Circularly polarized antennas
US10505279B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Jun 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/0086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna includes a dielectric substrate, a circular patch overlying the dielectric substrate, and a metamaterial ground plane. One or more antenna feeds are coupled to the circular patch. The antenna feeds may include impedance transformers. The metamaterial ground plane includes a plurality of conductive patches and a ground plane. The conductive patches are arranged along a first plane below the circular patch and are separated from the circular patch by at least the dielectric substrate. The conductive patches are arranged in a pattern that provides circular symmetry with respect to a center of the circularly polarized antenna. The ground plane is arranged along a second plane and is electrically coupled to at least a first portion of the conductive patches. One or more of the conductive patches and the ground plane are coupled to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.