skrf.calibration.calibration.TwelveTerm¶
- class skrf.calibration.calibration.TwelveTerm(measured, ideals, n_thrus=None, trans_thres=- 40, *args, **kwargs)[source]¶
12-term, full two-port calibration.
TwelveTerm is the traditional, fully determined, two-port calibration originally developed in 1.
TwelveTerm can accept any number of reflect and transmissive standards, as well as arbitrary (non-flush) transmissive standards.
- If more than 3 reflect standards are provided, a least-squares
solution is implemented for the one-port stage of the calibration.
- If more than 1 transmissive standard is given the load match,
and transmission tracking terms are calculated multiple times and averaged.
References
- 1
“Calibration Process of Automatic Network Analyzer Systems” by Stig Rehnmark
Attributes
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
TwelveTerm initializer. |
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Apply correction to all touchstone files in a given directory. |
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Apply correction to list of dict of Networks. |
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Apply correction to a NetworkSet. |
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Embed an ideal response in the estimated error network[s] |
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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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Update current dict of error coefficients. |
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Write the Calibration to disk using |