MULTIPLE-BEAM KLYSTRON Russian patent published in 1996 - IPC

FIELD: microwave electronics. SUBSTANCE: multiple-beam klystron has cathode-grid assembly incorporating electron source and control electrode with holes, magnetic system, cavity unit with cavities and channels coaxial with holes in control electrode, and pole shoes of magnetic system, collector accommodating in its input bore flat disk 14 with holes 15 coaxial with mentioned bore. Flat disk is T=KD[(1-η)^3/4/R1/2μ

], thick, where D is diameter of its hole 15, P_μ is electron beam microperveance, h is electron efficiency, K= 1.2-1.5 mkA^1/2/B^3/4. Most retarded electrons on inner surface of channels (holes) are removed due to selection on inner surface of channels (holes) in flat disk with the result that potential dip inside channels and in common collector space is reduced and reflection of electron flow from collector becomes less intensive. EFFECT: provision for suppressing or appreciably reducing parasitic self-excitation of device caused by electron-flow feedback. 2 cl, 2 dwg