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Detection of Semi-Solid Materials Utilizing Triple-Rings CSRR Microwave Sensor.

Ahmed Jamal Abdullah Al-Gburi1, Norhanani Abd Rahman1,2, Zahriladha Zakaria1

  • 1Centre of Telecommunication Research & Innovation (CeTRI), Fakulti Kejuruteraan Elektronik dan Kejuruteraan Komputer, Universiti Teknikal Malaysia Melaka, Durian Tungal 76100, Malaysia.

Sensors (Basel, Switzerland)
|March 30, 2023
PubMed
Summary

A novel triple-ring complementary split-ring resonator (CSRR) microwave sensor effectively detects semi-solid materials. This high-Q factor sensor demonstrates high sensitivity for dielectric materials like Di-water and Turmeric.

Keywords:
Q-factorcomplementary split ring resonator (CSRR)polypropylene (PP) tubesample under tests (SUTs)semi-solidsensitivitytriple-rings CSRR

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Area of Science:

  • Microwave Engineering
  • Sensor Technology
  • Materials Science

Background:

  • Complementary split-ring resonators (CSRRs) are widely used in microwave applications.
  • Developing sensitive and selective sensors for semi-solid materials remains a challenge.
  • Existing sensors may lack the required sensitivity or performance for complex dielectric samples.

Purpose of the Study:

  • To design, fabricate, and measure a triple-ring CSRR microwave sensor for semi-solid material detection.
  • To investigate the sensor's performance, including resonant frequency, sensitivity, and Q-factor.
  • To analyze the interaction between the sensor's electromagnetic fields and various semi-solid dielectric samples.

Main Methods:

  • Utilized High-Frequency Structure Simulator (HFSS) microwave studio for sensor design.
  • Fabricated a triple-ring CSRR sensor with a curve-feed and defective ground structure (DGS).
  • Measured sensor performance using six different semi-solid samples (including Di-water and Turmeric) loaded in a polypropylene (PP) tube.

Main Results:

  • The designed triple-ring CSRR sensor resonates at 2.5 GHz and operates in transmission mode.
  • Achieved a high Q-factor of 520 at 2.5 GHz.
  • Demonstrated high sensitivity, with values of approximately 4.806 for Di-water and 4.773 for Turmeric samples.

Conclusions:

  • The developed triple-ring CSRR microwave sensor is highly effective for detecting semi-solid materials.
  • The sensor's high Q-factor and sensitivity make it suitable for analyzing dielectric properties of various samples.
  • The study provides insights into the relationship between loss tangent, permittivity, and Q-factor for sensor applications.