Convergent electron gun with bonded nonintercepting control grid

  title={Convergent electron gun with bonded nonintercepting control grid},
  author={G. V. Miram and E. N. Lien},
  journal={1978 International Electron Devices Meeting},
The bonded grid is a metal-insulator-metal sandwich attached directly to impregnated tungsten cathodes. The metallic top surface of the grid structure is the control grid, and the metallic surface on the bottom provides a diffusion barrier for barium between cathode and insulator. A bonded grid for use in microwave triodes was developed and described in a paper at IEDM in 1976. The present paper describes the extension of this work to convergent guns for linear beam microwave tubes. Low grid… CONTINUE READING