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    Multiple beam steered subarrays antenna system
    6.
    发明授权
    Multiple beam steered subarrays antenna system 失效
    多波束转向子阵列天线系统

    公开(公告)号：US07064710B1

    公开(公告)日：2006-06-20

    申请号：US11058116

    申请日：2005-02-15

    申请人： David A. Ksienski ,  James P. McKay

    发明人： David A. Ksienski ,  James P. McKay

    IPC分类号： H01Q3/24

    CPC分类号： H01Q21/0006 ,  H01Q3/26

    摘要： A phased array antenna system divides the array into a plurality of subarrays that are driven by fine phase shifters with each subarray having a plurality of antenna elements driven by respective coarse phase shifters that are preferably MEMS coarse phase shifters having low weight and low cost and are infrequently used for improved reliability for selecting a coarse beam coverage area while the fine phase shifters are used to scan a high-gain antenna pattern within the selected coarse beam coverage area. Two-bit MEMS phase shifters are used to scan the beams from subarrays to various coverage areas within the required antenna field of view, thereby providing coarse beam steering for an array.

    摘要翻译： 相控阵天线系统将阵列划分为由精细移相器驱动的多个子阵列，其中每个子阵列具有由相应粗略移相器驱动的多个天线元件，优选地是具有低重量和低成本的MEMS粗移相器，并且分别是 很少用于提高用于选择粗略的波束覆盖区域的可靠性，而精细移相器用于扫描所选择的粗波束覆盖区域内的高增益天线方向图。 使用两位MEMS移相器将所述子阵列的波束扫描到所需天线视场内的各个覆盖区域，从而为阵列提供粗波束导向。

    Virtual Aperture Radar
    9.
    发明申请
    Virtual Aperture Radar 审中-公开
    虚拟孔径雷达

    公开(公告)号：US20140028494A1

    公开(公告)日：2014-01-30

    申请号：US13558643

    申请日：2012-07-26

    申请人： David A. Ksienski ,  Samuel S. Osofsky ,  Adam M. Chandler

    发明人： David A. Ksienski ,  Samuel S. Osofsky ,  Adam M. Chandler

    IPC分类号： G01S13/90

    CPC分类号： G01S13/90 ,  G01S13/887

    摘要： A VAR system is disclosed. The VAR system may steer a beam to create an illusion of a moving aperture. As a result, a target may be illuminated at different angles to form an image. For example, the VAR system may include a transmission and receiving unit configured to steer a beam, such that a plurality of virtual aperture radars are created behind a reflector. The reflector may be configured to direct the beam to a target, and redirect a plurality of reflected beams from the target to the transmission and receiving unit.

    摘要翻译： 公开了一种VAR系统。 VAR系统可以引导光束以产生移动光圈的错觉。 结果，可以以不同的角度照射目标以形成图像。 例如，VAR系统可以包括被配置为引导光束的发射和接收单元，使得在反射器后面创建多个虚拟孔径雷达。 反射器可以被配置为将光束引导到目标，并且将多个反射光束从目标重定向到发射和接收单元。

    Multiple signal intermodulation reduction system
    10.
    发明授权
    Multiple signal intermodulation reduction system 有权
    多信号互调减少系统

    公开(公告)号：US07256649B2

    公开(公告)日：2007-08-14

    申请号：US11057979

    申请日：2005-02-15

    申请人： David A. Ksienski ,  Keven S. MacGowan ,  Samuel S. Osofsky ,  Albert M. Young ,  Thomas T. Tam

    发明人： David A. Ksienski ,  Keven S. MacGowan ,  Samuel S. Osofsky ,  Albert M. Young ,  Thomas T. Tam

    IPC分类号： H03F3/68 ,  H04L25/49

    CPC分类号： H03F1/3223 ,  H03F1/26 ,  H03F3/602 ,  H03F2200/204 ,  H03F2200/372

    摘要： An intermodulation product reduction or cancellation amplifier received two input signals that are split in quadrature wherein the inphase outputs are summed and then amplified as an inphase signal, and the quadrature outputs are fixed-phase phase-shifted, then summed and then amplified as a quadrature signal. The inphase and quadrature signals are fed into an output hybrid for canceling intermodulation products, where the fixed-phase phase shift is +/−60° for reducing 3rd order, +/−36° for reducing 5th order, and +/−25.71° for reducing 7th order intermodulation products, for examples, for improved signal communications of the two signals over a common antenna or link.

    摘要翻译： 互调产品减少或消除放大器接收到两个正交分割的输入信号，其中同相输出被相加，然后被放大为同相信号，正交输出是固定相位相移，然后求和然后被放大为正交 信号。 同相和正交信号被馈送到输出混合中以消除互调产物，其中固定相位相移为+/- 60°以减少3阶，+/- 36°以减小5阶和+/- 25.71° 例如，为了减少第七阶互调产物，用于通过公共天线或链路改善两个信号的信号通信。