Design of a sheet-beam electron gun for a Ka-band microfabricated traveling-wave tube

Author

Shaomeng Wang ; Chen Zhao ; Aditya, Sheel

Author_Institution

Satellite Res. Center, Nanyang Technol. Univ., Singapore, Singapore

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

2

Abstract

A novel design of a sheet beam electron gun, suitable for a Ka-band microfabricated traveling-wave tube (TWT), is described in this paper. Simulations take into account emission from a CNT field-emitter array (FEA) and the formation of the sheet beam. The rectangular FEA cathode of 2250×300 μm² area produces a 10 mA sheet electron beam which is compressed into a 350×150 μm² area. The configuration of the focusing electrodes and the anode is suitable for microfabrication. For an anode voltage of 3.7 KV, the presented simulation results show a uniform beam at the anode output.

Keywords

anodes; cathodes; electron beams; electron guns; field emitter arrays; microfabrication; travelling wave tubes; CNT field-emitter array; Ka-band microfabricated traveling-wave tube; anode; current 10 mA; electron beam; focusing electrodes; microfabrication; rectangular FEA cathode; sheet-beam electron gun; voltage 3.7 kV; Anodes; Cathodes; Electron tubes; RNA; electron gun; micro-fabrication; sheet electron beam; travelling-wave tube;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2015 IEEE International

Conference_Location

Beijing

Print_ISBN

978-1-4799-7109-1

Type

conf

DOI

10.1109/IVEC.2015.7223757

Filename

7223757