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Method and apparatus for linear characterization of multi-terminal single-ended or balanced devices

  • US 6,653,848 B2
  • Filed: 09/18/2001
  • Issued: 11/25/2003
  • Est. Priority Date: 09/18/2000
  • Status: Active Grant
First Claim
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1. A method of characterizing a DUT, comprising the steps of:

  • calibrating a multiport test set;

    coupling each terminal of the DUT to a respective port of the multiport test set;

    measuring S-parameters [S] of the DUT with the multiport test set;

    determining elements of a scalar orthogonal matrix [M] corresponding to terminals of the DUT and DUT modes of operation wherein said scalar orthogonal matrix [M] comprises matrix elements representing at least one single-ended terminal of the DUT and matrix elements representing at least one balanced terminal of the DUT; and

    transforming the S-parameters of the DUT into mixed-mode S-parameters [Smm] according to a transformation Smm=MSM

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