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Title: Cavity resonance absorption in ultra-high bandwidth CRT deflection structure by a resistive load

Abstract

An improved ultra-high bandwidth helical coil deflection structure for a cathode ray tube is described comprising a first metal member having a bore therein, the metal walls of which form a first ground plane; a second metal member coaxially mounted in the bore of the first metal member and forming a second ground plane; a helical deflection coil coaxially mounted within the bore between the two ground planes; and a resistive load disposed in one end of the bore and electrically connected to the first and second ground planes, the resistive load having an impedance substantially equal to the characteristic impedance of the coaxial line formed by the two coaxial ground planes to inhibit cavity resonance in the structure within the ultra-high bandwidth of operation. Preferably, the resistive load comprises a carbon film on a surface of an end plug in one end of the bore.

Inventors:
;
Publication Date:
OSTI Identifier:
6291115
Patent Number(s):
US 5210464; A
Application Number:
PPN: US 7-700286
Assignee:
Dept. of Energy, Washington, DC (United States) IMS; EDB-93-122234
DOE Contract Number:  
AC08-88NV10617
Resource Type:
Patent
Resource Relation:
Patent File Date: 15 May 1991
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CATHODE RAY TUBES; DESIGN; CARBON; DISPLAY DEVICES; ELECTRIC COILS; ELECTRIC IMPEDANCE; HELICAL CONFIGURATION; IMAGE TUBES; OSCILLOGRAPHS; RESISTORS; THIN FILMS; COMPUTER OUTPUT DEVICES; COMPUTER-GRAPHICS DEVICES; CONFIGURATION; ELECTRICAL EQUIPMENT; ELECTRON TUBES; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; FILMS; IMPEDANCE; NONMETALS; 426000* - Engineering- Components, Electron Devices & Circuits- (1990-)

Citation Formats

Dunham, M.E., and Hudson, C.L. Cavity resonance absorption in ultra-high bandwidth CRT deflection structure by a resistive load. United States: N. p., 1993. Web.
Dunham, M.E., & Hudson, C.L. Cavity resonance absorption in ultra-high bandwidth CRT deflection structure by a resistive load. United States.
Dunham, M.E., and Hudson, C.L. Tue . "Cavity resonance absorption in ultra-high bandwidth CRT deflection structure by a resistive load". United States.
@article{osti_6291115,
title = {Cavity resonance absorption in ultra-high bandwidth CRT deflection structure by a resistive load},
author = {Dunham, M.E. and Hudson, C.L.},
abstractNote = {An improved ultra-high bandwidth helical coil deflection structure for a cathode ray tube is described comprising a first metal member having a bore therein, the metal walls of which form a first ground plane; a second metal member coaxially mounted in the bore of the first metal member and forming a second ground plane; a helical deflection coil coaxially mounted within the bore between the two ground planes; and a resistive load disposed in one end of the bore and electrically connected to the first and second ground planes, the resistive load having an impedance substantially equal to the characteristic impedance of the coaxial line formed by the two coaxial ground planes to inhibit cavity resonance in the structure within the ultra-high bandwidth of operation. Preferably, the resistive load comprises a carbon film on a surface of an end plug in one end of the bore.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {5}
}