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Performance and versatility of single-frequency DFT detectors

  • US 10,180,485 B2
  • Filed: 09/05/2015
  • Issued: 01/15/2019
  • Est. Priority Date: 09/05/2014
  • Status: Active Grant
First Claim
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1. A method of improving a signal measurement by a Digital Fourier Transform (DFT) Detector, comprising:

  • providing a DFT in combination with a test vector generator to form the DFT detector, wherein the test vector generator supplies discontinuous test vectors to the DFT at a plurality of selected frequencies and having a number of samples;

    calculating in-phase gains, quadrature gains and crosstalk factors based on each of the selected frequencies and the number of samples of the discontinuous test vectors;

    inputting a measurement signal into the DFT detector and receiving output values from the DFT detector wherein the output values include artifacts; and

    removing the artifacts from the output values, by determining a corrected output using the output values, the in-phase gains, the quadrature gains and the crosstalk factors according to expression 3.

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