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    Antenna device
    8.
    发明申请
    Antenna device 失效
    天线设备

    公开(公告)号：US20040246181A1

    公开(公告)日：2004-12-09

    申请号：US10490373

    申请日：2004-03-23

    发明人： Susumu Fukushima ,  Takeo Yasuho

    IPC分类号： H01Q001/38 ,  H01Q001/48

    CPC分类号： H01Q9/045 ,  H01Q1/38 ,  H01Q5/35 ,  H01Q9/0435 ,  H01Q9/0478 ,  H01Q13/106

    摘要： A small antenna has two or more feeding ports. A radiator is made of a planar conductor having a substantially circular shape having the diameter of a substantially half wavelength or a substantially regularly polygonal shape where the length of a diagonal line passes through the center point is the substantially half wavelength. A ground plate is faced to the radiator. On the radiator, the feeding ports are connected to feeding points on two orthogonal line segments passing through the center of the radiator. This antenna is used as not only a single antenna but also two independent antennas having secured isolation between the feeding ports. A small antenna device used as two independent antennas is thus provided. The radiator is formed in a hat shape having an edge, has an Stepped Impedance Resonator (SIR) structure where the diameter of a crest part is a quarter wavelength, and is shortened.

    摘要翻译： 小型天线具有两个或更多个馈送端口。 散热器由具有基本上圆形形状的平面导体制成，其具有基本上一半波长的直径或基本上规则的多边形形状，其中对角线的长度通过中心点是基本上一半的波长。 接地板面对散热器。 在散热器上，馈送端口连接到穿过散热器中心的两个正交线段上的馈电点。 该天线不仅用作单个天线，而且还用于在馈送端口之间具有固定隔离的两个独立天线。 因此，提供了用作两个独立天线的小型天线装置。 散热器形成为具有边缘的帽子形状，具有阶梯型阻抗谐振器（SIR）结构，其中波峰部分的直径为四分之一波长，并且缩短。

    Microstrip distribution network device for antennas
    9.
    发明授权
    Microstrip distribution network device for antennas 失效
    天线微带分配网络设备

    公开(公告)号：US06133877A

    公开(公告)日：2000-10-17

    申请号：US5367

    申请日：1998-01-09

    申请人： Jonas Sandstedt ,  Bjorn Johannisson ,  Goran Snygg

    发明人： Jonas Sandstedt ,  Bjorn Johannisson ,  Goran Snygg

    IPC分类号： H01Q9/04 ,  H01Q13/10 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/10 ,  H01Q1/38

    CPC分类号： H01Q21/10 ,  H01Q13/10 ,  H01Q21/064 ,  H01Q21/065 ,  H01Q21/08 ,  H01Q9/0478

    摘要： A device for microstrip distribution networks and for group antennas for the suppression of unwanted modes on the distribution network side of a microstrip distribution network. This thereby avoids, among other things, unwanted coupling between antenna elements connected to the microstrip distribution network. A waveguide substructure in principle designed as a U of extruded aluminium, is connected to the microstrip distribution network along two connection lines with at least two electrically-conductive connections to the ground plane of the microstrip distribution network along each connection line. Together with at least part of the ground plane, the waveguide substructure forms a waveguide structure. The waveguide structure is dimensioned so that it has a cut-off frequency that is higher than the highest frequency that is used in the microstrip distribution network. This suppresses unwanted modes generated by the group antenna and by discontinuities in the distribution network as the waveguide structure acts as a high-pass filter.

    摘要翻译： 用于微带分配网络和组天线的装置，用于抑制微带分配网络的分布网络侧的不需要的模式。 这因此避免了连接到微带分配网络的天线元件之间的不期望的耦合。 原理上被设计为挤出铝的U的波导子结构沿两个连接线连接到微带分配网络，该连接线具有沿着每个连接线与微带分配网络的接地平面的至少两个导电连接。 与至少一部分接地平面一起，波导子结构形成波导结构。 波导结构的尺寸使其具有高于在微带分配网络中使用的最高频率的截止频率。 由于波导结构充当高通滤波器，因此抑制由组天线产生的不期望的模式和分布网络中的不连续性。