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    Electronic phase shifter with enhanced phase shift performance
    1.
    发明申请
    Electronic phase shifter with enhanced phase shift performance 失效

    公开(公告)号：US20050104687A1

    公开(公告)日：2005-05-19

    申请号：US11022483

    申请日：2004-12-22

    Applicant: Bing Chiang ,  James Proctor ,  Kenneth Gainey

    Inventor： Bing Chiang ,  James Proctor ,  Kenneth Gainey

    IPC: H01P1/185 ,  H01P1/18

    CPC classification number: H01P1/185

    Abstract: 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
    7.
    发明申请
    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：US20050174298A1

    公开(公告)日：2005-08-11

    申请号：US11101914

    申请日：2005-04-08

    Applicant: Bing Chiang ,  Kenneth Gainey ,  James Proctor ,  Antoine Rouphael ,  Griffin Gothard ,  Michael Lynch

    Inventor： Bing Chiang ,  Kenneth Gainey ,  James Proctor ,  Antoine Rouphael ,  Griffin Gothard ,  Michael Lynch

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

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

    Abstract: 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.

    Abstract translation: 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。

    Cavity antenna for wireless electronic devices
    10.
    发明授权
    Cavity antenna for wireless electronic devices 有权
    无线电子设备的腔体天线

    公开(公告)号：US08174452B2

    公开(公告)日：2012-05-08

    申请号：US12238384

    申请日：2008-09-25

    Applicant: Enrique Ayala Vazquez ,  Hao Xu ,  Gregory A. Springer ,  Bing Chiang ,  Eduardo Lopez Camacho ,  Douglas B. Kough

    Inventor： Enrique Ayala Vazquez ,  Hao Xu ,  Gregory A. Springer ,  Bing Chiang ,  Eduardo Lopez Camacho ,  Douglas B. Kough

    IPC: H01Q1/24

    CPC classification number: H01Q1/2266 ,  H01Q1/36 ,  H01Q5/371

    Abstract: Wireless portable electronic devices such as laptop computers are provided with cavity-backed monopole antennas. A wireless device may have a housing. Conductive portions of the housing such as a conductive outer metal layer and internal frame structures may form a cavity having conductive walls. An antenna resonating element structure may be formed from monopole antenna resonating element arms of dissimilar lengths. One of the arms may be straight and another of the arms may be implemented using a meandering path. The antenna resonating element may be mounted over the cavity to form a cavity-backed monopole antenna. A display within the device may be covered by a cover glass. An opaque bezel region around the periphery of the cover glass may cover the antenna and block it from view. The antenna resonating element arms may run parallel to the longitudinal axis of the cavity.

    Abstract translation: 诸如膝上型计算机的无线便携式电子设备设置有腔背单极天线。 无线设备可以具有外壳。 诸如导电外金属层和内部框架结构的壳体的导电部分可以形成具有导电壁的空腔。 天线谐振元件结构可以由具有不同长度的单极天线谐振元件臂形成。 一个臂可以是直的，另一个臂可以使用曲折的路径来实现。 天线谐振元件可以安装在空腔上，以形成空腔支撑的单极天线。 装置内的显示器可以被盖玻璃覆盖。 盖玻璃周围的不透明的边框区域可以覆盖天线并阻挡它。 天线谐振元件臂可以平行于空腔的纵向轴线延伸。

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