研究目的
Investigating the influence of uncorrected RF performance of the VNA on the transmission parameters of the DUT for the SOLT calibration scheme.
研究成果
The paper demonstrates both theoretically and experimentally the influence of VNA load mismatch on the transmission coefficients of a DUT measured after SOLT calibration. It concludes that uncorrected test port load mismatch must be considered in the uncertainty calculation of transmission parameters.
研究不足
The study is limited to the WR-10 waveguide band and focuses on the SOLT calibration scheme. The impact of uncorrected test port load mismatch on transmission parameters is highlighted, suggesting a need for reformulation in uncertainty calculations.
1：Experimental Design and Method Selection:
The study focuses on the SOLT calibration scheme's impact on transmission parameters, using theoretical models and experimental verification in the WR-10 waveguide band.
2：Sample Selection and Data Sources:
Measurements were made with a 3 dB and a 20 dB attenuator as well as with a λ/4 line section.
3：List of Experimental Equipment and Materials:
A Vector Network Analyzer (VNA), tuner, termination, a flush short, an offset short, and a 5 cm line section were used.
4：Experimental Procedures and Operational Workflow:
The VNA measured raw wave quantities, with calibration and evaluation performed using VNA Tools. TRL calibration results were used as a reference.
5：Data Analysis Methods:
The study compared measured transmission parameters with those constructed from TRL results, considering theoretical equations for verification.
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