Cavity resonance absorption in ultra-high bandwidth CRT deflection structure
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.
- Research Organization:
- EG and G Energy Measurements, Inc., Las Vegas, NV (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC08-88NV10617
- Assignee:
- Dept. of Energy
- Patent Number(s):
- PATENTS-US-A7700286
- Application Number:
- ON: DE93012002
- OSTI ID:
- 10146237
- Resource Relation:
- Other Information: PBD: 15 May 1991
- Country of Publication:
- United States
- Language:
- English
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