Backscatter devices and systems providing backscattered signals including OFDM packets
US10652073B2 · kind B2 · utility
5Cited by
45References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Apr 4, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Examples described herein include backscatter devices which may transmit orthogonal frequency division multiplexing (OFDM) signals. Techniques for complex analog backscatter are described. Examples of impedance circuitry are described which may be used to provide real and imaginary components of impedance in accordance with inphase and quadrature bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.