Reading of an electromagnetic resonant structure by a separated transmitter and receiver
US11443124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Nov 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10009
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A resonant structure includes a conductive surface layer on a dielectric layer that produces an enhanced or reduced backscattered radiation in one or more resonant frequency bands when illuminated with electromagnetic energy. A transmitter illuminates the resonant structure with the electromagnetic energy at a first angle relative to the normal of the conductive surface. A receiver is operable to detect the enhanced or reduced backscattered radiation at the resonant frequency bands at a second angle relative to the normal of the conductive surface. The second angle is different from the first angle by at least five degrees. A processor coupled to the receiver and is operable to detect data encoded in one or both of a frequency response and a polarization response of the resonant structure based on the detected enhanced or reduced backscattered radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.