Metamaterial antenna array with isolated antennas and ground skirt along the perimeter
US12009597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2022 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Dec 29, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0435
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna array that utilizes ground guard rings and metamaterial structures is disclosed. In certain embodiments, the antenna array is constructed from a plurality of antenna unit cells, wherein each antenna unit cell is identical. The antenna unit cell comprises a top surface, that contains a patch antenna and a ground guard ring. A reactive impedance surface (RIS) layer is disposed beneath the top surface and contains the metamaterial structures. The metamaterial structures are configured to present an inductance to the patch antennas, thereby allowing the patch antennas to be smaller than would otherwise be possible. In some embodiments, the metamaterial structures comprise hollow square frames. An antenna array constructed using this antenna unit cell has less coupling than conventional antenna arrays, which results in better performance. A ground skirt surrounds the perimeter of the antenna array to improve radiation phase pattern balance within the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.