Abstract
This article is devoted to the study of beam-wave interaction behavior of a double gap electromagnetic band-gap resonator for a cluster miniature multi-beam klystron (MMBK) with 114 beams operating at 12 GHz of a higher order 2π mode. We propose to use a fractality as a basic concept for modeling, analysis, and design for a new spatially developed quasi-fractal resonators with six sub-group of beam-clusters. The tree-like fractal double-gap resonator contains electromagnetic band gap “traps” for parasitic types of oscillations in the form of clusters of metal and ceramic rods, which allow us to suppress higher parasitic types of oscillations. The results of calculations show the possibility of development a super-multi-beam miniature klystron with an output power of 7 kW when the overall efficiency is 30%.
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