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    ANTENNA END FILTER ARRANGEMENT
    1.
    发明公开
    ANTENNA END FILTER ARRANGEMENT 有权
    天线最终过滤器

    公开(公告)号：EP1817846A1

    公开(公告)日：2007-08-15

    申请号：EP05803809.2

    申请日：2005-11-07

    申请人： Powerwave Comtek Oy

    发明人： ALA-KOJOLA, Jouni ,  NIIRANEN, Erkki

    IPC分类号： H04B1/04 ,  H04B7/02 ,  H01P7/04

    CPC分类号： H04B7/0854 ,  H01P1/2053 ,  H04B1/44

    摘要： An arrangement for filtering the transmitting signals in a radio device using frequency division duplex. In a radio transmitter, in which the transmitting signal is divided to a plurality of antennas (ANT1 , ANT2, ANT3) radiating to different sectors, the filtering required in transmitting is mostly carried out by a shared transmitting filter (240) before the transmitting signal is divided. The rest of the filtering is carried out separately on each partial transmitting signal (T1; T2; T3) in the reduced transmitting side (TXF1 ; TXF2; TXF3) of the duplex filter. The filters and the divider (250) preferably form an integrated filter unit, in which they are connected to each other by simple coupling elements. The space required by the filters of the antenna end of the radio device is significantly reduced, and the material and assembly costs of the antenna end in production are reduced.

    DIRECTIONAL COUPLER
    2.
    发明公开
    DIRECTIONAL COUPLER 有权
    定向耦合器

    公开(公告)号：EP2022130A1

    公开(公告)日：2009-02-11

    申请号：EP07730703.1

    申请日：2007-04-23

    申请人： Powerwave Comtek Oy

    发明人： NIIRANEN, Erkki

    IPC分类号： H01P5/18

    CPC分类号： H01P5/185 ,  H01P5/187

    摘要： A directional coupler (500), which comprises a dielectric substrate (501) on top of a metal plate (510), is functioning as a ground plane. The transmission path is a suspended stripling so that there is a recess on the ground plane below the transmission conductor (520) being on the surface of the substrate. The sensing conductor (530) is a very small-sized conductive strip on the surface of the substrate. It has been connected from its head end to the measurement port (P3) and from its tail end via a termination resistor (550) to a small ground strip (515). The ground strip is next to the sensing conductor on the side of the output port (P2) of the directional coupler. With such an asymmetric structure, some directivity is obtained despite the small size of the sensing conductor. Also below the sensing conductor (530) there is a recess (506) on the ground plane, which joins the recess below the transmission conductor (520). By dimensioning the recess below the sensing conductor suitably, the velocities of the even and odd waveform occurring in the line constituted by it and the ground plane are obtained the same and thus directivity can be improved. The directional coupler is very space saving on the circuit board. As the substrate, an ordinary circuit board material can be used, whereby the board can have in addition to the directional coupler also other parts of radio-frequency circuits. The directional coupler does not require tuning in production.

    摘要翻译： 包括在金属板（510）顶部上的电介质衬底（501）的定向耦合器（500）用作接地平面。 传输路径是悬置的条纹，使得在传输导体（520）下方的接地平面上存在位于衬底表面上的凹陷。 感测导体（530）是衬底表面上的非常小尺寸的导电条。 它已经从其首端连接到测量端口（P3），并从其尾端经由终端电阻器（550）连接到小型接地带（515）。 接地条位于定向耦合器输出端口（P2）侧的感应导体旁边。 采用这种不对称结构，尽管感应导体尺寸较小，但仍可获得一些指向性。 同样在传感导体（530）的下方，在接地平面上有一个凹槽（506），它与传输导体（520）下方的凹槽相连。 通过适当地确定传感导体下面的凹槽的尺寸，可以获得由它构成的直线和接地平面中出现的偶数和奇数波形的速度相同，因此可以提高方向性。 定向耦合器在电路板上非常节省空间。 作为衬底，可以使用普通的电路板材料，由此电路板除了定向耦合器之外还可以具有射频电路的其他部分。 定向耦合器不需要调整生产。