Optimally designed traveling wave tube for operation backed off

Details Optimally designed traveling wave tube for operation backed off Optimally designed traveling wave tube for operation backed off

1997-06-05

1999-08-03

Lee, Benny T.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 535, H01J 2534, H01J 23087

Patent

active

059329718

ABSTRACT:
A traveling wave tube and method of operation is disclosed. The traveling wave tube includes a slow wave structure such as a helix member provided with input and output ends and located within a tube member. An electron gun assembly is adjacent the input end for injecting electrons as an electron beam along an axial path through the helix member. A magnetic focusing device generates a magnetic field having a given strength to confine the beam to the axial path. The given strength of the magnetic field is sufficient to confine the beam only when the power level of the microwave input signal is selected such that the given power level of the microwave output signal is at least 6 dB lower than the power level of the microwave output signal at saturation. Boron Nitride (BN) supporting rods are engaged between the tube and helix members for supporting and transferring heat away from the helix member.

REFERENCES:
patent: 3433999 (1969-03-01), Espinosa
patent: 3684913 (1972-08-01), James et al.
patent: 3825794 (1974-07-01), Butwell
patent: 5274304 (1993-12-01), Nishida

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