Extremely-Low Frequency Mechanical Antenna Based on Vibrating Permanent Magnet
Extremely-Low Frequency Mechanical Antenna Based on Vibrating Permanent Magnet
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DOI：
10.30919/es8d586
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发表时间：
2021
影响因子：
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通讯作者：
Menghao Guo;Xi Wen;Shaolong Yang;Jianchun Xu;Xuchao Pan;K. Bi
中科院分区：
文献类型：
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作者：
Menghao Guo;Xi Wen;Shaolong Yang;Jianchun Xu;Xuchao Pan;K. Bi
在过去的几年中，极低频（ELF）通信激发了广泛的研究兴趣。到目前为止，大多数永磁机械天线通常旋转磁铁来产生电磁波。在这里，我们展示了一种新的机械天线的基础上振动永磁体。这种机械天线通过永磁体的往复运动辐射电磁波。有限元仿真和实验验证了振动模式机械天线的辐射特性。与旋转永磁机械天线相比，该天线在1m处可产生峰值为0.179mV的感应电压。仿真和实验结果均表明，该机械天线能够在ELF波段产生稳定的时变电磁波。该振型机械天线为永磁机械天线的设计提供了一种新的思路。
Extremely-low-frequency (ELF) communication has stimulated widespread research interest during past years. Up to now, most permanent magnet mechanical antennas usually rotate the magnet to generate electromagnetic waves. Here we demonstrate a new mechanical antenna based on vibrating permanent magnet. This mechanical antenna radiates electromagnetic waves through the reciprocating movement of permanent magnets. Finite element simulations and experiments are applied to verify the radiation characteristics of the vibrating mode mechanical antenna. Compare with the rotating permanent magnet mechanical antenna, this antenna can generate an induced voltage with a peak value of 0.179 mV at 1 m. Both the simulated and experimental results indicate that this mechanical antenna can successfully generate stable time-varying electromagnetic waves in the ELF band. This vibrating mode mechanical antenna paves a way for the design of permanent magnet mechanical antenna.