Theoretical investigation of ways to elevate the output of a multibeam microwave K-band monotron generator based on a three-gap split cavity with a nonuniform field

摘要

A small-size low-voltage microwave multibeam monotron generator operating in the K frequency range is numerically simulated. The operation principle of this device is self-oscillation of electromagnetic waves through interaction of a multibeam electron flow with a nonuniform high-frequency pi-type electric field in a three-gap split cavity with different rf voltage amplitudes across the gaps. The results suggest the feasibility of emitting microwave radiation with a power of above 1 kW at a frequency of 18.56 GHz, an accelerating voltage of 2.7 kV, and a total efficiency of about 40%.