Wave transmission lines and networks – Coupling networks – Delay lines including long line elements
Patent
1992-09-23
1994-05-03
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Delay lines including long line elements
333162, 333163, H01P 902
Patent
active
053091256
ABSTRACT:
A miniaturized cylindrical `channeline` delay line comprises a plurality of concentrically stacked cylindrical elements, surfaces of which are configured to form helically contoured `channeline` transmission line. The nested stack includes a first, generally cylindrical conductive spool body element, for example a lightweight and electrically conductive cylinder or spool, having a longitudinal axis and an outer, generally cylindrical surface in which a helical groove is formed. Concentrically surrounding this interior spool are one or more additional, generally cylindrical hollow electrically conductive hollow cylinders of successively increasing diameters. These additional electrically conductive hollow cylinders are sized, so that respective ones of the cylinders may be concentrically stacked about the longitudinal axis of the interior spool. Like the interior spool, each surrounding cylinder has a helical groove formed in its outer cylindrical surface. Snugly surrounding the outermost hollow cylinder is a conductive cylindrical cover for the structure, which has a generally cylindrical bore that is sized so as to accommodate the insertion of the interior spool and the concentrically stacked one or more cylindrical hollow cylinders into its bore. Respective lengths of insulator clad center conductor are wound within respective ones of the helical grooves in the interior spool and the cylinders, so as to be electrically insulated from the electrically conductive surfaces of respective ones of the helical grooves and the bores of adjacent body elements.
REFERENCES:
patent: 2810887 (1957-10-01), Ecklund et al.
patent: 3199054 (1965-08-01), Holland et al.
patent: 4641140 (1987-02-01), Hackaman et al.
patent: 4894628 (1990-01-01), Dadswell
Heckaman Douglas
Perkins Gilbert R.
Ham Seungsook
Harris Corporation
Wands Charles E.
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