基于时域有限差分方法设计调幅射频辐照头部线圈

发布时间：2018-02-28 07:42

  本文关键词： 时域有限差分方法 调幅射频辐照 射频线圈 S参数　出处：《科学技术与工程》2017年28期 　论文类型：期刊论文

【摘要】：研究应用于调幅射频电磁场生物效应研究的非接触式射频线圈。首先根据射频辐照线圈的设计要求,通过时域有限差分(finite difference time domain,FDTD)方法进行电磁仿真计算分析;进而根据仿真计算结果实现辐照原型射频线圈。S参数测试和信号测试结果显示,S_(11)参数达到了-31.41 d B,且射频线圈共振在载波频率上,所实现的射频线圈符合设计要求。该射频线圈可作为核心硬件部件应用于后续的调幅射频电磁场生物效应研究中。
[Abstract]:The non-contact RF coils used in the biological effect study of amplitude modulated RF electromagnetic fields are studied. Firstly, according to the design requirements of RF radiation coils, electromagnetic simulation analysis is carried out by finite difference time domain FDTD method. Furthermore, according to the simulation results, the parameters of the radio-frequency coils. S parameters and signals of the irradiated prototype are measured. The results show that the parameters are -31.41 dB, and the RF coils resonate on the carrier frequency. The realized RF coil meets the design requirements and can be used as a core hardware component to study the biological effects of AM RF electromagnetic field.
【作者单位】： 南方医科大学生物医学工程学院;广东三九脑科医院;
【基金】：国家自然科学基金(61528102,61671229) 广东省省级科技计划(2015B020214006,2016A050502026)资助
【分类号】：R318;TM55
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本文编号：1546388