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损耗介质透镜实现皮秒脉冲电场在乳房组织模型中的聚焦

DOI: 10.13336/j.1003-6520.hve.2015.04.041, PP. 1377-1382

Keywords: ps脉冲电场,psPEF,冲激脉冲辐射天线,IRA,乳房组织模型,电场路径损耗,损耗介质透镜,有效聚焦

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Abstract:

为实现ps脉冲电场(psPEF)经冲激脉冲辐射天线(IRA)发射后在近似实际乳房组织(电导率为0.5S/m)模型中的有效聚焦,采用计算机仿真技术(CST)Microwavestudio软件构建了天线及乳房组织模型并计算了psPEF在其中的聚焦特性。结果表明引入优化参数的损耗介质材料(厚度为1cm,电导率为10S/m)衰减小路径角电场,最终能够实现psPEF在焦点F2处的聚焦(电场强度E=0.08V/m);损耗材料的引入使得焦点F2处的电场强度大大减小,引入损耗介质透镜,不仅实现了psPEF在乳房组织模型中的良好聚焦,而且焦点F2处的电场强度(E=0.45V/m)大大增强。因此,优化设计的损耗介质透镜能够实现psPEF在生物组织中的有效聚焦。

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