Noncontact measurement of complex permittivity based on the principle of mid-range wireless power transfer
Noncontact measurement of complex permittivity based on the principle of mid-range wireless power transfer
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DOI：
10.1109/tmtt.2014.2302739
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发表时间：
2014-01
影响因子：
4.3
通讯作者：
Fazhong Shen;Y. Salamin;Jing Dong;Yongzhi Sun;J. Huangfu;Changzhi Li;L. Ran
中科院分区：
文献类型：
--
作者：
Fazhong Shen;Y. Salamin;Jing Dong;Yongzhi Sun;J. Huangfu;Changzhi Li;L. Ran
材料复介电常数的测量在科学研究和工业应用中具有重要意义。在本文中，我们介绍了强耦合磁共振以前用于高效率的中程无线电能传输的非接触测量材料的复介电常数。理论分析、全波仿真和实验测量表明，引入高Q值谐振可以有效地提高测量灵敏度和与仪器的阻抗匹配，避免了传统磁感应方法的主要缺点。测量装置可以很容易地校准固体和液体材料，并可以提供灵活的非接触式测量在可变距离。我们期望从这种新颖的方法中出现广泛的应用。
The measurement of complex permittivity of materials is of significant importance in scientific research and industrial applications. In this paper, we introduce the strongly coupled magnetic resonance previously used in high-efficiency midrange wireless power transfer to the noncontact measurement of the complex permittivity of materials. Theoretical analysis, full-wave simulation, and experimental measurements will show that the introduced high- Q-factor resonance can be used to effectively improve both the measurement sensitivity and the impedance matching to the instrument, avoiding the major weaknesses of the traditional magnetic induction method. The measurement setup can be easily calibrated for both solid and liquid materials and can provide the flexibility in noncontact measurement at a variable distance. We expect a wide range of applications to emerge from this novel approach.