Novel Complementary Resonator for Dielectric Characterization of Substrates Based on Permittivity and Thickness

Tanveer Haq Ul; Sławomir Kozieł

doi:10.1109/jsen.2023.3332124

Novel Complementary Resonator for Dielectric Characterization of Substrates Based on Permittivity and Thickness

Abstract

This paper presents a novel complementary resonator featuring high sensitivity, low fabrication cost, and improved performance. The proposed structure consists of a complementary concentric square and circular ring resonator (CCSCRR) with multiple splits to enhance the inductance of the resonator. The proposed CCSCRR is coupled to a microstrip transmission line with an impedance of fifty ohms to create a high-sensitivity sensor. The lumped element equivalent circuit is employed to explain the sensor's operating principle. The geometric parameters of the CCSCRR are optimized to resonate at 15 GHz and the optimized sensor is fabricated on 0.762 mm thick dielectric substrate AD250 (εr = 2.5 ± 0.04). Dielectric materials with relative permittivity ranging from 2.5 to 10.2 and thickness from 0.508 mm to 1.905 mm are employed to investigate the properties of the proposed sensor and to carry out its calibration. Based on the measured resonant frequencies of the CCSCRR sensor when loaded with different materials under test (MUTs), an inverse regression model is constructed to predict the permittivity of the MUT. Comparisons with state-of-the-art microwave devices show that the proposed design is superior in terms of sensitivity, dielectric characterization reliability, and the applicability scope in terms of the MUT’s thickness and permittivity.

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Authors (2)

Tanveer Haq Ul
Sławomir Kozieł prof. dr inż.

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Keywords

COMPLEMENTARY RESONATOR, CALIBRATION, DIELECTRIC CHARACTERIZATION, HIGH SENSITIVITY, MICROWAVE SENSOR

Details

Category:

Articles

Type:

artykuły w czasopismach

Published in:

IEEE SENSORS JOURNAL no. 24, pages 195 - 203,
ISSN: 1530-437X

Language:

English

Publication year:

2024

Bibliographic description:

Haq Ul T., Kozieł S.: Novel Complementary Resonator for Dielectric Characterization of Substrates Based on Permittivity and Thickness// IEEE SENSORS JOURNAL -Vol. 24,iss. 1 (2023), s.195-203

DOI: