研究目的
Developing a reference inductance standard using air dielectric coaxial transmission lines for high-frequency applications and verifying an inductance measurement method using group delay.
研究成果
A reference inductance standard using an air line usable at high frequencies (over 100 MHz) was described, and an inductance measurement method using group delay was verified. Future work includes evaluating measurement uncertainties and studying a substitution method for inductance measurement in the high frequency range.
研究不足
The study mentions the need for further analysis and uncertainty estimations. The disturbance in measurement results at 0.3–0.4 GHz due to VNA properties indicates a limitation in the current setup.
1：Experimental Design and Method Selection:
The study focuses on using air dielectric coaxial transmission lines as a reference inductance standard and employs group delay measurement for inductance verification.
2：Sample Selection and Data Sources:
A 50 nH reference inductance standard was developed for verification.
3：List of Experimental Equipment and Materials:
Vector Network Analyzer (VNA, model: Keysight Technologies E5071C), adaptor of type-N50 connector to PC7 connector, and a flush short for termination.
4：Experimental Procedures and Operational Workflow:
The VNA was calibrated before the verification measurement. The group delay measurement was conducted to verify the inductance of the reference standard.
5：Data Analysis Methods:
The inductance was calculated from the group delay measurement results using the provided equations.
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