TY - JOUR
T1 - Highly Efficient Omnidirectional Integrated Multi-Band Wireless Energy Harvesters for Compact Sensor Nodes of Internet-of-Things
AU - Song, Chaoyun
AU - Lu, Ping
AU - Shen, Shanpu
N1 - Funding Information:
Manuscript received February 18, 2020; revised June 4, 2020; accepted July 2, 2020. Date of publication July 21, 2020; date of current version June 16, 2021. This work was supported in part by the Heriot-Watt New Faculty Grant, in part by the National Natural Science Foundation of China under Grant 51907130, in part by the Postdoctoral Science Foundation of China under Grant 20504153007, in part by the Sichuan Science and Technology Program under Grant 2020YFH0091, and in part by the Fundamental Research Funds for the Central Universities under Grant 20504153015. (Corresponding author: Ping Lu.) Chaoyun Song is with the School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, U.K. (e-mail: [email protected]).
Publisher Copyright:
© 1982-2012 IEEE.
PY - 2021/9
Y1 - 2021/9
N2 - A novel highly efficient radio-frequency (RF) energy harvester (rectenna) array with multifrequency coverages (1.7-1.8 GHz and 2.1-2.7 GHz) as well as an omnidirectional 3-D radiation pattern is presented. The harvester array is very compact and of low-profile, which strategically combines 12 single Vivaldi slot rectenna elements. More importantly, the proposed rectenna array is significantly simplified through a codesigned effective impedance tuning and array combination method to reduce the overall circuit complexity whilst maintaining high energy conversion efficiency (up to 67%) over the desired frequency band under different input powers (-25-5 dBm) and circuit loads (0.2-8 k). Having utilized the proposed wireless energy harvester array, a complete system-level demonstration of ambient RF energy-powered, a self-sustainable IoT sensor node is demonstrated for reliably operating in a typical indoor environment. Such a demonstration has never been reported before. In addition, the proposed rectenna array has novel features in terms of simplified Vivaldi rectenna matching, compact array combination and optimal beam shaping, which has proven to be an effective energy harvester in most domestic environments; therefore, having significant implications in powering small electronics for real-world Internet-of-Things (IoT) and industrial Internet-of-Things (IIoT) applications.
AB - A novel highly efficient radio-frequency (RF) energy harvester (rectenna) array with multifrequency coverages (1.7-1.8 GHz and 2.1-2.7 GHz) as well as an omnidirectional 3-D radiation pattern is presented. The harvester array is very compact and of low-profile, which strategically combines 12 single Vivaldi slot rectenna elements. More importantly, the proposed rectenna array is significantly simplified through a codesigned effective impedance tuning and array combination method to reduce the overall circuit complexity whilst maintaining high energy conversion efficiency (up to 67%) over the desired frequency band under different input powers (-25-5 dBm) and circuit loads (0.2-8 k). Having utilized the proposed wireless energy harvester array, a complete system-level demonstration of ambient RF energy-powered, a self-sustainable IoT sensor node is demonstrated for reliably operating in a typical indoor environment. Such a demonstration has never been reported before. In addition, the proposed rectenna array has novel features in terms of simplified Vivaldi rectenna matching, compact array combination and optimal beam shaping, which has proven to be an effective energy harvester in most domestic environments; therefore, having significant implications in powering small electronics for real-world Internet-of-Things (IoT) and industrial Internet-of-Things (IIoT) applications.
KW - Energy harvesting
KW - Internet of Things (IoT)
KW - radio-frequency (RF)
KW - rectenna
KW - wireless sensor nodes
UR - http://www.scopus.com/inward/record.url?scp=85112317044&partnerID=8YFLogxK
U2 - 10.1109/TIE.2020.3009586
DO - 10.1109/TIE.2020.3009586
M3 - Article
SN - 0278-0046
VL - 68
SP - 8128
EP - 8140
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 9
ER -