| 摘要 |
1,013,090. Travelling wave tubes. SIEMENS & HALSKE A.G. Oct. 14, 1964 [Oct. 15, 1963], No. 41842/64. Addition to 958,923. Heading H1D. A travelling-wave tube has a helix-derived delay line 2 supported within a hollow conductor by metallic supports 5, the structure being formed of a plurality of stampings, each stamping taking the form of two parallel longitudinal spars 3 joined by a series of transverse crossmembers each of which meets one of the spars at a location displaced longitudinally with respect to the location at which it meets the other spar, wherein the cross-members are shaped to form part of a convolution of the helix and parts of two supports, one of which supports is at each end of the part of a convolution. As shown, six stampings are assembled by bending round a mandrel to form a helix-derived delay line, the spars of each stamping being disposed at 60 degrees to each other, and the assembly is supported within six equally spaced slots formed on the inner surface of a hollow conductor, Fig. 3 (not shown), the depth of the slots being equal to the width of the spars, and the width of the slots being equal to twice the thickness of the stampings. The stampings are preferably soldered into the slots. Alternatively, the hollow conductor is formed from a series of segments interposed between spars of the stampings. |
