Multi-Arrayed Micro-Patch Emitter with Integral Control Grid

摘要

A multi-arrayed electron emitter for microwave tubes in which the emitting surface is an array of continually replenished low-work-function regions, (micro-patches), whose boundaries include a control grid which is integral with the cathode surface and which controls emission from the low-work-function micro-patches. The continually replenished low-work-function regions are uniformly positioned relative to a matrix of uniformly spaced openings through which the low-work-function material is released. (Author)