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    Directional coupler having interdigital comb electrodes
    1.
    发明授权
    Directional coupler having interdigital comb electrodes 失效
    具有叉指梳状电极的定向耦合器

    公开(公告)号：US4027254A

    公开(公告)日：1977-05-31

    申请号：US653861

    申请日：1976-01-30

    申请人： David John Gunton ,  Edward George Sydney Paige

    发明人： David John Gunton ,  Edward George Sydney Paige

    IPC分类号： H03D9/06 ,  H01P5/18

    CPC分类号： H01P5/185

    摘要： A directional coupler comprising a dielectric substrate having two opposing faces carrying a sheet electrode on one face and two comb like electrode structures on the other face. Each comb electrode has finger like electrodes projecting from a bus bar towards the other comb. Varying the length of finger electrodes and the amount of overlap varies the amount of signal power coupled between the two combs. Couplers may be arranged to couple up to 100% of signal power. When half signal power is coupled, a 3dB coupler, various microstrip circuits may be built e.g. balanced mixers, power dividers, or power combiners.

    摘要翻译： 一种定向耦合器，包括具有两个相对面的电介质衬底，所述两个相对面在一个面上承载片状电极，在另一个面上具有两个梳状电极结构 每个梳状电极具有从汇流条向另一个梳子突出的手指状电极。 改变手指电极的长度和重叠量改变耦合在两个梳子之间的信号功率的量。 耦合器可以布置成耦合高达100％的信号功率。 当半信号功率耦合时，3dB耦合器可以构建各种微带电路。 平衡混频器，功率分配器或功率组合器。

    Surface acoustic wave devices
    2.
    发明授权
    Surface acoustic wave devices 失效
    声表面波器件

    公开(公告)号：US3975697A

    公开(公告)日：1976-08-17

    申请号：US601687

    申请日：1975-08-01

    申请人： Edward George Sydney Paige

    发明人： Edward George Sydney Paige

    IPC分类号： H03H9/145 ,  H03H3/08 ,  H03H9/42 ,  H03H9/44 ,  H03H9/64 ,  H03H9/26 ,  H01L41/18 ,  H03H9/30 ,  H03H9/32

    CPC分类号： H03H9/44

    摘要： A surface acoustic wave device comprises a substrate able to support surface acoustic waves, an input transducer for launching surface acoustic waves along a first track on the substrate, an output transducer for receiving surface acoustic waves from a second track on the substrate, and first and second reflective array structures arranged to reflect surface acoustic waves from the first track into the second track, the first and second reflective array structures each comprising numerous reflecting strips or grooves arranged parallel to one another in echalon across the first and second tracks respectively. Varying the lengths of the reflecting elements provides weighting of signals passing through the device, and varying the spacing between the reflecting elements provides pulse compression or expansion with a frequency sweep.

    摘要翻译： 表面声波装置包括能够支撑表面声波的基板，用于沿着基板上的第一轨道发射表面声波的输入换能器，用于从基板上的第二轨道接收表面声波的输出换能器，以及第一和 第二反射阵列结构被布置成将来自第一轨道的表面声波反射到第二轨道，第一和第二反射阵列结构各自包括分别跨越第一和第二轨道的echalon彼此平行布置的多个反射条或槽。 改变反射元件的长度提供通过设备的信号的加权，并且改变反射元件之间的间隔，提供脉冲压缩或扩展与频率扫描。