Patent ID: 9680520
Date: 2017-06-13
CPC Classifications: H04B

Claim:
1. A system comprising: an ambient backscatter transceiver comprising: an antenna configured to receive a backscattered ambient radio frequency (RF) signal; a demodulator coupled to the antenna, the demodulator comprising an averaging circuit configured to reduce variations in the backscattered ambient RF signal, wherein the demodulator is configured to demodulate the backscattered ambient RF signal in part using the averaging circuit to retrieve first data, wherein the backscattered ambient RF signal is generated by backscattering an ambient RF signal at a first frequency, the ambient RF signal configured to provide second data at a second frequency; and a transmitter configured to modulate an impedance of the antenna at the first frequency to provide a second backscattered ambient RF signal encoded with another data for transmission to a second ambient backscatter transceiver.