Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1988-06-03
1989-07-25
Gensler, Paul
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
333 21R, 333162, 333 33, H01J 2534, H01P 508
Patent
active
048517364
ABSTRACT:
Slow-wave structures are formed by the method of this invention in the form of helical or coupled-cavity structures. A helical waveguide form of slow-wave structure is formed of a solid rod of copper machined with a deep, narrow helical groove. A copper sleeve is brazed to the periphery of the resulting helical thread to form a helically spiraling pathway about a solid axially centered and axially extending center portion. The center portion is then totally eroded away to form a slow wave structure having a helical radially-extending portion, or if only partially eroded with an inner helical axially-extending ridge to provide a helical axially-centered gap between adjacent ridges. The helix is extended into a rectangular waveguide for coupling the slow-wave structure to the source and to the load. The coupled-cavity forms of waveguide slow-wave structures are formed by machining disks from a solid rod of copper. The disks are supported in their desired positions by an axial retained portion of the rod until the disks are brazed inside a cylindrical shell of copper. After brazing, the axial retained portion is removed in whole or part to form the completed slow-wave structure.
REFERENCES:
patent: 2760112 (1956-08-01), Clarke
patent: 2761915 (1956-09-01), Pierce
patent: 2806975 (1957-09-01), Johnson
Harper Robert
Liss Cheryl V.
Gensler Paul
Raytheon Company
Santa Martin M.
Sharkansky Richard M.
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