Method of producing coaxial cable
US4300338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Oct 11, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/203
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing leaky coaxial cables having an array of apertures in the conductive outer layer. The total area of the apertures is a predetermined fraction of the surface area of the cable. A pair of strip conductors of particular widths are selected and wound around the inner conductor and dielectric at predetermined pitch angles. This provides apertures having a total area which is a predetermined fraction of the surface area of the cable, a predetermined shape and being of a predetermined number per unit length. By varying the pitch angle during winding the distribution of apertures and hence the coupling of the cable can be varied. By testing short sections of cables of different geometry a coupling function and an attenuation function can be calculated to provide data for winding cables with desired characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.