研究目的
To verify the frequency variability of the BCD resonator method for broadband permittivity measurements at almost arbitrary frequency points.
研究成果
The frequency variability of the BCD resonator method was experimentally verified by confirming the consistency of measurement results obtained using five circular disks with different radii. This method enables broadband permittivity measurements at almost arbitrary frequency points with a single resonator and expendable parts.
研究不足
The study focused on low-loss materials and did not explore high-loss materials. The frequency range was limited to up to 70 GHz.
1：Experimental Design and Method Selection:
The BCD resonator method was used for permittivity measurements by changing the size of the circular disk.
2：Sample Selection and Data Sources:
Cyclic ole?n polymer (COP) samples with a thickness of
3：254 mm were measured. List of Experimental Equipment and Materials:
Five circular disks with radii R =
4：5, 6, 5, 9, and 5 mm, and a Keysight vector network analyzer (VNA) N5227A. Experimental Procedures and Operational Workflow:
The resonant frequencies and Q-factors of TM0m0 modes were measured for each circular disk.
5：Data Analysis Methods:
The relative permittivity and loss tangent were derived from the measured resonant frequencies and Q-factors.
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