Dual band hybrid solid/dichroic antenna reflector
US6140978A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/17
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A spaceborne hybrid antenna reflector for dual frequency band illumination of common spot beam coverage regions contains an interior solid reflector region, that is adjacent at its perimeter to a ring-shaped exterior dichroic reflector region and adjoined by a common backing structure. The solid interior region is reflective to RF energy at each of first and second spaced apart frequency bands, while the exterior dichroic reflector region is reflective at the first frequency band, but non-reflective at the second frequency band. This allows the hybrid reflector to realize the same beamwidth coverage for a transmitter operating at one frequency band and a receiver operating at the other frequency band. The backing support frame at the rear side of the reflector is electrically decoupled from the exterior dichroic ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.