Apparatus and methods for launching and screening electromagnetic waves in the dipole mode
US4114121A · kind A · utility
135Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1976 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Dec 30, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A screen for a dipole-mode waveguide is described. The screen is in the form of a metal cylinder, with or without longitudinal gaps, and this screen is useful with the type of dipole-mode waveguide formed by a generally cylindrical structure of elongated parallel spaced apart conductors. External radial vanes and an internal diametric vane for the structure are also described for suppressing unwanted modes at the launching point, as is a slot launching arrangement for launching the dipole mode without exciting unwanted modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.