Bioelectromagnetic Dose Characteristics in Bounded Wave Simulator under Nanosecond Pulse

2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Pub Date : 2019-05-01 DOI:10.1109/IMBIOC.2019.8777847

Jiajin Lin, G. Ding, Jing Li, Sheng-long Xu, Wei He

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引用次数: 1

Abstract

In this paper, the bioelectromagnetic dose characteristics of a bounded wave simulator under nanosecond pulse were investigated. By electrostatic field simulation, the distribution of electric field in the bounded wave simulator under experimental conditions was analyzed. The results show that the local field enhancement in space is obvious. The electric field on the surface of the upper electrode under the loading voltage is obviously greater. Furthermore, the SAR value of bioelectromagnetic dose was analyzed. Under 1 pps working operation, 150 kV loading voltage and PML boundary condition, the SAR value is calculated to be $6\times 10^{-5}\ \mathbf{W}/\mathbf{kg}$. Besides, the bioelectromagnetic dose under non-PML boundary condition was explored. The results show that the SAR value at high voltage electrode is maximal. The difference between the maximum and the minimum is 7 dB, which is much more than the dose deviation limit of 3 dB. The results above show that the bioelectromagnetic dose characteristics of the bounded wave simulator under nanosecond pulses are correlated with the position in the simulator. Biological experiments should be carefully designed according to the results of dose analysis.

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纳秒脉冲下有界波模拟器的生物电磁剂量特性

研究了有界波模拟器在纳秒脉冲作用下的生物电磁剂量特性。通过静电场模拟，分析了实验条件下有界波模拟器内的电场分布。结果表明，局部场在空间上有明显的增强。负载电压作用下，上电极表面电场明显增大。进一步分析了生物电磁剂量的SAR值。在1pps工作、150kv负载电压和PML边界条件下，SAR值计算为$6\乘以10^{-5}\ \mathbf{W}/\mathbf{kg}$。此外，探讨了非pml边界条件下的生物电磁剂量。结果表明，高压电极下的SAR值最大。最大值与最小值之差为7db，远远大于3db的剂量偏差限值。上述结果表明，在纳秒脉冲作用下，有界波模拟器的生物电磁剂量特性与模拟器中的位置相关。生物实验应根据剂量分析的结果精心设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)

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