人体皮膚組織を対象とした開放終端同軸プローブによる複素比誘電率のin-vivo測定

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2011/12/01

タイトル(英語): In-vivo Measurement of Complex Relative Permittivity for Human Skin Tissues Using Open-Ended Coaxial Probe

著者名: 佐藤　祐介（名古屋工業大学大学院），平田　晃正（名古屋工業大学大学院），藤原　修（名古屋工業大学大学院）

著者名(英語): Yusuke Sato (Graduate School of Engineering, Nagoya Institute of Technology), Akimasa Hirata (Graduate School of Engineering, Nagoya Institute of Technology), Osamu Fujiwara (Graduate School of Engineering, Nagoya Institute of Technology)

キーワード: 電波曝露，SAR，複素比誘電率，皮膚組織，in-vivo測定，ばらつき　　Electromagnetic field exposure，SAR，relative complex permittivity，skin tissue，in-vivo measurement，variability

要約(英語): We made in-vivo measurement of the complex relative permittivity of palm and sole in the frequency range from 100 MHz to 40 GHz with a network analyzer and an open-ended coaxial probe, which was compared with Gabriel in-vitro data for skin tissue to reveal that the in-vivo measurement results are mostly lower than the in-vitro data. For validation, we measured the dielectric constant of Teflon sheet with respect to its thickness from 0.05 mm to 5.00 mm, which showed that the open-ended coaxial probe provides sufficient measurement accuracy for Teflon with a thickness of over 0.5 mm, however, the probe data can be affected by the material beneath the Teflon with a thickness of less than 0.5 mm. This means that the in-vivo palm data derive from the epidermis and the dermis including blood, while the in-vivo sole data come from the epidermis. For further investigation, under the assumption that in-vitro data derive from a mixture of epidermis and blood, we calculated the complex relative permittivity for the compound from the Litchtenecker's law of exponent to show a possibility that due to the inclusion of blood, in-vitro measurement may provide a higher relative permittivity than in-vivo measurement.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.131 No.12 （2011） 特集：電気関係学会東海支部連合大会

本誌掲載ページ: 2040-2045 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/131/12/131_12_2040/_article/-char/ja/