A Low-Cost Multiple Complementary Split-Ring Resonator-Based Microwave Sensor for Contactless Dielectric Characterization of Liquids

被引：107

作者：

Javed, Ahmed ^{[1
]}

Arif, Ali ^{[1
]}

Zubair, Muhammad ^{[1
]}

Mehmood, Muhammad Qasim ^{[1
]}

Riaz, Kashif ^{[1
]}

机构：

[1] Informat Technol Univ ITU Punjab, Elect Engn Dept, NanoTech Lab, Lahore 54600, Pakistan

来源：

IEEE SENSORS JOURNAL | 2020年 / 20卷 / 19期

关键词：

Sensors; Liquids; Dielectrics; Microstrip; Resonant frequency; Substrates; Electric fields; Multiple complementary split ring resonator (MCSRR); microwave sensor; dielectric characterization; low-cost; liquid; binary mixture; PERMITTIVITY MEASUREMENTS; CALIBRATION;

D O I：

10.1109/JSEN.2020.2998004

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a low-cost, easy-to-fabricate, contactless microwave sensor for dielectric characterization of liquids. The design of the proposed sensor is based on a multiple complementary split-ring resonator (MCSRR) fabricated on a low-cost FR-4 substrate. A glass capillary tube having an inner diameter of 0.008 degrees 0 is inserted in the high electric field region of theMCSRR to carry the liquid under test. The sensor is designed to operate at a resonant frequency of 2.45GHz for an empty tube and shifted resonant peaks are utilized for the dielectric characterization of different liquids. The maximum observed shifts in resonant frequency and Q factor are up to 400MHz and 31, respectively. The numerically established relations are experimentally verified through fabricated sensor for various binary mixtures of water and ethanol. The percentage errors between the calculated and reference permittivity of different samples are noticed to be less than 5%. The proposed device promises to be a cost-effective and convenient solution for accurate dielectric characterization of liquids and their binary aqueous solutions.

引用

页码：11326 / 11334

页数：9

共 37 条

[1] Novel Microwave Microfluidic Sensor Using a Microstrip Split-Ring Resonator [J].