Channel processing-based time-reversal method for multi-target tunable focusing

Achieving tunable focus of electromagnetic field energy at multiple target points is a critical challenge in the wireless power transfer (WPT) domain. Although techniques such as optimal constrained focusing (OCPF) and time reversal (TR) have been proposed. The former presents limited practical applicability while latter noteworthy for its adaptive spatio-temporal synchronous characteristics. However, mirror (TRM) method necessitates intricate pretesting has highly complex systems. In this study, we introduce novel channel processing method, named extraction, selection, weighting, reconstruction (CESWR), to attain balanced distribution users, characterized by low complexity, high computability, rapid convergence. Diverging from traditional TR approach, our proposed grounded correlation considerations, filters impulse response (CIR) targets, segregating them into distinct characteristic similar components each target. This ensures focused generation both receiving ends facilitating high-precision regulation peak voltage received signal. Furthermore, study embarks on rigorous examination linearity intrinsic methodology, explicating singular correspondence between tuning theoretical weights resultant outcomes. order authenticate efficacy construct single-input multiple-output time-reversal cavity (SIMO-TRC) system experimental section manuscript. Subsequent experimentation, conducted loosely tightly correlated models, furnishes invaluable insights. Evidently, model, CESWR exhibits proficiency attaining ratio (PVR) nearly 1.00 two receivers, with minuscule numerical discrepancy merely 8×10<sup>-6</sup> mV. stark contrast, under demonstrates an enhanced ability differentiate thus offering noticeable improvement over classic single-target method.