道信号。每个信道信号对应于输入波束信号的相应信道。信道处理器改变至少一个信道信号的频率以将至少一个信道信号路由到与输入波束信号的相应信道不同的信道。输出开关矩阵将通道信号组合成输出光束信号。每个通道信号对应于输出光束信号的相应通道。具有可重构波束形成网络的有源发射阵列天线从输出波束信号形成输出信号，以便由发射阵列天线发射到目的地。

2. 发明授权

US5936588A Reconfigurable multiple beam satellite phased array antenna 失效
标题翻译：可重构多波束卫星相控阵天线
公开(公告)号：US5936588A
公开(公告)日：1999-08-10
申请号：US092511
申请日：1998-06-05
申请人： Sudhakar K. Rao , Parthasarathy Ramanujam , Robert E. Vaughan , Philip H. Law
发明人： Sudhakar K. Rao , Parthasarathy Ramanujam , Robert E. Vaughan , Philip H. Law
IPC分类号： H01Q3/24 , H01Q21/06 , H01Q25/00 , H04B7/185 , H04B7/204
CPC分类号： H04B7/18519 , H01Q21/064 , H01Q25/008 , H01Q3/24 , H04B7/2041
摘要： A reconfigurable multiple beam phased array antenna has radiating elements arranged in a planar array and variable phase shifters. Each one of the phase shifters is connected to a respective one of the radiating elements. The array antenna further includes a beam forming network for forming spot and regional beam signals. The beam forming network forms a regional beam signal from a combination of spot beam signals. The beam forming network has two dimensional stacks of Rotman lenses provided with a first set of ports. Each one of the first set of ports is connected to a respective one of the radiating elements with. The Rotman lenses generate frequency invariant spot beam signals which are communicated between the radiating elements and the Rotman lenses via the first set of ports for transmission and reception of spot beams and regional beams by the radiating elements. The phase shifters are adjusted to steer the spot and regional beams to desired locations.
摘要翻译：可重构多光束相控阵天线具有布置在平面阵列中的辐射元件和可变移相器。每个移相器连接到相应的一个辐射元件。阵列天线还包括用于形成点和区域波束信号的波束形成网络。波束形成网络从点波束信号的组合形成区域波束信号。波束形成网络具有设置有第一组端口的Rotman透镜的二维叠层。第一组端口中的每一个都与相应的辐射元件连接。 Rotman透镜产生频率不变点波束信号，其通过第一组端口在辐射元件和Rotman透镜之间传递，用于通过辐射元件发射和接收点波束和区域波束。调整移相器以将斑点和区域光束转向所需位置。

3. 发明授权

US5936592A Reconfigurable multiple beam satellite reflector antenna with an array feed 失效
标题翻译：可重构多波束卫星反射天线与阵列馈电
公开(公告)号：US5936592A
公开(公告)日：1999-08-10
申请号：US92510
申请日：1998-06-05
申请人： Parthasarathy Ramanujam , Sudhakar K. Rao , Robert E. Vaughan , James C. McCleary
发明人： Parthasarathy Ramanujam , Sudhakar K. Rao , Robert E. Vaughan , James C. McCleary
IPC分类号： H01Q3/26 , H01Q25/00 , H01Q21/00
CPC分类号： H01Q25/007 , H01Q3/2605
摘要： A reconfigurable multiple beam array antenna for transmitting beams includes a reflector and radiating elements for feeding beam signals to the reflector. The array antenna includes a reconfigurable beam forming network having a plurality of dividers, a plurality of adjustable phase shifter and attenuator pairs, and a plurality of combiners to form beam signals from beam signals input to the beam forming network. A first hybrid matrix formed by an association of couplers is connected to the beam forming network for receiving the beam signals. Amplifiers receive and amplify the beam signals from the first hybrid matrix. A second hybrid matrix formed by an association of couplers is connected to the amplifiers for receiving the beam signals. The second hybrid matrix provides the amplified beam signals to the radiating elements for the reflector to transmit beams.
摘要翻译：用于发射光束的可重构多光束阵列天线包括用于将光束信号馈送到反射器的反射器和辐射元件。阵列天线包括具有多个分频器的可重构波束形成网络，多个可调移相器和衰减器对，以及多个组合器，以从输入到波束形成网络的波束信号形成波束信号。由耦合器的关联形成的第一混合矩阵连接到用于接收波束信号的波束形成网络。放大器接收和放大来自第一混合矩阵的波束信号。由耦合器的关联形成的第二混合矩阵连接到用于接收波束信号的放大器。第二混合矩阵将放大的波束信号提供给用于反射器的辐射元件以发射波束。

