Metamaterial antenna array with isolated antennas
US11611152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Jul 1, 2041 |
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. Furthermore, this new antenna array also requires less space than conventional antenna arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.