WebbThe invention discloses the slow-wave structure of a kind of helix TWT and the preparation method of this slow-wave structure, including being from inside to outside sequentially … Webb17 sep. 2024 · SUMMARY In global-scale seismic tomography, teleseismic P and PP waves mainly constrain structures in the upper two thirds of the mantle, whereas core-diffracted waves (Pdiff) constrain the lower third. This study is the first to invert a very large data set of Pdiff waves, up to the highest possible frequencies. This results in tomographic …
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Webb29 aug. 2024 · Planar staggered double-vane-loaded rectangular waveguide slow wave structure (SDV-SWS) is selected for the 0.22 THz TWT because of its wide bandwidth, … Webb15 okt. 2024 · Significance of slow wave structures, Floquets theorem, amplification process in Travelling Wave Tube buses crail to anstruther
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Webb10 apr. 2024 · Abstract An investigation is performed of the possibility of using oversized slow-wave structures in travelling-wave tubes for the sub-millimeter range of wavelengths. A linear theory is proposed for analyzing the properties of such slow-wave structures. Results are presented from a theoretical analysis of hot dispersion characteristics of … Webb14 dec. 2024 · In this paper, a W-band traveling-wave tube (TWT) is proposed by combining the slotted sine waveguide (SSWG) slow-wave structure (SWS) with the cylindrical electron beam. The dispersion properties and interaction impedances of the SSWG SWS are analyzed by using the numerical simulation and compared to the conventional sine … Webb28 sep. 2024 · However, the traditional TWT usually has disadvantages, such as large size and weight, high operation voltage and so on, which make it difficult to meet the require … buses coventry to nuneaton