论文标题
无线电源传输的RC滤波器设计：傅立叶系列方法
RC Filter Design for Wireless Power Transfer: A Fourier Series Approach
论文作者
论文摘要
在这封信中，我们研究了低通电阻器（RC）过滤器对射频（RF）无线电源传递（WPT）的影响。 RC滤波器通过去除谐波以及整流器输出处的旋转电压来影响RF带宽。特别是，一个大的（小）RC时间常数会减小（增加）纹波，但会减小（增强）直流（DC）分量。通过遵循傅立叶系列方法，我们获得了整流器输出电压，RC滤波器的输出以及直流电压的闭合形式表达式。我们的分析框架提供了RC过滤器对WPT性能的影响的完整表征。我们表明，这个完整且可进行的分析框架适用于WPT系统中RC滤波器的正确设计。
In this letter, we study the impact of the low-pass resistor-capacitor (RC) filter on radio frequency (RF) wireless power transfer (WPT). The RC filter influences both the RF bandwidth by removing the harmonics as well as the ripple voltage at the output of the rectifier. In particular, a large (small) RC time constant, reduces (increases) the ripple but decreases (enhances) the direct-current (DC) component. By following a Fourier series approach, we obtain closed-form expressions for the rectifier's output voltage, the RC filter's output as well as the DC voltage. Our analytical framework provides a complete characterization of the RC filter's impact on the WPT performance. We show that this complete and tractable analytical framework is suitable for the proper design of the RC filter in WPT systems.
