The Performance Analysis of a Spinning Magnet as a Mechanical Antenna
The Performance Analysis of a Spinning Magnet as a Mechanical Antenna
复制标题
旋转磁体作为机械天线的性能分析
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
B. Liu
中科院分区：
文献类型：
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作者：
Wei Shi;Qiang Zhou;B. Liu
本文研究了旋转磁铁作为机械天线的电磁特性。分析了旋转磁体与正交磁偶极子的等效关系。因此，可以通过叠加具有90°相位偏移的两个并置正交磁偶极子解来分析具有旋转磁体的机械天线的性能。利用自由空间中的并矢绿色函数，给出了旋转磁体磁场计算的严格解析公式。给出了160 Hz时的仿真结果并进行了讨论。这项工作的目的是奠定基础，为今后的研究与旋转磁铁在分层介质的机械天线以及旋转磁铁阵列的应用。
This paper investigates the electromagnetic characteristics of a spinning magnet as a possible mechanical antenna. The equivalent relation between a spinning magnet and an orthogonal magnetic dipole is analyzed. Thus the performance of the mechanical antenna with a spinning magnet can be analyzed by superimposing the two collocated orthogonal magnetic dipole solutions with a 90° phase offset. With the dyadic green’s function in free space, the paper provided the rigorous analytic formula for field computation of the spinning magnet. The simulated results at 160 Hz are given and discussed. This work is intended to lay the foundation for future study on a mechanical antenna with a spinning magnet over the layered medium as well as on spinning magnet array applications.