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    Electronic phase shifter with enhanced phase shift performance
    5.
    发明授权
    Electronic phase shifter with enhanced phase shift performance 失效

    公开(公告)号：US06992546B2

    公开(公告)日：2006-01-31

    申请号：US11022483

    申请日：2004-12-22

    申请人： Bing Chiang ,  James A. Proctor, Jr. ,  Kenneth M. Gainey

    发明人： Bing Chiang ,  James A. Proctor, Jr. ,  Kenneth M. Gainey

    IPC分类号： H01P1/18

    CPC分类号： H01P1/185

    摘要： A varactor based phase shifter that increases phase shift range using a lower characteristic impedance between quadrature ports than is used at its input/output ports. The circuit makes use of a four port coupler arrangement that imbeds a quarter wave impedance transformation between the input port and the quadrature ports as well as between the quadrature ports and the output port. The characteristic impedance across the quadrature ports is therefore less than the characteristic impedance across the input and output ports. In one implementation, reducing a characteristic input/output impedance of 50 to a 20 ohm quadrature port impedance results in a phase shift range increase of more than 50%.

    Low cost multiple pattern antenna for use with multiple receiver systems
    6.
    发明授权
    Low cost multiple pattern antenna for use with multiple receiver systems 失效
    低成本多模式天线，用于多个接收机系统

    公开(公告)号：US06894653B2

    公开(公告)日：2005-05-17

    申请号：US10664413

    申请日：2003-09-17

    申请人： Bing Chiang ,  Kenneth M. Gainey ,  James A. Proctor, Jr. ,  Antoine J. Rouphael ,  Griffin K. Gothard ,  Michael J. Lynch

    发明人： Bing Chiang ,  Kenneth M. Gainey ,  James A. Proctor, Jr. ,  Antoine J. Rouphael ,  Griffin K. Gothard ,  Michael J. Lynch

    IPC分类号： H01Q1/22 ,  H01Q3/26 ,  H01Q3/44 ,  H01Q9/16 ,  H01Q19/26 ,  H01Q19/32 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/20 ,  H01Q21/29 ,  H01Q3/00

    CPC分类号： H01Q3/2641 ,  H01Q1/22 ,  H01Q1/2258 ,  H01Q9/16 ,  H01Q19/26 ,  H01Q19/32 ,  H01Q21/08 ,  H01Q21/20 ,  H01Q21/29

    摘要： An antenna assembly includes at least two active or main radiating omni-directional antenna elements arranged with at least one beam control or passive antenna element used as a reflector. The beam control antenna element(s) may have multiple reactance elements that can electrically terminate it to adjust the input or output beam pattern(s) produced by the combination of the active antenna elements and the beam control antenna element(s). More specifically, the beam control antenna element(s) may be coupled to different terminating reactances to change beam characteristics, such as the directivity and angular beamwidth. Processing may be employed to select which terminating reactance to use. Consequently, the radiator pattern of the antenna can be more easily directed towards a specific target receiver/transmitter, reduce signal-to-noise interference levels, and/or increase gain by using Radio Frequency (RF), Intermediate Frequency (IF), or baseband processing. A Multiple-Input, Multiple-Output (MIMO) processing technique may be employed to operate the antenna assembly with simultaneous beam patterns.

    摘要翻译： 天线组件包括至少两个有源或主辐射全向天线元件，其布置有用作反射器的至少一个光束控制或无源天线元件。 波束控制天线元件可以具有多个电抗元件，其可以电气端接它，以调节由有源天线元件和波束控制天线元件的组合产生的输入或输出波束图案。 更具体地，波束控制天线元件可以耦合到不同的终止电抗以改变诸如方向性和角波束宽度的波束特性。 可以使用处理来选择要使用的终止电抗。 因此，通过使用射频（RF），中频（IF）或更高的频率，可以更容易地将天线的辐射器模式引向特定目标接收器/发射器，降低信噪比干扰电平和/或增加增益 基带处理。 可以采用多输入多输出（MIMO）处理技术来操作具有同时波束图案的天线组件。

    Low cost multiple pattern antenna for use with multiple receiver systems
    9.
    发明授权
    Low cost multiple pattern antenna for use with multiple receiver systems 失效
    低成本多模式天线，用于多个接收机系统

    公开(公告)号：US07253783B2

    公开(公告)日：2007-08-07

    申请号：US11101914

    申请日：2005-04-08

    申请人： Bing Chiang ,  Kenneth M. Gainey ,  James A. Proctor, Jr. ,  Antoine J. Rouphael ,  Griffin K. Gothard ,  Michael J. Lynch

    发明人： Bing Chiang ,  Kenneth M. Gainey ,  James A. Proctor, Jr. ,  Antoine J. Rouphael ,  Griffin K. Gothard ,  Michael J. Lynch

    IPC分类号： H01Q3/00

    CPC分类号： H01Q3/2641 ,  H01Q1/22 ,  H01Q1/2258 ,  H01Q9/16 ,  H01Q19/26 ,  H01Q19/32 ,  H01Q21/08 ,  H01Q21/20 ,  H01Q21/29

    摘要： An antenna assembly includes at least two active or main radiating omni-directional antenna elements arranged with at least one beam control or passive antenna element used as a reflector. The beam control antenna element(s) may have multiple reactance elements that can electrically terminate it to adjust the input or output beam pattern(s) produced by the combination of the active antenna elements and the beam control antenna element(s). More specifically, the beam control antenna element(s) may be coupled to different terminating reactances to change beam characteristics, such as the directivity and angular beamwidth. Processing may be employed to select which terminating reactance to use. Consequently, the radiator pattern of the antenna can be more easily directed towards a specific target receiver/transmitter, reduce signal-to-noise interference levels, and/or increase gain. A Multiple-Input, Multiple-Output (MIMO) processing technique may be employed to operate the antenna assembly with simultaneous beam patterns.

    摘要翻译： 天线组件包括至少两个有源或主辐射全向天线元件，其布置有用作反射器的至少一个光束控制或无源天线元件。 波束控制天线元件可以具有多个电抗元件，其可以电气端接它，以调节由有源天线元件和波束控制天线元件的组合产生的输入或输出波束图案。 更具体地，波束控制天线元件可以耦合到不同的终止电抗以改变诸如方向性和角波束宽度的波束特性。 可以使用处理来选择要使用的终止电抗。 因此，天线的辐射器图案可以更容易地指向特定的目标接收器/发射器，降低信噪比干扰电平和/或增加增益。 可以采用多输入多输出（MIMO）处理技术来操作具有同时波束图案的天线组件。