Automatic polarization decoupling network
US4233576A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 1978 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | May 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An automatic polarization decoupling circuit for decoupling first and second signals originally transmitted with orthogonal polarizations comprising a rotatable quarter-wave plate and a rotatable half-wave plate for linearizing the first signal and rotating its polarization direction to a reference polarization direction, an Orthomode (trademark) transducer for separating energy in the reference polarization direction from energy with a polarization in quadrature thereto and utilizing this quadrature energy as the decoupled second signal. The system further comprises a second Orthomode transducer for recombining the in-phase and quadrature energy separated by the first Orthomode transducer and applying this recombined energy to a second rotatable quarter-wave plate and a second rotatable half-wave plate for linearizing the second signal and rotating its polarization direction to a direction in quadrature with the reference polarization direction. A third Orthomode transducer is provided to separate the energy in this quadrature reference polarization direction from the energy polarized in the reference direction. The reference direction energy separated by this third Orthomode tran…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.