| 基于FDTD方法设计调幅射频辐照头部线圈 |
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| 引用本文： | 蓝茂英,蔡林波,邓官华,段松,韩继钧,辛学刚. 基于FDTD方法设计调幅射频辐照头部线圈[J]. 科学技术与工程, 2017, 17(28) |
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| 作者姓名： | 蓝茂英 蔡林波 邓官华 段松 韩继钧 辛学刚 |
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| 作者单位： | 广东三九脑科医院,广东三九脑科医院,南方医科大学生物医学工程学院,南方医科大学生物医学工程学院,南方医科大学生物医学工程学院 |
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| 基金项目： | 国家自然科学基金(61528102，61671229），广东省省级科技计划项目（2015B020214006，2016A050502026） |
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| 摘 要： | 本文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，S11参数达到了-31.41 dB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。
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| 关 键 词： | 时域有限差分方法；调幅射频辐照；射频线圈；S参数 |
| 收稿时间： | 2017-03-09 |
| 修稿时间： | 2017-04-22 |
The Design of Amplitude-modulated Radiofrequency Exposure Head Coil Based on FDTD Method |
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| LAN Mao-ying,CAI Lin-bo,DENG Guan-hu,DUAN Song,HAN Ji-jun and. The Design of Amplitude-modulated Radiofrequency Exposure Head Coil Based on FDTD Method[J]. Science Technology and Engineering, 2017, 17(28) |
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| Authors: | LAN Mao-ying CAI Lin-bo DENG Guan-hu DUAN Song HAN Ji-jun and |
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| Abstract: | In this study, a non-contact RF coil was designed for the biological effects research of amplitude-modulated radiofrequency electromagnetic fields. First, the FDTD method was used to obtain the electromagnetic simulation results according to the demand of design for RF exposure coil. Then the prototype of the coil was bulit based on the results of the simulation. The results of S parameter and signal test showed that S11 parameter reached to -31.41 dB and the coil resonated at the carrier frequency, reached the requirement. This RF coil can be used as the core hardware component in the subsequent biological effect research of amplitude-modulated radiofrequency electromagnetic fields. |
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| Keywords: | finite difference time domain (FDTD) method amplitude-modulated radiofrequency exposure RF coil s parameter |
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