Structure for a dichroic antenna
US4701765A · kind A · utility
21Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1985 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Oct 24, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This structure for a dichroic antenna can be used in a reflector antenna capable of operating at the same time at two different frequencies or with two orthogonal polarizations, and presents mechanical characteristics allowing its use on board the satellites. The structure, suitable for a subreflector, comprises a plurality of layers with high mechanical stiffness in the external part, followed by layers with low dielectric constant and one or a plurality of metallic grids in the most internal part, separated by low-dielectric constant layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.