Cross-polarization antenna filter
US11264728B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2019 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Oct 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed are devices and methods for selecting, at an antenna reflector, electromagnetic waves with a certain polarization and frequency and rejecting electromagnetic waves with different polarizations and/or frequencies. In one aspect, a directional antenna includes a shaped reflector surface with a series of conforming layers attached to the surface. The layers include a reflecting layer that causes reflection of electromagnetic waves at a specific frequency and polarization. Underneath the reflecting layer is a frequency selective surface (FSS) layer that absorbs electromagnetic waves not at the specific frequency or polarization which pass through the reflecting layer. Underneath the absorbing layer is a conductive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.