Anisotropic shell loading of high power helix traveling wave tubes
    3.
    发明授权
    Anisotropic shell loading of high power helix traveling wave tubes 失效
    大功率螺旋行波管的各向异性壳载荷

    公开(公告)号:US3903449A

    公开(公告)日:1975-09-02

    申请号:US47899774

    申请日:1974-06-13

    CPC classification number: H01J23/26

    Abstract: The helix of a high power traveling wave tube, i.e., in excess of ten watts cw, is supported from a thermally conductive barrelshaped metallic envelope via the intermediary of a plurality of beryllia or boron nitride rods disposed at circumferentially spaced locations around the periphery of the helix. The helix is anisotropically loaded for decreasing the positive dispersion or, in the alternative, producing a negative dispersion characteristic by means of a loading structure disposed surrounding the helix intermediate the helix and the barrel structure. In one embodiment, the loading structure comprises a plurality of arcuate quartz sectors having an array of longitudinally directed electrically conductive elements supported on the inside surface thereof adjacent the helix. In a second embodiment, the loading structure comprises a plurality of arcuate alumina sectors interposed between the helix and the surrounding barrel structure. These loading elements of both types greatly increase the operating bandwidth over which relatively high gain and efficiency are obtainable.

    Abstract translation: 高功率行波管的螺旋线,即超过十瓦特cw,由导热的桶形金属外壳经由多个环绕圆周间隔的位置周围设置的多个铍或氮化硼棒支撑, 的螺旋。 螺旋线被各向异性负载以减小正色散,或者替代地,通过设置在螺旋和圆筒结构之间的螺旋周围设置的负载结构产生负色散特性。 在一个实施例中,装载结构包括多个弓形石英扇区,其具有支撑在其邻近螺旋的内表面上的纵向导电的元件阵列。 在第二实施例中,装载结构包括介于螺旋和周围的桶结构之间的多个弧形氧化铝扇区。 这两种类型的这些加载元件大大增加了可获得相对高的增益和效率的工作带宽。

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