Title :
Design of wideband helix TWT
Author :
Sun-Shin Jung ; Soukhov, A.V. ; Gun-Sik Park
Author_Institution :
Vacuum Electrophys. Lab., Seoul Nat. Univ., South Korea
Abstract :
The wideband helix traveling-wave tube (TWT) using an electron beam of voltage 4 kV and current 140 mA is designed over the frequency range of 6-18 GHz by a nonlinear theory employing one-dimensional particle-in-cell (PIC) method. The nonlinear theory involves a large particle beam model in which the electron beam is treated as the electron disk instead of the hydrodynamic fluid in the linear theory for the numerical calculations. A linear theory is used to verify the numerical algorithm of the nonlinear theory in a small-signal mode.
Keywords :
microwave tubes; modelling; numerical analysis; travelling wave tubes; 140 mA; 4 kV; 50 W; 6 to 18 GHz; electron beam; electron disk; helix traveling-wave tube; large particle beam model; nonlinear theory; numerical calculations; one-dimensional particle-in-cell method; small-signal mode; wideband helix TWT; Electron beams; Electron tubes; Frequency estimation; Gain; Particle beams; Physics; Power generation; Power system harmonics; Voltage; Wideband;
Conference_Titel :
Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6513-5
DOI :
10.1109/ICIMW.2000.893036
