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44 条记录 (耗时 0.027 秒)

    Equal power amplifier system for active phase array antenna and method of arranging same
    31.
    发明授权
    Equal power amplifier system for active phase array antenna and method of arranging same 失效
    用于有源相位阵列天线的等功率放大器系统及其布置方法

    公开(公告)号：US4825172A

    公开(公告)日：1989-04-25

    申请号：US32126

    申请日：1987-03-30

    申请人： James D. Thompson

    发明人： James D. Thompson

    IPC分类号： H01Q3/30 ,  H01P5/12 ,  H01Q3/22 ,  H01Q21/22 ,  H03F3/60 ,  H03F3/68

    CPC分类号： H01Q21/22 ,  H01Q3/22 ,  H03F3/602 ,  H03F2200/198 ,  Y10S343/02

    摘要： An equal power amplifier system (100) for amplifying a plurality of signals for transmission by an active phase array antenna (20), and a compact plural level beam-forming network (98) for forming a plurality of such signals, for example on excitation patterns for frequency scanned virtual beams, are disclosed. The amplifier system uses at most only a few sizes of power amplifiers (130, 134) to amplify efficiently numerous signals having significantly different amplitudes. This is accomplished by distributing the task of amplifying signal pairs (A.sub.i, B.sub.i) composed of one large amplitude signal and one small amplitude signal to an equal power amplifying apparatus (130; 230), which includes two hybrid couplers (236, 238) and two equally sized power amplifiers (232, 234). The first hybrid coupler (236) divides the two signals (A.sub.i, B.sub.i) for input into the two power amplifiers. The second hybrid coupler (238) receives the intermediate amplified signals from the power amplifiers and through constructive and destructive interference produces amplified output signals (A.sub.i *, B.sub.i *) corresponding to the input signals. Also disclosed is a method for properly selecting pairs of signals from an amplitude distribution (200; 202) for application of such equal power amplifying apparatuses of the amplifier system in order to operate the power amplifiers therein at or near peak efficiency. The beam-forming network (98) is arranged on two levels to simplify interconnection of the selected pairs of outputs of its line summers (176) for input into the equal power amplifier system. The amplifier system and beam-forming network may be used together, for example, in the transmit antenna system of a geosynchronous satellite (10) or mobile earth station.

    摘要翻译： 一种用于放大多个信号以用于由有源相位阵列天线（20）传输的等功率放大器系统（100），以及用于形成多个这样的信号的紧凑多电平波束形成网络（98），例如激励 公开了用于频率扫描的虚拟光束的图案。 放大器系统最多只使用几种尺寸的功率放大器（130,134）来有效放大具有明显不同幅度的许多信号。 这是通过将由一个大振幅信号和一个小振幅信号组成的放大信号对（Ai，Bi）的任务分配给包括两个混合耦合器（236,238）的等功率放大装置（130,230）来实现的，以及 两个相同尺寸的功率放大器（232,234）。 第一混合耦合器（236）将用于输入的两个信号（Ai，Bi）分成两个功率放大器。 第二混合耦合器（238）接收来自功率放大器的中间放大信号，并通过建构性和相消干扰产生对应于输入信号的放大输出信号（Ai *，Bi *）。 还公开了一种用于从振幅分布（200; 202）中正确选择信号对以应用放大器系统的这种相等的功率放大装置的方法，以便在峰值效率或接近峰值效率下操作其中的功率放大器。 波束形成网络（98）被布置在两个层次上以简化其线路加法器（176）的所选择的输出对对的互连以便输入到等功率放大器系统中。 放大器系统和波束形成网络可以一起使用，例如在地球同步卫星（10）或移动地球站的发射天线系统中。

    Reconfigurable beam antenna
    32.
    发明授权
    Reconfigurable beam antenna 失效
    可重构波束天线

    公开(公告)号：US4799065A

    公开(公告)日：1989-01-17

    申请号：US885981

    申请日：1986-07-15

    申请人： James D. Thompson

    发明人： James D. Thompson

    IPC分类号： H01Q3/26

    CPC分类号： H01Q3/2658

    摘要： A reconfigurable beam antenna system (12) comprises focusing means, a plurality of antenna elements (A, B, C, and D), a feed network (14), and a variable beam controlling means (16). The focusing means has a reflecting surface (18) which is adapted to reflect a plurality of electromagnetic energy signals. The feed network (14) comprises a plurality of feed ports (I1, I2, I3, and I4), a first plurality of hybrid couplers (30 and 32) connected to the feed ports, a plurality of phase shifters (34 and 36) connected to the first plurality of hybrid couplers, a second plurality of hybrid couplers 38 and 40 connected to both the first plurality of hybrid couplers and the phase shifters, and a plurality of antenna ports (01, 02, 03 and 04) connected to both the second plurality of hybrid couplers and the antenna elements (A, B, C, and D). The variable beam controlling means comprises a variable phase shifter (50) connected to one of the feed ports, a variable power coupler (60) connected to both another feed port and the variable phase shifter, and a plurality of channel network means (CH1, CH2, CH3 and CH4) connected to the variable power coupler.

