基于F类谐波抑制网络的紧凑型高效率倍压整流电路

Compact high efficiency voltage doubler rectifier based on class-F harmonic termination network

提出了一种用于射频能量收集(RFEH)的新型F类倍压整流电路。在该结构中,采用两种不同的谐波终端网络来抑制倍压二极管的谐波,并重塑电流波形和电压波形,从而显著提高传统倍压整流电路的功率转换效率(PCE)。为了验证该结构的可行性,制作了一个实物并进行实际测量。在输入功率为13 dBm和负载为1600Ω的条件下,测量到的PCE峰值为76.5%。此外,PCE高于50%的输入功率范围为1.8~15.5 dBm。

In this paper,a novel class-F voltage doubler rectifier is proposed for radio frequency energy harvesting(RFEH).In the proposed structure,two different harmonic termination networks are employed to block the harmonics of voltage doubler diodes and reshape current waveform and voltage waveform.Thus,the power conversion efficiency(PCE)of the conventional voltage doubler rectifier can be improved significantly.For validation,a prototype is fabricated and measured.The measured peak PCE is 76.5%with a 13 dBm input power and a 1600Ωload.Besides,the input power for PCE is higher than 50%,ranging from 1.8 to 15.5 dBm.