skrf.calibration.calibration.EightTerm
- class skrf.calibration.calibration.EightTerm(measured, ideals, switch_terms=None, isolation=None, ut_hook=None, *args, **kwargs)[source]
General EightTerm (aka Error-box) Two-port calibration.
This is basically an extension of the one-port algorithm to two-port measurements, A least squares estimator is used to determine the error coefficients. No self-calibration takes place. The concept is presented in [1] , but implementation follows that of [2] .
See
__init__()
Notes
An important detail of implementing the error-box model is that the internal switch must be correctly accounted for. This is done through the measurement of switch terms.
References
Attributes
Intermediate matrices used for embedding and de-embedding. |
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Estimate of biased error for overdetermined calibration with multiple connections of each standard. |
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Return a NetworkSet for each caled_ntwk, grouped by their names. |
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List of the corrected calibration standards. |
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Dictionary or error coefficients in form of numpy arrays. |
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Dictionary of error coefficients for 12-term Model. |
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Dictionary or error coefficients in form of Network objects. |
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Dictionary of error coefficients for One-port Error model. |
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Dictionary of error coefficients in form of Network objects. |
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Dictionary of error coefficients for 8-term (Error-box) Model. |
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Dictionary of error coefficients in form of Network objects. |
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Dictionary of error coefficients in form of Network objects. |
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The calculated error Network or Network[s]. |
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Directivity normalized to the reflection tracking. |
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Number of ideal/measurement pairs in calibration. |
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Return any output from the |
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Returns a NetworkSet for each residual_ntwk, grouped by their names. |
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Dictionary of residual Networks. |
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Estimate of total error for overdetermined calibration with multiple connections of each standard.This is the combined effects of both biased and un-biased errors. |
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Estimate of unbiased error for overdetermined calibration with multiple connections of each standard. |
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Methods
EightTerm Initializer. |
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Applies the calibration to the input network. |
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Apply correction to all touchstone files in a given directory. |
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Apply correction to list or dict of Networks. |
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Apply correction to a NetworkSet. |
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Applies the error boxes to the calibrated input network. |
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Create a calibration from its error coefficients. |
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Create a calibration from its error coefficients. |
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Plot corrected calibration standards. |
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Plot biased, unbiased and total error in dB scaled. |
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Plot residual networks. |
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Remove and return tuple of (ideal, measured) at index. |
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Remove a cal standard and correct it, returning correct and ideal. |
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Renormalizes the calibration error boxes to a new reference impedance. |
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Run the calibration algorithm. |
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Terminate a network with switch terms. |
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Unterminates switch terms from a raw measurement. |
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Update current dict of error coefficients. |
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Write the Calibration to disk using |