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Cylindrical Dielectric Resonator Antenna-Based Sensors for Liquid Chemical Detection

Iqbal A 1 , Smida A 2 , Saraereh OA 3 , Alsafasfeh QH 4 , Mallat NK 5 , Lee BM 6

Affiliations 

  • 1 Centre for Wireless Technology (CWT), Faculty of Engineering, Multimedia University, Cyberjaya 63100, Malaysia. aiqbal@ieee.org
  • 2 Department of Medical Equipment Technology, College of Applied Medical Sciences, Majmaah University, 11952 AlMajmaah, Saudi Arabia. a.smida@mu.edu.sa
  • 3 Department of Electrical Engineering, Hashemite University, Zarqa 13115, Jordan. eloas2@hu.edu.jo
  • 4 Department of Electrical Power and Mechatronics Engineering, Tafila Technical University, Tafila 11183, Jordan. qsafasfeh@ttu.edu.jo
  • 5 College of Engineering, Al Ain University of Science and Technology, Al Ain 64141, United Arab Emirates (UAE). nazih.mallat@aau.ac.ae
  • 6 School of Intelligent Mechatronics Engineering, Sejong University, Seoul 05006, Korea. blee@sejong.ac.kr
Sensors (Basel), 2019 Mar 08;19(5).
PMID: 30857265 DOI: 10.3390/s19051200

Abstract

A compact, cylindrical dielectric resonator antenna (CDRA), using radio frequency signals to identify different liquids is proposed in this paper. The proposed CDRA sensor is excited by a rectangular slot through a 3-mm-wide microstrip line. The rectangular slot has been used to excite the CDRA for H E M 11 mode at 5.25 GHz. Circuit model values (capacitance, inductance, resistance and transformer ratios) of the proposed CDRA are derived to show the true behaviour of the system. The proposed CDRA acts as a sensor due to the fact that different liquids have different dielectric permittivities and, hence, will be having different resonance frequencies. Two different types of CDRA sensors are designed and experimentally validated with four different liquids (Isopropyl, ethanol, methanol and water).

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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