Metamaterial-based microwave sensor having novel and compact structure of the resonators and the slotted microstrip transmission line is proposed for highly precise measurement of dielectric properties of the materials under test (MUTs). The proposed sensor is designed and simulated on Rogers’ substrate RO4003C by using the ANSYS HFSS software. A single and accumulative notch depth of -44.29 dB in the transmission coefficient () is achieved at the resonant frequency of 5.15 GHz. The negative constitutive parameters (permittivity and permeability) are extracted from the -parameters which are the basic property of metamaterials or left handed materials (LHMs). The proposed sensor is fabricated and measured through the PNA-X (N5247A). The sensitivity analysis is performed by placing various standard dielectric materials onto the sensor and measuring the shift in the resonant frequencies of the MUTs. A parabolic equation of the proposed sensor is formulated to approximate the resonant frequency and the relative permittivity of the MUTs. A very strong agreement among the simulated, measured, and calculated results is found which reveals that the proposed sensor is a highly precise sensor for the characterization of dielectric properties of the MUTs. Error analysis is performed to determine the accuracy of the proposed sensor. A very small percentage of error (0.81%) and a very low standard deviation are obtained which indicate high accuracy of the proposed sensor.

中文翻译：

---

使用开槽微带传输线的高精度互补超材料传感器

提出了一种具有新颖紧凑结构的谐振器和开槽微带传输线的基于超材料的微波传感器，用于高精度测量被测材料 (MUT) 的介电特性。所提出的传感器是通过使用 ANSYS HFSS 软件在 Rogers 的基板 RO4003C 上设计和模拟的。在 5.15 GHz 的谐振频率下，传输系数 ( )中的单个累积陷波深度为 -44.29 dB 。负本构参数（介电常数和渗透率）从-参数是超材料或左手材料 (LHM) 的基本属性。建议的传感器是通过 PNA-X (N5247A) 制造和测量的。通过将各种标准介电材料放置在传感器上并测量 MUT 谐振频率的偏移来执行灵敏度分析。提出的传感器的抛物线方程被公式化以近似 MUT 的谐振频率和相对介电常数。发现模拟、测量和计算结果之间非常一致，这表明所提出的传感器是用于表征 MUT 介电特性的高精度传感器。执行误差分析以确定所建议的传感器的准确性。非常小的错误百分比（0.