Running out of battery on his smartphone led Mattias Åström to think about how to develop a more efficient power amplifier for the mobile communications industry. Åström set up Eta Devices, and says the breakthrough technology his team developed is bringing energy savings to people and the planet.

Author: Mattias Åström is the CEO of Eta Devices.

Image: Guests use their mobile devices during a presentation. REUTERS/Stefan Wermuth.