A Rectifying Circuit With High-Efficiency DC and Harmonic Generations

Rectifying circuits are key components in wireless energy harvesting (WEH) systems. In this brief, we propose a new circuit configuration that features simultaneous high-efficiency direct-current (DC) and second-harmonic (SH) generations. Based on a conventional single-series Schottky diode-based re...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2024-08, Vol.71 (8), p.3660-3664
Main Authors: Luo, Zhangjie, Chen, Yu, Tai, Junwei, Guo, Chaoyuan, Liu, Yufeng, Ma, Hui Feng, Cheng, Qiang, Jiang, Wei Xiang, Cui, Tie Jun
Format: Article
Language:English
Subjects:
Backscattering
Band-pass filters
Bandpass filter
Bandpass filters
Efficiency
Energy conversion efficiency
Energy harvesting
Harmonic analysis
Harmonic generations
high efficiency
Impedance
Power harmonic filters
rectifying circuit
Rectifying circuits
Schottky diode
Schottky diodes
second harmonic
Signal quality
Wireless communication
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Rectifying circuits are key components in wireless energy harvesting (WEH) systems. In this brief, we propose a new circuit configuration that features simultaneous high-efficiency direct-current (DC) and second-harmonic (SH) generations. Based on a conventional single-series Schottky diode-based rectifying circuit, a bandpass filter is created and innovatively connected to the anode of the diode, which serves as an effective route to output the SH component produced by the diode, yet without sacrificing the DC generation. A prototype is fabricated and measured. The results show that when the input fundamental-frequency power is 19 dBm, the DC conversion efficiency is 55.0%; more importantly, the SH power reaches 9.8 mW, corresponding to a distinctive conversion efficiency of 12.3%. This is higher than previous works without using amplifiers or other active facilities, leading to a competitive overall efficiency of 67.3%. The enhancement of SH is of great significance in improving readout distance and communication quality if it is utilized as an echo signal in backscattering communications. Therefore, this simple and low-cost circuit can find potential applications in WEH and battery-free backscattering systems.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2024.3369244