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Drift field roehre with a change action circle for spatially harmonic mode of operation for producing or strengthening a very short electrical waves from the te - type
Drift field roehre with a change action circle for spatially harmonic mode of operation for producing or strengthening a very short electrical waves from the te - type
764,012. Travelling-wave tubes. WESTERN ELECTRIC CO., Inc. Oct. 15, 1954 [Oct. 16, 1953], No. 29758/54. Class 39(1). A travelling-wave amplifier operating on spatial harmonics of the transverse electric circular mode has a slow-wave circuit consisting of a succession of groups 11, Fig. 1, of conductive members, each group containing a plurality of coplanar members 13 which dissect the circular electric field lines into separate portions. As shown the wave guide consists of a stack of plates 12 each pierced with an aperture containing a number preferably odd, of sectors 13 joining to the edge by thin stems 14. The electron beams are fired either through the gaps 15 or through holes or channels in the sectors 13, and the thickness t and spacing d are chosen as explained in Specification 714,832 to give spatial harmonic operation ; for a oneinch diameter aperture, t = 0À075 in., d = 0À034 in. and 1200 volt electrons are synchronized at 9000 Mc. The entrance apertures may be graded from simple vanes as shown on the right, for impedance matching. Other forms of apertures may be simple vanes 41, 43, Fig. 4, staggered in successive plates and acting on an annular beam 44 ; or the staggered vanes 34, 35, Fig. 3, may carry wire loops 31 interdigitated as shown to enclose a number of beams 36. Alternate plates may be given a voltage difference to effect electrostatic focussing. Backward-wave operation may be employed.
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机译:764012。行波管。 WESTERN ELECTRIC CO。,Inc. 1954年10月15日[十月[1953年1月16日],编号29758/54。 39(1)类。在横向电圆形模式的空间谐波上工作的行波放大器具有一个慢波电路,该慢波电路由一系列导电构件组成,如图1所示,每组包含多个共面构件13,这些共面构件将圆弧解剖电场线分成单独的部分。如图所示,波导由一堆板12组成,每个板12上都开有一个孔,该孔中包含由奇数个细杆14连接到边缘的扇形区13,最好是奇数个。通过束隙15或通孔或通道发射电子束。在扇区13中,按照规范714832的说明选择厚度t和间距d,以进行空间谐波操作;对于直径为1英寸的孔,t = 0-075英寸,d = 0-034英寸,并且1200伏电子在9000 Mc下同步。如右图所示,入口孔可以由简单的叶片分级,以实现阻抗匹配。其他形式的孔可以是简单的叶片41、43(图4),该叶片在连续的板中交错并作用在环形梁44上。或如图3所示,交错的叶片34、35可带有如图所示相互交叉的线环31,以包围许多光束36。可给交替的板一个电压差以实现静电聚焦。可以采用后向波操作。
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