Phase and amplitude detection in wireless energy transfer systems

  • US 9,929,721 B2
  • Filed: 10/12/2016
  • Issued: 03/27/2018
  • Est. Priority Date: 10/14/2015
  • Status: Active Grant
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First Claim
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1. An electronic device comprising:

  • a first finite impulse response (FIR) filter that receives an input signal and a first reference signal, wherein the first FIR filter filters the first reference signal to generate a first sinusoidal signal and mixes the first sinusoidal signal and the input signal to generate a first mixed signal;

    a second FIR filter that receives the input signal and a second reference signal, wherein the second FIR filter filters the second reference signal to generate a second sinusoidal signal and mixes the second sinusoidal signal and the input signal to generate a second mixed signal; and

    a controller coupled with the first FIR filter and the second FIR filter, the controller configured to determine a characteristic of the input signal based on the first mixed signal and the second mixed signal.

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