wireless power transfer tagged posts

Engineers use Radiation Suppression to Develop Better Wireless Charging

Going the distance for better wireless charging
Two loop antennas (radius: 3.6 centimeters) can transfer power between each other from 18 centimeters apart. Credit: Nam Ha-Van/Aalto University

A better way to wirelessly charge over long distances has been developed at Aalto University. Engineers have optimized the way antennas transmitting and receiving power interact with each other, making use of the phenomenon of “radiation suppression.” The result is a better theoretical understanding of wireless power transfer compared to the conventional inductive approach, a significant advancement in the field.

Charging over short distances, such as through induction pads, uses magnetic near fields to transfer power with high efficiency, but at longer distances the efficiency dramatically drops...

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