Tang Xiaocong, Gao Zhiqiang, Wei Jie, Li Zheyi, Yi Yang, Yang Fan, Muhammad Azeem, Wang Cong
School of Information and Communication, Harbin Institute of Technology, Harbin 150001, China.
School of Astronautics, Harbin Institute of Technology, Harbin 150001, China.
Sensors (Basel). 2023 Jul 20;23(14):6551. doi: 10.3390/s23146551.
In this work, a microwave resonator sensor with a unique configuration consisting of three resonators and two feedlines is proposed. This novel design aims to improve the performance and functionality of microwave resonator sensors for various applications. The frequency response of the sensor to materials with different dielectric constants is simulated. The results show that the most sensitive region of the sensor is located on the first interdigital structure, and placing the materials in other regions would enhance the linear correlation of its frequency response. The sensor also exhibits the ability to distinguish whether the same material has defects and the ability to qualitatively detect subtle changes in dielectric constant. Finally, the proposed sensor is fabricated and measured under the condition consistent with the simulation environment. The measured results are basically consistent with the simulation results, which confirms the potential of this sensor in detecting dielectric constants and resolving materials with defects, and the response of the sensor to the materials under test demonstrates its potential in measuring different thicknesses and loss tangents.
在这项工作中，提出了一种具有独特结构的微波谐振器传感器，该结构由三个谐振器和两条馈线组成。这种新颖的设计旨在提高用于各种应用的微波谐振器传感器的性能和功能。模拟了传感器对具有不同介电常数的材料的频率响应。结果表明，传感器最敏感的区域位于第一个叉指结构上，将材料放置在其他区域会增强其频率响应的线性相关性。该传感器还具有区分相同材料是否存在缺陷的能力以及定性检测介电常数细微变化的能力。最后，在所提出的传感器在与模拟环境一致的条件下进行制造和测量。测量结果与模拟结果基本一致，这证实了该传感器在检测介电常数和分辨有缺陷材料方面的潜力，并且传感器对被测材料的响应证明了其在测量不同厚度和损耗角正切方面的潜力。
