基于频域分离解调的复合信源无线电能与信号并行传输技术

提出了一种并联LC隔离型电场耦合式无线电能与信号并行传输电路拓扑。该拓扑依靠自身阻抗特性实现了绝大部分电能串扰的隔离。同时,该拓扑具有较宽的信道通频带宽,克服了目前已有电能与信号并行传输系统中信道通频带宽窄的问题。充分利用该带宽,以多路复合信源作为信道输入,采用快速傅里叶变换算法对信道输出信号进行频谱分析,在频域中实现了低频串扰与多路复合高频信号的分离和电能串扰频谱干扰下的多路复合信号解调,从而提升了信号传输速率与抗干扰能力。通过仿真与实验验证了该方法的正确性与有效性。

Wireless Power and Signal Parallel Transfer Technology with Multiple Signal Sources Based on Frequency Domain Demodulation

A novel parallel transfer topology for electric-field coupled wireless power and signal with a parallel-LC isolation module is proposed. In the proposed topology, most of the power crosstalks caused by the power source are isolated by the impedance characteristic of the circuit. Meanwhile, compared with existing systems, the novel system has a wider range of pass-band of the signal channel. Moreover, to enhance the signal transfer baud rate, multiple signal sources are adopted as a mixed-signal in the wider pass-band, and a spectrum analysis based on the fast Fourier transform(FFT)method is conducted to achieve the separation of low frequency crosstalk from multiple compound high frequency signals in the frequency domain. And the demodulation of multiple compound signals with the frequency spectrum crosstalk is achieved. Thus, the anti-interference ability of the system is also strengthened by using this method. The corresponding simulation and experimental results have verified the correctness and effectiveness of the proposed method. This work is supported by National Natural Science Foundation of China(No. 51477020)and National Training Program of Innovation and Entrepreneurship for Undergraduates(No. 201510611062).