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Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide

In this paper, an oblique aperture ridge waveguide operating at 2450 MHz is proposed, and, using the ridge waveguide, a permittivity measurement system is constructed which can measure the permittivity of materials during microwave heating. The system calculates the amplitudes of the scattering para...

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Detalles Bibliográficos
Autores principales: Gou, Mingyi, Chen, Qian, Dong, Penghao, Liu, Changjun, Huang, Kama
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10142508/
https://www.ncbi.nlm.nih.gov/pubmed/37112376
http://dx.doi.org/10.3390/s23084035
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author Gou, Mingyi
Chen, Qian
Dong, Penghao
Liu, Changjun
Huang, Kama
author_facet Gou, Mingyi
Chen, Qian
Dong, Penghao
Liu, Changjun
Huang, Kama
author_sort Gou, Mingyi
collection PubMed
description In this paper, an oblique aperture ridge waveguide operating at 2450 MHz is proposed, and, using the ridge waveguide, a permittivity measurement system is constructed which can measure the permittivity of materials during microwave heating. The system calculates the amplitudes of the scattering parameters by using the forward, reflected and transmitted powers of the power meters, and it reconstructs the permittivity of the material by combining the scattering parameters with an artificial neural network. The system is used to measure the complex permittivity of mixed solutions of methanol and ethanol with different ratios at room temperature, and the permittivity of methanol and ethanol with increasing temperature, from room temperature to 50 °C. The measured results are in good agreement with the reference data. The system allows simultaneous measurement of the permittivity with microwave heating and provides real-time, rapid changes in the permittivity during heating, avoiding thermal runaway and providing a reference for applications of microwave energy in the chemical industry.
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spelling pubmed-101425082023-04-29 Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide Gou, Mingyi Chen, Qian Dong, Penghao Liu, Changjun Huang, Kama Sensors (Basel) Communication In this paper, an oblique aperture ridge waveguide operating at 2450 MHz is proposed, and, using the ridge waveguide, a permittivity measurement system is constructed which can measure the permittivity of materials during microwave heating. The system calculates the amplitudes of the scattering parameters by using the forward, reflected and transmitted powers of the power meters, and it reconstructs the permittivity of the material by combining the scattering parameters with an artificial neural network. The system is used to measure the complex permittivity of mixed solutions of methanol and ethanol with different ratios at room temperature, and the permittivity of methanol and ethanol with increasing temperature, from room temperature to 50 °C. The measured results are in good agreement with the reference data. The system allows simultaneous measurement of the permittivity with microwave heating and provides real-time, rapid changes in the permittivity during heating, avoiding thermal runaway and providing a reference for applications of microwave energy in the chemical industry. MDPI 2023-04-17 /pmc/articles/PMC10142508/ /pubmed/37112376 http://dx.doi.org/10.3390/s23084035 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Gou, Mingyi
Chen, Qian
Dong, Penghao
Liu, Changjun
Huang, Kama
Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide
title Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide
title_full Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide
title_fullStr Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide
title_full_unstemmed Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide
title_short Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide
title_sort design of a microwave heating and permittivity measurement system based on oblique aperture ridge waveguide
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10142508/
https://www.ncbi.nlm.nih.gov/pubmed/37112376
http://dx.doi.org/10.3390/s23084035
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