Title: Improved approach using multiple planar complementary split-ring resonators for accurate measurement of permittivity
Abstract: This paper presents a non-destructive planar single-compound triple complementary split-ring resonator (TCSRR) to improve the measurement of the dielectric constants of a material under test (MUT). This proposed microwave sensor technology requires the multiple-square concentric ring to generate multiple non-identical frequency responses to take estimate for dielectric property measurement, and the cooperated estimate of SC-TCSRR can effectively mitigate the permittivity measurement error. The dielectric constants and thickness of a MUT are dependent on the operational resonance frequency deviation. The CSRR sensor is etched on the ground plane of a microstrip line. The SC-TCSRR sensor operating between 1.5 GHz to 4.6 GHz band is fabricated by specific ratio range and tested for verification. For calculation and analysis, the permittivity of a MUT is extracted by two resonant frequencies (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</sub> , f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</sub> ). This proposed method uses three sets (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</sub> , f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</sub> ), f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</sub> , f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</sub> ) and f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</sub> , f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</sub> ) and averages the measured results to improve measurement accuracy. The experiments yielded average measurement errors less than 1.60 % for the permittivity of MUT. And, the result is more accurate than dual ring CSRR's measurement error result [1] 4.63%. This effective TCSRR sensor offers low computational costs, easy fabrication and precise measurement.
Publication Year: 2016
Publication Date: 2016-03-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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