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DeepBeam: Wirelessly chargeable portable batteries through energy beamforming (July 2017 - July 2019)
Client:Project Sponsor- NSF
This system will be realized through the following research goals.
Goal 1: Real-time distributed energy beamforming. We recognize the fact that the control feedback for beamforming, albeit necessary for tuning the beams, also consumes finite energy reserves at the receiver. To address these issues, we will develop a second-generation prototype that does not require bulky ETs connected to external computers for running beamforming algorithms; rather they should be portable and stand-alone. We will also reduce the required rate of this one-bit feedback while retaining the beamforming accuracy.
Goal 2: Surface-based energy harvesting circuit: We have demonstrated that a single circuit may be sufficient to power low-power electronics. However, energy requirements of mobile phones is considerably higher. To bridge the energy gap, we will design a flat-RF energy harvesting surface where the antenna element will be embedded in the same plane, so that it forms one plate of the portable battery.
Fig. 1: Proposed multi-user energy transmission and scheduling. (a) multi-user MIMO-OFDM beamforming physical layer, (b) Processing showing SW/HW divide.