4. 发明授权

US07171158B2 Satellite communication system using linear cell tracking 有权
标题翻译：卫星通信系统采用线性单元跟踪
公开(公告)号：US07171158B2
公开(公告)日：2007-01-30
申请号：US10172260
申请日：2002-06-14
申请人： Harold A. Rosen , Steven O. Lane , Robert E. Vaughan
发明人： Harold A. Rosen , Steven O. Lane , Robert E. Vaughan
IPC分类号： H04B7/185
CPC分类号： H04B7/1851
摘要： An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.
摘要翻译：提供了一种改进的卫星通信设备和系统。卫星通信设备使用偏航或侧倾偏转导向线性化上行链路小区的角度轨迹; 上行链路天线中的一维线性“棘轮”，以沿着天线列维护上行链路小区的资源分配; 相位阵列下行链路天线，其可以在补偿偏航（或侧倾偏航）卫星转向的同时跟踪地球固定的下行链路小区; 以及在足迹中的下行链路小区之间的可变速率TDMA服务。因此，在卫星切换之间执行新的资源分配的系统开销最小化，从而减少资源管理并增加系统容量。提供了通过线性单元棘轮，上行链路峰值开关和数据驱动的可变TDMA下行链路相位阵列将上行链路和下行链路资源的灵活的带宽/容量分配给接地位置。

5. 发明授权

US06430393B1 Satellite communication system using linear cell tracking 有权
公开(公告)号：US06430393B1
公开(公告)日：2002-08-06
申请号：US09379173
申请日：1999-08-23
申请人： Harold A. Rosen , Steven O. Lane , Robert E. Vaughan
发明人： Harold A. Rosen , Steven O. Lane , Robert E. Vaughan
IPC分类号： H04B7185
CPC分类号： H04B7/1851
摘要： An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.

6. 发明授权

US06421528B1 Satellite transmission system with adaptive transmission loss compensation 有权
公开(公告)号：US06421528B1
公开(公告)日：2002-07-16
申请号：US09301967
申请日：1999-04-29
申请人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
发明人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
IPC分类号： H04J1302
CPC分类号： H04B7/18513 , H04B7/2041 , Y02D70/446
摘要： A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization. The present invention allows for the reduction of RF transmit power to achieve the same communications performance enabling either increases in satellite functionality and/or an increase in total capacity of the satellite communication system.

7. 发明授权

US06975600B1 Multimode transmission system using TDMA 失效
标题翻译：多模传输系统采用TDMA
公开(公告)号：US06975600B1
公开(公告)日：2005-12-13
申请号：US09664082
申请日：2000-09-18
申请人： Robert E. Vaughan , Harold Rosen
发明人： Robert E. Vaughan , Harold Rosen
IPC分类号： H04B7/212 , H04L12/50
CPC分类号： H04B7/212 , Y02D70/446
摘要： A multimode transmission system using TDMA provides a plurality of satellite services to a ground station terminal. These services include timing beacon synchronization, multi-cast/broadcast data service, calibration data, and point-to-point data service. The multimode transmission system uses a TDM switch to generate a TDMA signal having a plurality of TDMA transmission frames. Each TDMA transmission frame includes a plurality of downlink frame time slots. Each time slot may be of variable length and is dynamically allocated to an individual satellite service based upon demand. The TDMA signal is then broadcast using an advanced transmit antenna system, which requires beam-shaping and beam power control features, to enable TDMA switching between shaped beams and spot beam modes of the antenna. These antenna features allow for the dynamic partitioning of satellite system capacity between wide-area broadcasts and localized point-to-point service and efficient utilization of the satellite transmission power.
摘要翻译：使用TDMA的多模传输系统向地面站终端提供多个卫星业务。这些服务包括定时信标同步，多播/广播数据业务，校准数据和点对点数据业务。多模传输系统使用TDM开关来生成具有多个TDMA传输帧的TDMA信号。每个TDMA传输帧包括多个下行链路帧时隙。每个时隙可以是可变长度，并且基于需求被动态分配给单独的卫星服务。然后使用先进的发射天线系统广播TDMA信号，该系统需要波束整形和波束功率控制特征，以使得能够在成形波束和天线的点波束模式之间进行TDMA切换。这些天线特征允许在广域广播和局部点对点服务之间的卫星系统容量的动态划分和卫星传输功率的有效利用。

