Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1994-01-21
1995-11-21
Lee, Benny T.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 551, 315 39, 333211, 333251, H01J 2340
Patent
active
054690242
ABSTRACT:
A leaky wall filter for use in an EIK comprises a plurality of guidelets intersecting perpendicularly with a wall of an output waveguide of the EIK. The guidelets would propagate 2.pi. mode oscillation frequencies from the EIK out of the output waveguide. A load matched to the 2.pi. mode disposed at the end of the guidelets provides termination for the 2.pi. mode oscillation frequencies and prevents the initiation of oscillation. The load comprises a plenum disposed at an end of the guidelets opposite to the output waveguide, a window having a first surface within the plenum, and a water load provided at a second surface of the window. The 2.pi. mode oscillation frequencies propagating through the guidelets are impedance matched by the window and coupled into the water load for termination. Since a portion of the operating frequency power also leaks through the guidelets into the plenum due to insertion loss, this combined RF power also couples into the water load and is converted into thermal energy. A fluid circulation system is provided to remove the thermal energy from the water load. The window is comprised of alumina ceramic which effectively couples the 2.pi. mode oscillation frequencies and RF power into the water load.
REFERENCES:
patent: 2970242 (1961-01-01), Jepsen
patent: 4284922 (1981-08-01), Perring et al.
patent: 4799031 (1989-01-01), Lang et al.
patent: 4931695 (1990-06-01), Symons
patent: 5187408 (1993-02-01), Jodicke et al.
"Build Absorptive All-Harmonic Waveguide Filters", by Richard Z. Gerlack, Microwaves & RF, Apr. 1993 (5 pages).
Kirshner Mark F.
Symons Robert S.
Lee Benny T.
Litton Systems Inc.
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