The Study of Output Stage of Miniature Multibeam Klystron with Associated Dual-Frequency Cavities

The paper presents the results of a three-dimensional electromagnetic modeling of two connected through the gap coupling stepwise-inhomogeneous output cavities, operating at double frequencies (f₀ and 2f₀). The main electrodinamical and electronic parameters of various modes are investigated (characteristic wave impedance ρ=R/Q, coupling coefficient M, relative active electron conductance G_e/G₀, quality Q and accelerating potential U₀ = 3 kV). The possibility of further enhancing the complex of energy and mass-dimensional parameters of low voltage miniature multi-beam Ku-band klystrons is shown.