    摘要翻译： 可重构波束天线系统（12）包括聚焦装置，多个天线元件（A，B，C和D），馈电网络（14）和可变波束控制装置（16）。 聚焦装置具有适于反射多个电磁能信号的反射表面（18）。 馈电网络（14）包括多个馈电端口（I1，I2，I3和I4），连接到馈电端口的多个混合耦合器（30和32），多个移相器（34和36） 连接到第一多个混合耦合器，连接到第一多个混合耦合器和移相器的第二多个混合耦合器38和40以及连接到两个耦合器的多个天线端口（01,02,03和04） 第二多个混合耦合器和天线元件（A，B，C和D）。 可变光束控制装置包括连接到馈送端口之一的可变移相器（50），连接到另一馈电端口和可变移相器的可变功率耦合器（60），以及多个信道网络装置（CH1， CH2，CH3和CH4）连接到可变功率耦合器。

    Ribbed fiber panel and means and method of manufacture
    33.
    发明授权
    Ribbed fiber panel and means and method of manufacture 失效
    罗纹纤维面板及其制造方法和方法

    公开(公告)号：US4199394A

    公开(公告)日：1980-04-22

    申请号：US930666

    申请日：1978-08-03

    申请人： James D. Thompson

    发明人： James D. Thompson

    IPC分类号： E04C2/22 ,  E04C2/38

    CPC分类号： E04C2/22 ,  E04C2/38 ,  Y10T156/101

    摘要： A high strength ribbed panel assembly formed of laminated plastic impregnated fibrous sheet stock to form a flat panel member; the panel member including a surface lamination which is provided with sets of multiple laminations integral with the surface lamination and extending laterally therefrom to form a series of spaced reinforcing ribs; a pair of the panel assemblies may be so proportioned as to be joined with their ribs in overlapping, mutually bonded relation to form a pallet suitable for shipping and storage.The method of manufacturing involves the steps of forming the ribs by progressively folding selected portions of a plastic impregnated fibrous sheet into mutual contact to form a plurality of multi-laminated ribs, applying additional laminations over the plastic sheet to form a panel assembly, then joining a pair of assemblies with their respective ribs bonded together. The means of manufacture involves means for carrying out the method.

    摘要翻译： 一种高强度肋板组件，由叠层塑料浸渍的纤维片材形成，以形成平板构件; 所述面板构件包括表面层压，所述表面层压件设置有与所述表面层压体一体并且从其横向延伸的多个叠片的组，以形成一系列间隔开的加强肋; 一对面板组件可以如此成比例地与它们的肋以重叠的相互结合的关系连接，以形成适于运输和存储的托盘。 制造方法包括以下步骤：通过逐渐折叠塑料浸渍的纤维片的选定部分相互接触形成肋，以形成多个多层叠肋，在塑料片上施加额外的叠片以形成面板组件，然后连接 一对具有各自的肋结合在一起的组件。 制造手段涉及执行该方法的手段。

    Satellite transmission system with adaptive transmission loss compensation
    34.
    发明授权
    Satellite transmission system with adaptive transmission loss compensation 有权
    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。

    Low IMD amplification method and apparatus
    38.
    发明授权
    Low IMD amplification method and apparatus 失效
    低IMD放大方法和装置

    公开(公告)号：US5966048A

    公开(公告)日：1999-10-12

    申请号：US977724

    申请日：1997-11-25

    申请人： James D. Thompson

    发明人： James D. Thompson

    IPC分类号： H01Q3/40 ,  H03F1/32 ,  H03F3/60 ,  H03F3/68 ,  H04L5/06

    CPC分类号： H04L5/06 ,  H03F1/3223 ,  H03F3/602 ,  H03F2200/198

    摘要： Amplifier-induced intermodulation distortion (IMD) is reduced by encoding a multi-frequency input composite signal into multiple encoded signals that vary from each other in their power amplitudes as a function of frequency, amplifying the encoded signals, and then decoding them in a complementary fashion so as to differentiate between the amplified signal components and the IMD components. The amplified signal components are coherently combined to separate them from the IMD components, which are incoherently combined. The input signal is preferably encoded by dividng it into multiple divided signals, introducing relative phase shifts between the divided signals that vary as a function of frequency, and combining the divided and phase shifted signals with each other in a Butler matrix prior to amplification. The phase shifts are introduced by means of time delays that are preferably equal to integer multiples of 4.PI. divided by the input signal bandwidth.

    摘要翻译： 通过将多频输入复合信号编码为多个编码信号来减少放大器引起的互调失真（IMD），所述多个编码信号在其功率幅度中彼此不同，作为频率的函数，放大编码信号，然后以补码 以便区分放大的信号分量和IMD分量。 放大的信号分量被相干地组合以将它们与IMD分量分开，这些分量被不相干地组合。 输入信号优选地通过将其分频成多个分频信号进行编码，引入在作为频率的函数变化的分频信号之间的相对相移，并且在放大之前将Butler矩阵中的分频信号和相移信号组合。 通过时间延迟引入相移，优选地等于4 + 529的整数倍除以输入信号带宽。