Compact delay line formed of concentrically stacked, helically grooved, cylindrical channel-line structure
US5309125A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Sep 23, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P9/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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 concentric…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.