Traveling wave tube with gain flattening slow wave structure

Details Traveling wave tube with gain flattening slow wave structure Traveling wave tube with gain flattening slow wave structure

1990-08-06

1992-11-10

Laroche, Eugene R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 393, H01J 2534

Patent

active

051626977

ABSTRACT:
A traveling wave tube (10) includes a coupled cavity type slow wave structure (100) having a driver stage (52) and an output section (101) with a primary section (64) and a velocity taper section (82) which in combinattion produce maximum signal gain at a predetermined frequency. A gain flattening section (104) is preferably disposed between the driver stage (52) and the primary section (64) of the output section (101), and is designed to operate at a reduced phase velocity selected to produce minimum or negative signal gain at approximately the predetermined frequency. The gain characteristics of the driver stage (52), gain flattening section (104), primary section (64), and velocity taper section (82) combine to produce minimum signal gain variation over an operating frequency range which spans the predetermined frequency, and expand the bandwidth of the traveling wave tube (10).

REFERENCES:
patent: 3324342 (1967-06-01), Eallonardo
patent: 3349278 (1967-10-01), Huse, Jr.
patent: 3440555 (1969-04-01), Woklstein
patent: 3538377 (1970-11-01), Slocum
patent: 3716745 (1973-02-01), Phillips
patent: 4147956 (1979-04-01), Horigome et al.
patent: 4292567 (1981-09-01), Fritchle et al.
patent: 4315194 (1982-02-01), Connolly
patent: 4358704 (1982-11-01), Conquest
patent: 4564787 (1986-01-01), Kosmahl

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