人體吸收電磁能量與入射方向和極化的關(guān)系
THE RELATIONSHIP BETWEEN THE EM ENERGY ABSORPTION OF HUMAN BODY AND THE INCIDENT DIRECTION AND POLARIZATION OF PLANE WAVE
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摘要: 本文討論了用時(shí)域有限差分法計(jì)算在平面電磁波照射下人體對(duì)電磁能量的吸收問題。計(jì)算了各種入射方向和極化條件下非均勻塊狀人體模型中的局部比吸收率(SAR)分布。計(jì)算結(jié)果表明,人體并不總是在正面入射時(shí)吸收能量最多;同時(shí)還表明,局部比吸收率比平均比吸收率更值得重視,因?yàn)榫植课章实淖畲笾低热砥骄荡髱妆兜绞畮妆?。本文的?jì)算結(jié)果豐富了人們?cè)谌梭w電磁劑量學(xué)方面的知識(shí)。
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關(guān)鍵詞:
- 電磁能量吸收; 時(shí)域有限差分法; 比吸收率; 電磁劑量學(xué)
Abstract: The problems of EM energy absorption of human body irradiated by plane wave are discussed by using the Finite-Difference Time-Domain (FD-TD) method. The local SAR (Specific Absorption Rare), the whole-body-averaged SAR and the layer-averaged SAR for the inhomogenous block model of human body with different incident direction and different polarization of the incident waves are calculated. The results show that the appearance of maximum EM energy absorption is not always at the situation of the front inciden... -
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