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Verification of Multiline TRL Calibration

A technique for assessing the validity of multiline TRL calibration. The main goal of this method is to identify error in the reference impedance of the calibration. You can find in-depth details about the method in [1]. The mTRL algorithm used is based on [2,3], which you can access here: https://github.com/ZiadHatab/multiline-trl-calibration. The uncertainty propagation through the calibration is from here: https://github.com/ZiadHatab/uncertainty-multiline-trl-calibration.

What’s in this repository

The files in this repo includes everything I used to generate the plots in [1]. The measurement are raw wave parameters, which then converted to S-parameters from the VNA. You SCPI code used to collect the data is from here: https://github.com/ZiadHatab/scpi-anritsu-vectorstar

reflection coefficient Extracted reflection coefficient of the impedance transformation and validation bounds.

impedance error Estimated error in the reference impedance of the stepped impedance (30 ohm) and the uncertainty contribution.

References

[1] Z. Hatab, M. E. Gadringer, A. B. Alothman Alterkawi, and W. Bösch, "Validation of the Reference Impedance in Multiline Calibration with Stepped Impedance Standards," in IEEE Open Journal of Instrumentation and Measurement, vol. 2, pp. 1-12, 2023, doi: 10.1109/OJIM.2023.3315349.

[2] Z. Hatab, M. Gadringer and W. Bösch, "Improving The Reliability of The Multiline TRL Calibration Algorithm," 2022 98th ARFTG Microwave Measurement Conference (ARFTG), 2022, pp. 1-5, doi: 10.1109/ARFTG52954.2022.9844064

[3] Z. Hatab, M. E. Gadringer, and W. Bösch, "Propagation of Linear Uncertainties through Multiline Thru-Reflect-Line Calibration," in IEEE Transactions on Instrumentation and Measurement, vol. 72, pp. 1-9, 2023, doi: 10.1109/TIM.2023.3296123.

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A verification method for multiline trl calibration

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