Efficient Microwave Wireless Power Transmission using Optimization Algorithm

In this study, we developed an efficient microwave wireless power transmission (MPT) system for multiple receivers using an optimization (OPT) technique. The optimization algorithm finds the optimal transmission signal for transferring the desired power to multiple receivers with maximum power transfer efficiency (PTE). We designed a 5 × 5 rectangular patch array antenna and patch element antenna operating at 10 GHz as the transmitter and receiver, respectively. The operating process of the MPT system using the OPT technique is analyzed. Additionally, we compared the received power of each receiver and the PTE of the OPT technique with that of the multi-receiver time-reversal (MR-TR) technique considering various scenarios. The OPT algorithm generates a multibeam to charge multiple receiver simultaneously. We validated that the OPT technique can deliver power to receivers precisely at desired ratios with greater PTE than that of the MR-TR technique in an MPT system.