Science Daily August 30, 2021
An international team of researchers (Japan, USA – University of Michigan) has shown that multimode quasistatic cavity resonance can provide room-scale wireless power transfer. The approach uses multidirectional, widely distributed currents on conductive surfaces that are placed around the target volume. It generates multiple, mutually unique, three-dimensional magnetic field patterns. They demonstrated the technology in a purpose-built aluminum test room measuring approximately 10 feet by 10 feet. They wirelessly powered lamps, fans and cell phones that could draw current from anywhere in the room regardless of the placement of people and furniture. Devices harness the magnetic field with wire coils, which can be integrated into electronics like cell phones. According to the researchers the system could easily be scaled up to larger structures like factories or warehouses while still meeting existing safety guidelines for exposure to electromagnetic fields…read more. TECHNICAL ARTICLEÂ
Overview of M-QSCR. Credit: Nature Electronics (2021)