Safety evaluation of human exposure using large-scale analysis based on ultra-high resolution body model in quasi-millimeter and millimeter wave bands

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04039
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21020:Communication and network engineering-related
• Research Institution: Kitami Institute of Technology
• Principal Investigator: Taguchi Kenji 北見工業大学, 工学部, 准教授 (60435485)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 準ミリ波帯 / ミリ波帯 / 超高解像度人体ボクセルモデル / 人体ばく露 / 安全性評価 / 国際標準化 / SAR / APD

Outline of Final Research Achievements

In this study, the exposure evaluation of human body for electromagnetic fields with highly accurate in the quasi-millimeter wave and millimeter wave bands, which has been difficult in the past, by organically combining ultra-high resolution numerical models of the human body based on anatomy using high-resolution technology, and the large-scale electromagnetic field analysis technology using a parallel supercomputer. The importance of skin modeling and the quantitative influence of skin thickness on the evaluation guidelines in this frequency band are clarified for the first time through the evaluation of APD for local exposure and the whole-body average SAR for whole-body exposure. These are important scientific knowledge and data for the revision of international radio protection guidelines for next-generation wireless communications.

Free Research Field

計算電磁気学

Academic Significance and Societal Importance of the Research Achievements

超高解像度化技術を応用した解剖学に基づく高精細人体数値モデルと大規模解析技術により、これまで数値解析が困難であった準ミリ波・ミリ波帯において体温上昇と関係が深い人体局所及び全身の電磁吸収解析を実現し、具体的な人体安全性の評価を世界に先駆けて実施したところに学術的意義がある。本研究により得られた知見及び数値データは、次世代無線通信の国際電波防護ガイドライン策定及び改訂のために有用であり、直接的には人体の安全性、間接的には通信速度の向上に大きく寄与出来ることが社会的意義となる。