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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Modulation of the Antenna-Head Interaction inside a Closed Environment Using MOM-GEC Method
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Modulation of the Antenna-Head Interaction inside a Closed Environment Using MOM-GEC Method

机译：使用MOM-GEC方法在封闭环境中调制天线-头相互作用

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摘要

The interaction between human head and GSM antenna evaluations are usually conducted in freespace situations but wireless communication devices are frequently used in enclosed environments, such as vehicle, that consist of metallic boundaries. In such fully enclosed or semi- enclosed spaces, human exposure in terms of SAR is closely related to the EM field, which is multiplied, reflected and scattered by the metallic walls of the enclosure. This could lead to complicated resonance effects and affections in the antenna performances. This possible argument of an EM field inside an enclosure has raised serious concerns among the general public. This paper will therefore focus on the impact of dipole antenna modeling the handsets on the SAR distribution inside a cavity modeling the vehicle. Theoretical formulation and simulations are used to study this phenomenon but there is a lot of limitations. Despite, modulation using numerical method are used. A MoMGEC modeling approach is applied to study the behavior of a dipole antenna resonating at 1.8 GHz. First of all, we are interested in studying the convergence of the input impedance. The current and the electric field distribution are simulated. The specific absorption rate (SAR) is examined for several different tissues.
机译：人头和GSM天线评估之间的交互通常在自由空间情况下进行，但是无线通信设备经常用于封闭环境中，例如由金属边界组成的车辆。在这种完全封闭或半封闭的空间中，人体对SAR的暴露与电磁场密切相关，电磁场被壳体的金属壁倍增，反射和散射。这可能导致复杂的谐振效应和天线性能的影响。封闭体内的电磁场的这种可能论点引起了公众的严重关注。因此，本文将重点关注偶极天线建模对手机建模腔内SAR分布的影响。理论公式和模拟用于研究这种现象，但是有很多限制。尽管如此，仍使用数值方法进行调制。 MoMGEC建模方法用于研究在1.8 GHz下谐振的偶极天线的行为。首先，我们对研究输入阻抗的收敛性很感兴趣。模拟电流和电场分布。检查几种不同组织的比吸收率（SAR）。

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