Travelling wave tubes

专利名称：Travelling wave tubes发明人：ROGERS DOUGLAS CECIL申请号：US407732申请日：190202公开号：US20370A公开日：19590609

摘要：836,219. Travelling-wave tubes. STANDARD TELEPHONES & CABLES Ltd. Jan. 8,1957, No. 713/57. Class 39(1). A travelling-wave tube mounting and focusing unitcomprises an input and output rectangular waveguide 9, 10, Fig. 1, respectively, eachapertured through their wide walls to surround respectively the input and output ends oftube 1, a focusing solenoid 15 extending between the waveguides and further solenoids14, 16 at each end beyond the waveguides, and, at least in conjunction with the outputwaveguide, a pair of sheets 18, 19, Figs. 2, 3, of low reluctance magnetic materialapertured to surround the tube, arranged to abut against the outside of the oppositewide waveguide walls 10 and extending beyond the width of the walls; and a pair ofsimilarly-oriented permanent magnets 20 extending between and contacting the pair ofsaid sheets and lying one on each narrow wall of the waveguide. The length of eachmagnet may be 1¢ times the wide dimension of the waveguide. The sheets 18, 19 areslotted partially at 24 to reduce transverse fields. The permanent magnets maintain auniform field along the tube.

申请人：INTERNATIONAL STANDARD ELECTRIC CORPORATION

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