摘要
基于一种新型的基于磁耦合谐振与频率分叉的磁通信方式,使用1/2功率衰减原则来计算3d B带宽的边界条件,同时基于互感理论,推导出负载功率、功率比与通信容量的表达式。通过理论分析得到,带宽与通信容量存在一个最大值,而且通过边界条件,可推导出最大带宽与通信容量的具体表达式。试验结果也表明,本文提出的新的磁通信方式在低频段,宽频带范围内有一个通信带宽与通信容量的峰值。
In this paper, a novel four-coil magnetic communication method based on magnetic resonant coupling and frequency divarication is proposed. The 1/2 power decay is employed to derive the boundary condition of double 3d B bandwidths. Moreover, the expressions of load power, power ratio, and communication capacity are deduced based on the mutual inductance theory. It proves that there exists one common peek value for the bandwidth and communication capacity. Also, the expression of peek value of the maximum capacity is derived by the boundary condition. The experimental results demonstrate that the proposed magnetic communication method has a maximum bandwidth and communication capacity at a wide frequency range, especially at low frequency.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第S1期297-302,共6页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51277037)
关键词
磁通信
磁耦合谐振
频率分叉
带宽
通信容量
Magnetic communication,magnetic resonant coupling,frequency divarication,bandwidth,communication capacity
