Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 14, 2021
Patent Application Number
16969785
Date Filed
February 14, 2018
Patent Citations Received
Patent Primary Examiner
Patent abstract
A technique for transmitting data from a passive radio device (100) is described. As to a method aspect of the technique, an antenna (102) of the passive radio device (100) is exposed to an incident radio signal (502). A frequency domain representation of the incident radio signal (502) comprised at least one muted gap between active subcarriers within a bandwidth of the incident radio signal (502). The incident radio signal (502) is backscattered from the antenna by modulating an impedance of the antenna according to the data using at least two different modulation frequencies that differ by less than the bandwidth.
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