Cooperative Integration of RF Energy Harvesting and Dedicated WPT for Wireless Sensor Networks

With an advance of semiconductor technology, RF energy harvested from ambient becomes more and more promise to facilitate low-power electronics. However, such energy is too low to activate a high-power module, constraining its widespread in wireless sensor networks (WSNs). To embed an ambient energy...

Full description

Saved in:
Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 29; no. 4; pp. 291 - 293
Main Authors Zhang, Hao, Guo, Yong-xin, Zhong, Zheng, Wu, Wen
Format Journal Article
LanguageEnglish
Published IEEE 01.04.2019
Subjects
Ambient energy harvesting
Bluetooth
circulator
Circulators
Energy harvesting
Radio frequency
Schottky diodes
Voltage measurement
wireless power transfer (WPT)
Wireless sensor networks
wireless sensor networks (WSNs)
Online AccessGet full text

Cover

More Information
Summary:With an advance of semiconductor technology, RF energy harvested from ambient becomes more and more promise to facilitate low-power electronics. However, such energy is too low to activate a high-power module, constraining its widespread in wireless sensor networks (WSNs). To embed an ambient energy harvesting into WSNs, its cooperative integration with a dedicated wireless power transfer (WPT) is proposed. Therefore, low-power electronics can be sustained by ambient energy, while high-power modules can be activated by the dedicated WPT. A low-threshold rectifier is exploited to capture and rectify all matched ambient energy, while reflecting almost unmatched dedicated incidence. A low-loss and small-size circulator is employed to channel the two various energy flows, enabling a compact rectenna. The proposed integration is theoretically analyzed and experimentally validated, which is suitable for WSNs applications.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2019.2902047