辐射研究与辐射工艺学报2025，Vol.43Issue(6)：86-101,16.DOI:10.11889/j.1000-3436.2025-0040
毫米波5G天线阵列电磁暴露剂量学分析
Dosimetric analysis of electromagnetic exposure by millimeter-wave 5G antenna arrays
摘要
Abstract
This study investigated the safety of electromagnetic exposure by mobile-terminal antennas in 5G millimetre-wave communications.A compact,high-gain phased-array antenna operating at 24.9 GHz was designed and its electromagnetic exposure levels were systematically evaluated against the ICNIRP 2020 guidelines.Using COMSOL Multiphysics simulation platform,a 1×4 linear array composed of microstrip patch elements coupled to a metasurface layer was designed,achieving 14 dBi realised gain and 60° beam-steering coverage.The electromagnetic exposure assessment demonstrates that for the input powers of 15 dBm,18 dBm,and 23 dBm,the peak incident power densities(Sinc)were 6.571 W/m2,12.937 W/m2,and 41.068 W/m2,respectively,while the corresponding peak absorbed power densities(Sab)reached 3.761 W/m2,7.404 W/m2,and 23.503 W/m2.For the 23 dBm case,both Sinc and Sab exceed the ICNIRP general-public limits of 31.1 W/m2 and 20 W/m2.Thermal analysis revealed a maximum temperature rise of 0.43 ℃ in the scalp under the 23 dBm scenario,well below the 2 ℃ safety threshold.By employing multi-port independent excitation,the study verified the feasibility of phase-controlled beam steering,providing a key reference for electromagnetic-safety-oriented design of 5G millimetre-wave mobile terminals.关键词
毫米波/5G/天线阵列/电磁暴露/ICNIRPKey words
Millimeter wave/5G/Antenna array/Electromagnetic exposure/ICNIRP分类
信息技术与安全科学引用本文复制引用
杜玥,逯迈,谢圭煜..毫米波5G天线阵列电磁暴露剂量学分析[J].辐射研究与辐射工艺学报,2025,43(6):86-101,16.基金项目
国家自然科学基金(52467026)和甘肃省教育厅项目(2024CXPT-11) Supported by the National Nature Science Foundation of China(52467026)and the Department of Education of Gansu Province(2024CXPT-11) （52467026）
