Title :
Effect of Passive Modes in Traveling-Wave Tubes
Author_Institution :
Bell Telephone Laboratories, Inc., New York 14, N.Y.
Abstract :
As the beam current in a traveling-wave tube is increased, the local fields due to the bunched beam become appreciable compared with the fields propagating along the circuit. The effect is to reduce gain, to increase the electron speed for optimum gain, to introduce a lower limit to the range of electron speeds for which gain is obtained, and to change the initial loss.
Keywords :
Boundary conditions; Circuit analysis; Conductors; Electron beams; Electron tubes; Frequency; Maxwell equations; Motion analysis; Telephony; Voltage;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1948.231946