8. 发明授权

US06799014B2 Satellite transmission system with adaptive transmission loss compensation 有权
标题翻译：卫星传输系统具有自适应传输损耗补偿
公开(公告)号：US06799014B2
公开(公告)日：2004-09-28
申请号：US10068543
申请日：2002-02-06
申请人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
发明人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
IPC分类号： H04B7185
CPC分类号： H04B7/18513 , H04B7/2041 , Y02D70/446
摘要： A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization. The present invention allows for the reduction of RF transmit power to achieve the same communications performance enabling either increases in satellite functionality and/or an increase in total capacity of the satellite communication system.
摘要翻译：用于调整发送到卫星覆盖区域内的局部区域的信号的卫星通信信号发射功率的系统和方法利用局部区域内的天气条件（172）和/或实际路径损耗（174）的实时信息来调整卫星射束（188）的有效各向同性辐射功率（EIRP），以最小化传输所需的总射频（RF）功率。可以使用用于发射点波束和/或区域覆盖波束的各种天线类型来实现传输系统。代表性的天线实现包括具有低级波束成形网络和混合矩阵放大器系统的多波束天线，具有独立输入幅度控制的相控阵列和用于每个波束的波束导引，以及相控阵列，其馈送单个广播波束的共焦成像系统极化。本发明允许降低RF发射功率以实现相同的通信性能，从而能够增加卫星功能和/或增加卫星通信系统的总容量。

9. 发明授权

US06229482B1 Method and apparatus for interference mitigation for phased-array beam pointing 有权
标题翻译：用于相控阵光束指向的干扰减轻的方法和装置
公开(公告)号：US06229482B1
公开(公告)日：2001-05-08
申请号：US09550577
申请日：2000-04-17
申请人： Robert E. Vaughan
发明人： Robert E. Vaughan
IPC分类号： H04B7185
CPC分类号： H04B7/2041
摘要： A method and apparatus for determining interference from a beam generated by a satellite includes the steps of determining a desired beam having a desired center location, a desired shape, a beam angle, and a predetermined frequency bandwidth comprising a plurality of frequencies. An acceptable interference is determined according to an acceptable side lobe signal strength. A beam squint pattern is determined that corresponds to each of the frequency widths. A beam squint boundary has an area substantially enclosing the beam squint pattern. The beam squint pattern has a center and a radius. A distance between centers is determined based upon the radii of the adjacent beams.
摘要翻译：用于确定由卫星产生的波束的干扰的方法和装置包括以下步骤：确定具有期望中心位置，期望形状，波束角度和包括多个频率的预定频率带宽的期望波束。根据可接受的旁瓣信号强度确定可接受的干扰。确定对应于每个频率宽度的光束偏斜图案。光束斜度边界具有基本上包围光束斜率图案的区域。光束斜视图具有中心和半径。基于相邻波束的半径来确定中心之间的距离。

10. 发明授权

US6130643A Antenna nulling system for suppressing jammer signals 有权
标题翻译：用于抑制干扰信号的天线归零系统
公开(公告)号：US6130643A
公开(公告)日：2000-10-10
申请号：US291713
申请日：1999-04-14
申请人： John M. Trippett , Robert E. Vaughan
发明人： John M. Trippett , Robert E. Vaughan
IPC分类号： G01S7/36 , G01S3/16
CPC分类号： H04K3/228 , G01S7/36 , H04K2203/32
摘要： An antenna nulling system (28) for nulling a jamming signal having a multibeam antenna (48), a correlator (72), and antenna pattern calculator (94), a sequential updater (90) and a beamformer (70) is provided. The multibeam antenna (48) includes a plurality of antenna elements (50) and is operable to receive the plurality of signals. The correlator (72) is operable to receive at least one sample signal from one of the antenna elements (50) and a composite signal from the plurality of antenna elements (50). The correlator (72) determines a cross-correlation of the sample signal and the composite signal. The antenna pattern calculator (94) calculates a difference in pattern magnitude of an adapted antenna pattern and a quiescent antenna pattern of the multibeam antenna (48). The sequential updater (90) sequentially calculates a new weight for each of the antenna elements (50) based upon an existing weight of each antenna element (50), the cross-correlation and the difference in pattern magnitude. The beamformer (70) is in communication with the multibeam antenna (48) and the sequential updater (90) to combine a new weight for each of the antenna elements (50) with the plurality of signals received from the multibeam antenna (48) to null the jamming signal.
摘要翻译：提供了一种用于对具有多波束天线（48），相关器（72）和天线方向图计算器（94），顺序更新器（90）和波束形成器（70）的干扰信号进行零位的天线归零系统（28）。多波束天线（48）包括多个天线元件（50），并且可操作以接收多个信号。相关器（72）可操作以从天线元件（50）之一接收至少一个采样信号，并从多个天线元件（50）接收复合信号。相关器（72）确定采样信号和复合信号的互相关。天线图案计算器（94）计算多波束天线（48）的适应天线方向图和静态天线方向图的幅度差。顺序更新器（90）基于每个天线元件（50）的现有权重，互相关和模式幅度差顺序地计算每个天线元件（50）的新权重。波束形成器（70）与多波束天线（48）和顺序更新器（90）通信，以将每个天线元件（50）的新加权与从多波束天线（48）接收的多个信号组合到清除干扰信号。

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