ELECTROVACUUM SHF-DEVICE OF HYBRID TYPE, ISTRON Russian patent published in 2014 - IPC H01J25/02 

FIELD: electricity.

SUBSTANCE: electrovacuum SHF-device of hybrid type contains a cathode made as the assembly of individual emitting surfaces that form separate electron beams, a control grid made as the assembly of individual control grids, each of them is placed coaxially to the respective emitting surface and all these grids are fixed at the same metal mesh holder, a single-gap input resonator, an anode, drift tubes containing the assembly of individual transient channels parallel to the device longitudinal axis intended for passing individual electron beams, at that each channel corresponds to the respective emitting surface and a control grid, a collector, a single-gap output active resonator and external output passive resonator united into the system of coupled resonators. The coupling between the output active resonator and external output passive resonator is made by means of a device that represents an open loop placed in the cavity of the active resonator and connected to a cylindrical bushing placed in the capacity of the passive resonator so that its end plane is parallel to the end plane of the matching bushing placed at the narrow wall of the passive resonator. The open loop end is connected to a plate shaped as a circular segment, in the middle point of its length, so that the plate plane is parallel to the narrow wall of the active resonator, at that sizes of the plate are selected in order to ensure resonant frequency value for the loop per 10% lower than the upper limit of the device operating range.

EFFECT: improvement of electric strength and efficiency factor at high output power in the multybeam electrovacuum device of hybrid type intended for operation in the whole UHF frequency band.

2 cl, 4 dwg, 1 tbl