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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
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New Complementary Resonator for Permittivity- and Thickness-Based Dielectric Characterization.

Tanveerul Haq1, Slawomir Koziel1,2

  • 1Engineering Optimization and Modeling Center, Reykjavik University, 102 Reykjavik, Iceland.

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Summary
This summary is machine-generated.

This study introduces a novel complementary crossed arrow resonator (CCAR) for highly sensitive microwave dielectric material characterization. The CCAR sensor offers accurate permittivity and thickness measurements with low cost and enhanced performance.

Keywords:
calibrationcomplementary crossed arrow resonatordesign optimizationdielectric characterizationhigh sensitivityinverse modelingpermittivitythickness

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Microwave Engineering

Background:

  • Designing high-performance complementary meta-resonators for sensitive microwave sensors is challenging.
  • Accurate dielectric material characterization requires sensors with high sensitivity and consistent evaluation capabilities.

Purpose of the Study:

  • To design and implement a novel complementary resonator with high sensitivity for dielectric substrate characterization.
  • To investigate the resonator's performance based on permittivity and thickness variations.

Main Methods:

  • A complementary crossed arrow resonator (CCAR) integrated with a microstrip transmission line was designed and optimized.
  • The sensor's working principle was explained using a lumped-element equivalent circuit.
  • Fabrication was performed using LPKF protolaser, and calibration involved materials with varying dielectric properties and thicknesses.

Main Results:

  • The optimized CCAR sensor resonates at 15 GHz and demonstrates exceptional sensitivity to changes in material permittivity and thickness.
  • A two-dimensional calibration surface was developed using inverse regression modelling for precise measurements.
  • The sensor achieved a high sensitivity of 5.74%.

Conclusions:

  • The proposed CCAR sensor offers a versatile and cost-effective solution for dielectric characterization.
  • Its enhanced performance surpasses state-of-the-art designs, making it suitable for various applications.
  • The sensor provides accurate measurements of dielectric permittivity and thickness.