Liquid-crystal tunable metasurface for beam steering antennas
US10720712B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2017 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | May 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/004
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electronically tunable metasurface whose reflective phase can be electronically reconfigured to allow effective antenna beam steering. First and second double sided substrates define an intermediate region between them containing liquid crystal in a nematic phase. A first microstrip patch array of the first substrate and a second microstrip patch array of the second substrate are aligned to form a two dimensional array of cells, Each cell comprises a microstrip patch of the first microstrip patch array arranged in spaced apart opposition to a microstrip patch of the second microstrip patch array with a volume of the liquid crystal located therebetween. Each control terminal to the microstrip patch of the second array permits a control voltage to be applied to the cell to control a dielectric value of the volume of the liquid crystal, thereby permitting a reflection phase of the cell to be selectively tuned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.