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

Patent ·
OSTI ID:868783
 [1];  [2]
  1. Santa Cruz, NM
  2. Santa Barbara, CA
+ Show Author Affiliations
An improved ultra-high bandwidth helical coil deflection structure for a hode 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.
Research Organization:
EG & G ENERGY MEASUREMENTS INC
DOE Contract Number:
AC08-88NV10617
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Number(s):
US 5210464
OSTI ID:
868783
Country of Publication:
United States
Language:
English

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Related Subjects

/315/313/333/
absorption
bandwidth
bore
bore therein
carbon
carbon film
cavity
cavity resonance
characteristic
characteristic impedance
coaxial
coaxially
coaxially mounted
coil
coil deflection
comprises
comprising
connected
crt
deflection
deflection coil
deflection structure
described
described comprising
disposed
electrically
electrically connected
equal
film
form
formed
forming
ground
ground plane
ground planes
helical
helical coil
hode
impedance
improved
improved ultra-high
inhibit
line
line formed
load
metal
metal wall
metal walls
mounted
operation
plane
planes
plug
preferably
ray
ray tube
resistive
resistive load
resonance
structure
substantially
substantially equal
surface
therein
tube
ultra-high
ultra-high bandwidth
walls