High-efficiency Rectifier for Passive RF Energy Harvesting Devices

DOI

10.2991/iceat-16.2017.74How to use a DOI?

Keywords

differential rectifier, RF-DC converter, wireless power transmission, CMOS integrated circuit

Abstract

In this paper, a highly efficient differential rectifier for passive radio frequency (RF) energy harvesting device is designed. The circuit uses the differential-drive CMOS to reduce the RF energy loss caused by the MOS threshold voltage during rectification and improve the rectification efficiency of the circuit. The circuit was fabricated with a 0.35 m CMOS process and the overall RF-DC power conversion efficiency for a DC output power of 160 W (2.5V and 64 A) is about 50%. When high voltage is needed for stimulator output, the maximum efficiency for a 4V DC voltage reaches 66.5% at -3dBm. The proposed rectifier allows the output voltage higher than 6V. It is suitable for such applications that require high RF input power such as implantable medical devices (IMDs) and passive industrial sensor.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Yuchen Wang
AU  - Xiaohong Peng
AU  - Ligang Hou
AU  - Shuqin Geng
PY  - 2016/05
DA  - 2016/05
TI  - High-efficiency Rectifier for Passive RF Energy Harvesting Devices
BT  - Proceedings of the 2016 International Conference on Engineering and Advanced Technology
PB  - Atlantis Press
SP  - 364
EP  - 369
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceat-16.2017.74
DO  - 10.2991/iceat-16.2017.74
ID  - Wang2016/05
ER  -