A Selective, Tracking, and Power Adaptive Far-Field Wireless Power Transfer System

Analysis and Experiment on Multi-Antenna-to-Multi-Antenna RF Wireless Power Transfer

“…For example, the retrodirective antenna arrays have been proposed in [7] and [8], and the beam synthesis for achieving the maximum efficiency is studied in [9]. Some works have demonstrated the multi-antennato-multi-antenna RF WPT system for charging low-power devices (e.g., [10]- [12]). Main focus of these works is the demonstration of the full-fledged RF WPT systems including the RF and control circuits as well as tracking algorithms, but they do not give in-depth investigation into the working principle behind RF WPT.…”

Implementation Challenges and Opportunities in Beyond-5G and 6G Communication

“…The secret ingredient here is to try to create focus of energy rather than beams of energy, and thus be able to optimize the energy transmission between the transmitter and the receiver, while managing interference toward other devices and co-located systems. In [78], a solution was developed to track IoT autonomous sensors, and to focus energy on those sensors. Fig.…”

Challenges in Resource-Constrained IoT Devices: Energy and Communication as Critical Success Factors for Future IoT Deployment

“…The main drawback of these techniques is that all of them require the receiver to have RF, and sometimes, computing capabilities which are not feasible for a large number of applications. The solution that has been proposed in this topic is the implementation of WUR [ 63 ]. As this technique can serve this and others purposes, it is further detailed in Section 3 .…”