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    Low profile dipole antenna for use in wireless communications systems
    4.
    发明授权
    Low profile dipole antenna for use in wireless communications systems 有权
    用于无线通信系统的低调偶极天线

    公开(公告)号：US06369771B1

    公开(公告)日：2002-04-09

    申请号：US09773377

    申请日：2001-01-31

    申请人： Bing Chiang ,  Kenneth M. Gainey ,  Griffin K. Gothard ,  Christopher A. Snyder

    发明人： Bing Chiang ,  Kenneth M. Gainey ,  Griffin K. Gothard ,  Christopher A. Snyder

    IPC分类号： H01Q928

    CPC分类号： H01Q9/40 ,  H01Q1/242 ,  H01Q9/28

    摘要： A dipole antenna for use with a mobile subscriber unit in a wireless network communications system. The antenna is fabricated with printed circuit board (PCB) photo-etching techniques for precise control of the printed structure. The dipole antenna includes a planar substrate made of dielectric material. A conductive planar element is layered on one side of the substrate in an upper region of the substrate, and a conductive planar ground patch is layered on the other side of the substrate in a lower region of the substrate. That is, the conductive planar element is stacked above the conductive planar ground patch. A feed strip is connected to the bottom of the conductive planar element, and extends from the element to a bottom edge of the substrate and terminates at a bottom feed point. Typically, the feed point is connected to a transmission line for transmitting signals to and receiving signals from the dipole antenna. The conductive planar ground patch includes a bottom end for connecting the ground patch to a ground plane upon which the dipole antenna is mounted. The ground plane is aligned orthonormal to the antenna. Capacitive coupling between the conductive planar element and the conductive ground patch creates a junction which provides an upper dipole feed point in a mid-region of the substrate such that the conductive planar element acts as one element of an unbalanced dipole antenna and the conductive planar ground patch acts as the other element of the unbalanced dipole antenna. The unbalanced dipole antenna forms a beam which may be positionally directed along a horizon that is substantially parallel to the ground plane.

    摘要翻译： 一种与无线网络通信系统中的移动用户单元一起使用的偶极天线。 天线采用印刷电路板（PCB）光蚀刻技术制造，用于精确控制印刷结构。 偶极天线包括由介电材料制成的平面基板。 导电平面元件在基板的上部区域的一侧上层叠，并且在基板的下部区域中的基板的另一侧上层叠导电性平面接地片。 也就是说，导电平面元件堆叠在导电平面接地片上方。 馈电条连接到导电平面元件的底部，并且从元件延伸到衬底的底部边缘并终止于底部馈电点。 通常，馈电点连接到用于向偶极天线发送信号并从其接收信号的传输线。 导电平面接地片包括用于将接地片连接到安装偶极天线的接地平面的底端。 接地平面与天线对准正交。 导电平面元件和导电接地片之间的电容耦合产生一个结，其在衬底的中间区域中提供上偶极馈电点，使得导电平面元件充当不平衡偶极天线和导电平面接地的一个元件 补片作为非平衡偶极子天线的另一个元件。 不平衡偶极子天线形成可以沿着基本上平行于接地平面的水平线定位的光束。

    Directional antenna
    8.
    发明授权
    Directional antenna 有权
    定向天线

    公开(公告)号：US06762722B2

    公开(公告)日：2004-07-13

    申请号：US10282955

    申请日：2002-10-28

    申请人： Bing Chiang ,  William R. Palmer ,  Griffin K. Gothard ,  Christopher A. Snyder

    发明人： Bing Chiang ,  William R. Palmer ,  Griffin K. Gothard ,  Christopher A. Snyder

    IPC分类号： H01Q138

    CPC分类号： H01Q9/28 ,  H01Q1/08 ,  H01Q1/241 ,  H01Q3/446 ,  H01Q3/46 ,  H01Q9/285 ,  H01Q9/38 ,  H01Q19/28 ,  H01Q19/30 ,  H01Q19/32 ,  H01Q21/062 ,  H01Q21/205

    摘要： A directional antenna having a number, N, of outlying monopole antenna elements. These monopole elements are formed as a first upper conductive segment on a portion of a dielectric substrate. The array also includes the same number, N, of image elements. The image elements are formed as a second set of lower conductive segments on the same substrate as the upper conductive segments. The image elements, generally having the same length and shape as the monopole elements, are connected to a ground reference potential. To complete the array, an active antenna element is also disposed on the same substrate, adjacent to at least one of the monopole elements. In a preferred arrangement, the passive monopole elements and corresponding image elements are selectively connected to operate to in either a reflective or directive mode, such as via a switchable coupling circuit that selectively changes the impedances connected between them.

    摘要翻译： 具有N个外围单极天线元件的定向天线。 这些单极元件形成为介电基片的一部分上的第一上导电段。 该阵列还包括相同数量的N个图像元素。 图像元件形成为与上导电段相同的衬底上的第二组下导电段。 通常具有与单极元件相同的长度和形状的图像元件连接到接地参考电位。 为了完成阵列，有源天线元件也设置在与至少一个单极元件相邻的同一衬底上。 在优选的布置中，无源单极子元件和对应的图像元件被选择性地连接以在反射或指向模式中操作，诸如经由可选择的耦合电路，其选择性地改变它们之间连接的阻抗。