Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning

Microwave sensors are principally sensitive to effective permittivity, and hence not selective to a specific material under test (MUT). In this work, a highly compact microwave planar sensor based on zeroth-order resonance is designed to operate at three distant frequencies of 3.5, 4.3, and 5 GHz, w...

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Main Authors: Nazli Kazemi, Nastaran Gholizadeh, Petr Musilek
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/14/5362
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author Nazli Kazemi
Nastaran Gholizadeh
Petr Musilek
author_facet Nazli Kazemi
Nastaran Gholizadeh
Petr Musilek
author_sort Nazli Kazemi
collection DOAJ
description Microwave sensors are principally sensitive to effective permittivity, and hence not selective to a specific material under test (MUT). In this work, a highly compact microwave planar sensor based on zeroth-order resonance is designed to operate at three distant frequencies of 3.5, 4.3, and 5 GHz, with the size of only <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>λ</mi><mrow><mi>g</mi><mo>−</mo><mi>m</mi><mi>i</mi><mi>n</mi></mrow></msub><mo>/</mo><mn>8</mn></mrow></semantics></math></inline-formula> per resonator. This resonator is deployed to characterize liquid mixtures with one desired MUT (here water) combined with an interfering material (e.g., methanol, ethanol, or acetone) with various concentrations (0%:10%:100%). To achieve a sensor with selectivity to water, a convolutional neural network (CNN) is used to recognize different concentrations of water regardless of the host medium. To obtain a high accuracy of this classification, Style-GAN is utilized to generate a reliable sensor response for concentrations between water and the host medium (methanol, ethanol, and acetone). A high accuracy of 90.7% is achieved using CNN for selectively discriminating water concentrations.
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spelling doaj.art-6e55b411d4c94553bb07d1f282ab7d2b2023-11-30T21:52:22ZengMDPI AGSensors1424-82202022-07-012214536210.3390/s22145362Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine LearningNazli Kazemi0Nastaran Gholizadeh1Petr Musilek2Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, CanadaElectrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, CanadaElectrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, CanadaMicrowave sensors are principally sensitive to effective permittivity, and hence not selective to a specific material under test (MUT). In this work, a highly compact microwave planar sensor based on zeroth-order resonance is designed to operate at three distant frequencies of 3.5, 4.3, and 5 GHz, with the size of only <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>λ</mi><mrow><mi>g</mi><mo>−</mo><mi>m</mi><mi>i</mi><mi>n</mi></mrow></msub><mo>/</mo><mn>8</mn></mrow></semantics></math></inline-formula> per resonator. This resonator is deployed to characterize liquid mixtures with one desired MUT (here water) combined with an interfering material (e.g., methanol, ethanol, or acetone) with various concentrations (0%:10%:100%). To achieve a sensor with selectivity to water, a convolutional neural network (CNN) is used to recognize different concentrations of water regardless of the host medium. To obtain a high accuracy of this classification, Style-GAN is utilized to generate a reliable sensor response for concentrations between water and the host medium (methanol, ethanol, and acetone). A high accuracy of 90.7% is achieved using CNN for selectively discriminating water concentrations.https://www.mdpi.com/1424-8220/22/14/5362microwave sensorselectivityresonatorsmachine learninggenerative adversarial network
spellingShingle Nazli Kazemi
Nastaran Gholizadeh
Petr Musilek
Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning
Sensors
microwave sensor
selectivity
resonators
machine learning
generative adversarial network
title Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning
title_full Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning
title_fullStr Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning
title_full_unstemmed Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning
title_short Selective Microwave Zeroth-Order Resonator Sensor Aided by Machine Learning
title_sort selective microwave zeroth order resonator sensor aided by machine learning
topic microwave sensor
selectivity
resonators
machine learning
generative adversarial network
url https://www.mdpi.com/1424-8220/22/14/5362
work_keys_str_mv AT nazlikazemi selectivemicrowavezerothorderresonatorsensoraidedbymachinelearning
AT nastarangholizadeh selectivemicrowavezerothorderresonatorsensoraidedbymachinelearning
AT petrmusilek selectivemicrowavezerothorderresonatorsensoraidedbymachinelearning