High-resolution probe design for measuring the dielectric properties of human tissues

BACKGROUND: In order to use the microwave to measure the dielectric constant of the human body and improve the measurement resolution, a small near-field probe working at 915 MHz is designed in this paper. METHOD: Based on the electric small loop antenna model loaded by the spiral resonator (SR), a...

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Xinran, Guo, Hongfu, Zhou, Chen, Bai, Junkai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2021
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8403451/
https://www.ncbi.nlm.nih.gov/pubmed/34454484
http://dx.doi.org/10.1186/s12938-021-00924-1
_version_ 1783746002864308224
author Wang, Xinran
Guo, Hongfu
Zhou, Chen
Bai, Junkai
author_facet Wang, Xinran
Guo, Hongfu
Zhou, Chen
Bai, Junkai
author_sort Wang, Xinran
collection PubMed
description BACKGROUND: In order to use the microwave to measure the dielectric constant of the human body and improve the measurement resolution, a small near-field probe working at 915 MHz is designed in this paper. METHOD: Based on the electric small loop antenna model loaded by the spiral resonator (SR), a small near-field probe was designed. The probe model is designed and optimized by the HFSS (high frequency structure simulator) software. The human tissues were tested by the manufactured probe and the relationship between the S11 parameters of the probe and the human tissues was analyzed. RESULTS AND CONCLUSIONS: A probe with small size was designed and fabricated, with the overall size of 10.0 mm × 12.0 mm × 0.8 mm. The probe has a good performance with a 30.7 dB return loss, a 20 MHz bandwidth at the resonance point, and a distance resolution of 10 mm. Due to the small size and good resolution of the probe, it can be used in the measurement of human tissues.
format Online
Article
Text
id pubmed-8403451
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher BioMed Central
record_format MEDLINE/PubMed
spelling pubmed-84034512021-08-30 High-resolution probe design for measuring the dielectric properties of human tissues Wang, Xinran Guo, Hongfu Zhou, Chen Bai, Junkai Biomed Eng Online Research BACKGROUND: In order to use the microwave to measure the dielectric constant of the human body and improve the measurement resolution, a small near-field probe working at 915 MHz is designed in this paper. METHOD: Based on the electric small loop antenna model loaded by the spiral resonator (SR), a small near-field probe was designed. The probe model is designed and optimized by the HFSS (high frequency structure simulator) software. The human tissues were tested by the manufactured probe and the relationship between the S11 parameters of the probe and the human tissues was analyzed. RESULTS AND CONCLUSIONS: A probe with small size was designed and fabricated, with the overall size of 10.0 mm × 12.0 mm × 0.8 mm. The probe has a good performance with a 30.7 dB return loss, a 20 MHz bandwidth at the resonance point, and a distance resolution of 10 mm. Due to the small size and good resolution of the probe, it can be used in the measurement of human tissues. BioMed Central 2021-08-28 /pmc/articles/PMC8403451/ /pubmed/34454484 http://dx.doi.org/10.1186/s12938-021-00924-1 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Wang, Xinran
Guo, Hongfu
Zhou, Chen
Bai, Junkai
High-resolution probe design for measuring the dielectric properties of human tissues
title High-resolution probe design for measuring the dielectric properties of human tissues
title_full High-resolution probe design for measuring the dielectric properties of human tissues
title_fullStr High-resolution probe design for measuring the dielectric properties of human tissues
title_full_unstemmed High-resolution probe design for measuring the dielectric properties of human tissues
title_short High-resolution probe design for measuring the dielectric properties of human tissues
title_sort high-resolution probe design for measuring the dielectric properties of human tissues
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8403451/
https://www.ncbi.nlm.nih.gov/pubmed/34454484
http://dx.doi.org/10.1186/s12938-021-00924-1
work_keys_str_mv AT wangxinran highresolutionprobedesignformeasuringthedielectricpropertiesofhumantissues
AT guohongfu highresolutionprobedesignformeasuringthedielectricpropertiesofhumantissues
AT zhouchen highresolutionprobedesignformeasuringthedielectricpropertiesofhumantissues
AT baijunkai highresolutionprobedesignformeasuringthedielectricpropertiesofhumantissues

Ejemplares similares