| Abstract: | after briefing the major progress in the field of vacuum microelectronics (such as field emission array,field emission displays,microwave and millimeter-wave devices etc. ),this paper deals mainly with possibilities,problems and the practical significance in the development of the vacuum microelectronic microwave tubes. Three major features of FEA(i. e. cold cathode,high emission ability and self gate control)make it possible to develop a new generation of efficiency, higher output power,long life and miniaturization. Mentioned also in the paper are some research topics in developing VMEMT,such as the dual-gated FEA,beam forming and preservation,interaction circuits,special structure of the device and*its components and the corresponding tube pro cessing technics. |
