Strain powered antennas
Strain powered antennas
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DOI：
10.1063/1.4975030
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发表时间：
2017-01-28
影响因子：
3.2
通讯作者：
Carman, Greg P.
中科院分区：
文献类型：
--
作者：
Domann, John P.;Carman, Greg P.
本文提出了创建应变供电天线辐射电磁能量的机械振动的压电或压磁材料。推导并分析了应变供电电小天线电磁辐射的闭合解析模型。讨论了应变供电天线的基本标度律和频率依赖性。应变供电的电小天线的辐射效率与传统的电偶极子进行了对比。分析结果表明，在第一机械谐振操作产生最有效的应变供电辐射相对于电偶极天线。利用谐振分析来确定产生高效应变供电天线的材料属性空间。这些结果表明，如何正确设计的应变供电天线可以辐射更有效地比一个同样大小的电偶极子天线。出版社：AIP Publishing
This paper proposes the creation of strain powered antennas that radiate electromagnetic energy by mechanically vibrating a piezoelectric or piezomagnetic material. A closed form analytic model of electromagnetic radiation from a strain powered electrically small antenna is derived and analyzed. Fundamental scaling laws and the frequency dependence of strain powered antennas are discussed. The radiation efficiency of strain powered electrically small antennas is contrasted with a conventional electric dipole. Analytical results show that operating at the first mechanical resonance produces the most efficient strain powered radiation relative to electric dipole antennas. A resonant analysis is exploited to determine the material property space that produces efficient strain powered antennas. These results show how a properly designed strain powered antenna can radiate more efficiently than an equally sized electric dipole antenna. Published by AIP Publishing.