Rotatable polarization duplexer
US4222017A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | May 9, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/165
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The cavity of a rotatable cylindrical waveguide supports the TE.sub.11 mode of propagation of a received wave and a transmitted wave. The proximal and distal ends of the cylindrical waveguide are adjacent and axially aligned with one end of a rectangular flexible waveguide and a fixedly disposed horn aperture, respectively. The transmitted wave propagates in the TE.sub.10 mode through the rectangular waveguide to the cylindrical waveguide. Additionally, the rectangular waveguide prevents propagation therethrough of the received wave. The cylindrical waveguide couples the transmitted wave to the horn. Rotation of the end of the rectangular waveguide rotates the polarization of the transmitted wave. A pair of slots in the cylindrical waveguide form passageways between the cavity thereof and a pair of filters that pass the received wave whereby the received wave propagates through the filters. Rotation of the cylindrical waveguide rotates the polarization of the received wave within the filters relative to the polarization of the received wave within the cylindrical waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.