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To improve the efficiency of beam-wave interaction and the gain of the microstrip angular log-periodic meander-line (MALPML) travelling wave tube (TWT), a modified phase velocity tapered MALPML (PVT-MALPML) with 45° chamfer is proposed in this study. Compared with MALPML slow wave structure (SWS), the PVT-MALPML SWS has better transmission characteristics. Meanwhile, the beam-wave interaction simulation...
A novel taper ridge-vane loaded folded waveguide (FWG) slow wave structure (SWS) for 140 GHz traveling wave tube (TWT) has been presented in this paper. The electromagnetic characteristics and beam-wave interaction of this kind of structure are calculated. It is shown from our calculation results that the new kind of circuit is a promising SWS for developing a wide band highpower millimeter wave,...
A novel slow wave structure with low work voltage, high work current, compact structure was proposed by using radial spiral waveguide. The dispersion and transmission character was analyzed by computer simulation, and its work voltage was obtained, which could be as low as several hundred Volts. As the emitter face of cylinder gun larger than ordinary TWT's, it is possible to produce a high current...
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