Extending the Range of Wireless Charging

by Briton Lee

Wireless charging has been quite prominent in recent years, and the implications of the technology is obvious, bypassing the need for any physical connection to power any device with energy. However, the technology is still limited and in its early stages, and the implementation of wireless energy is highly restricted by distance, as it was when it was initially introduced in 2009 with the Palm Pre (Miller 2009). Currently, this technology is seen mostly in wireless charging mats that are only slightly more convenient than plugging in a device. However, during the 2015 Consumer Electronics Show (CES), the company Energous debuted their work on long range wireless charging, WattUp. The technology attempts to achieve the goal of never having to worry about charging devices again. While this extent of wireless charging has been introduced before, there were problems with being able to scale up the efficiency. However, Energous has come a long way since it was established in 2012 as WattUp is able to achieve over 70% efficiency (charging mats are approximately 90% efficient) (Souppouris 2015). Continue reading