Outdoor Long-Range RF Wireless Power Transfer Test

In this outdoor long-range RF wireless power transfer test, we send wireless power enough to activate a remote sensor node located at 50 meters away from the multi-antenna power beacon.
This research is funded by the energy harvesting communications research center in Sungkyunkwan university (ERC@SKKU) ( erc.skku.edu/en... ).
This WPSN testbed is created by
Convergent IoT Systems Lab. ( ciot.skku.edu ): Arif Abdul Aziz, Lorenz Ginting, Dedi Setiawan, Jae Hyun Park, Prof. Kae Won Choi
Wireless Communications Lab. ( wireless.skku.edu ): Prof. Dong In Kim
Related papers
K. W. Choi, D. I. Kim, and M. Y. Chung, “Received Power-Based Channel Estimation for Energy Beamforming in Multiple-Antenna RF Energy Transfer System,” IEEE Trans. Signal Processing, vol. 65, no. 6, pp. 1461-1476, Mar. 2017.
K. W. Choi, L. Ginting, P. A. Rosyady, A. A. Aziz, and D. I. Kim, “Wireless-Powered Sensor Networks: How to Realize,” IEEE Trans. Wireless Commun., vol. 16, pp. 221-234, Jan. 2017.
K. W. Choi and D. I. Kim, “Stochastic Optimal Control for Wireless Powered Communication Networks,” IEEE Trans. Wireless Commun., vol. 15, pp. 686-698, Jan. 2016.
K. W. Choi, P. A. Rosyady, L. Ginting, A. A. Aziz, D. Setiawan, and D. I. Kim, "Theory and experiment for wireless-powered sensor networks: how to keep sensors alive," IEEE Trans. Wireless Commun., vol. 17, no. 1, pp. 430-444, Jan. 2018.
D. Setiawan, A. A. Aziz, D. I. Kim, and K. W. Choi, "Experiment, modeling, and analysis of wireless-powered sensor network for energy neutral power management," IEEE Systems Journal, accepted, 2017.
K. W. Choi, A. A. Aziz, D. Setiawan, N. M. Tran, L. Ginting, and D. I. Kim, "Distributed wireless power transfer system for Internet-of-Things devices," IEEE Internet of Things Journal., accepted, 2018.

[@MrHeatgap]

This is awesome why is there not more attention to this?

[@pisqua87]

The reason for this is the efficiency of the power transfer (which you can see in the lower right part of the screen) which is, unfortunately, very low...