DIRECTIONAL ANTENNA
    4.
    发明公开
    DIRECTIONAL ANTENNA 审中-公开
    RICHTANTENNE

    公开(公告)号:EP1556922A2

    公开(公告)日:2005-07-27

    申请号:EP03781378.9

    申请日:2003-10-28

    IPC分类号: H01Q3/24 H01Q21/00

    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 of 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.

    BEAMFORMING USING A BACKPLANE AND PASSIVE ANTENNA ELEMENT
    5.
    发明公开
    BEAMFORMING USING A BACKPLANE AND PASSIVE ANTENNA ELEMENT 审中-公开
    使用背板和被动天线元件进行波束形成

    公开(公告)号:EP1497890A2

    公开(公告)日:2005-01-19

    申请号:EP03705876.5

    申请日:2003-01-22

    IPC分类号: H01Q1/24

    CPC分类号: H01Q19/32 H01Q3/446 H01Q19/10

    摘要: An active antenna element (120) to transmit and/or receive RF (Radio Frequency) signals is positioned in relation to a backplane (130) that reflects RF signals. One or more passive antenna elements (110, 112) can be disposed on a similar side of the backplane as the active antenna element. Settings of the one or more passive antenna elements are adjusting to produce an input/output beam pattern that varies depending on whether the at least one passive antenna element is reflective or transmissive. Based on this technique, an RF input output beam pattern of an antenna assembly including the backplane, active antenna element and passive antenna elements can be controlled for better reception and transmission of RF signals.

    摘要翻译: 发射和/或接收RF(射频)信号的有源天线元件(120)相对于反射RF信号的背板(130)定位。 一个或多个无源天线元件(110,112)可以设置在背板的与有源天线元件相似的一侧上。 一个或多个无源天线元件的设置被调整以产生根据至少一个无源天线元件是反射还是透射而变化的输入/输出波束图案。 基于这种技术,可以控制包括背板,有源天线元件和无源天线元件的天线组件的RF输入输出波束图,以更好地接收和发射RF信号。