Multimode coupling system including a funnel-shaped multimode coupler
US4030048A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Jul 6, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multimode coupling system for coupling symmetrical waveguide mode signals and two or more tracking asymmetrical waveguide mode signals includes a funnel-shaped coupler with a plurality of coupling apertures located in the side wall thereof. A first four of these side wall apertures lie in a first common plane at a given distance from the small aperture end of the coupler. A second four of these apertures lie in a second common plane a second given distance from the small aperture end of the coupler. A first coupling circuit is provided between the first group of side wall apertures and an asymmetrical mode terminal, and a second coupling circuit is provided between the second four apertures in the second plane and a second asymmetrical mode terminal. Each coupling circuit includes a separate filter for each aperture, with the filters coupled to the first four side wall apertures adapted to pass signals at a first frequency band and with the filters coupled to the second four side wall apertures adapted to pass signals at a second frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.