Patent · US Active

Switching frequency methods and apparatus for ambient backscatter networking and jamming

US10763990B1 · kind B1 · utility

3Cited by
1References
3Claims
0Family size

Inventors

Key dates

Filing dateMar 28, 2019
Grant dateSep 1, 2020
Priority date—
Expiry dateMar 28, 2039

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04L5/14
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

Two ambient backscatter modulation methods and embodiments are disclosed, pseudo FSK and shifted BPSK. Embodiments of a receiver of signals for those modulations are also disclosed. Both methods disclosed allow for frequency-based networking of multiple backscatter devices when signals from an ambient, modulated radio frequency (RF) source are used for illumination. Disclosed method and apparatus exploit the inherent variation of the ambient modulated illuminating signal and offers performance improvement. Aspects of the disclosed invention also provide methods for passive jamming of full duplex transceivers and methods for assisting RF source localization.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.