研究目的
To measure the dielectric constant (Dk) and loss tangent (Df) of materials at a frequency of 22 GHz using a metamaterial complementary split-ring resonator (CSRR).
研究成果
The CSRR sensor was successfully used to measure the dielectric constant and loss tangent at 22 GHz. The measured results were in close agreement with the declared values specified in the datasheets of the sample materials, demonstrating the method's effectiveness for non-destructive characterization of dielectric properties at high frequencies.
研究不足
The method's accuracy depends on the quality of the curve fitting and the assumption that the perturbation is small and the field amplitude is unchanged. Additionally, the method may not be suitable for materials not appropriate for high frequencies, as seen with Hitachi FR-4.
1：Experimental Design and Method Selection:
The CSRR was designed to resonate at 22 GHz and used as a sensor to measure the dielectric properties of materials. The method involves calculating the permittivity based on the oscillation frequency changes of the CSRR caused by the material under test (MUT).
2：Sample Selection and Data Sources:
Material samples from Hitachi FR-4, Rogers RT/duroid? 5870, and Rogers RT/duroid? 3035 were used.
3：List of Experimental Equipment and Materials:
A vector network analyzer (VNA) Anritsu MS4644B was used for measurements. The substrate used in the design of the CSRR was a Rogers RT/duroid
4：Experimental Procedures and Operational Workflow:
58 The CSRR sensor was loaded with the MUT, and the change in the resonance frequency and the magnitude of S21 at the resonance frequency were observed.
5：Data Analysis Methods:
The dielectric constant and loss tangent were calculated using polynomial expressions obtained by curve-fitting technique with the simulation results.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
