Eta Devices power amplifiers
Doubling battery life for smartphones could be just a power-amplifier chip away. Eta Devices, run by two MIT professors, is expected to commercialize its energy saving technology in 2013, halving the energy phones eat up when transmitting data. It calls the technology asymmetric multilevel outphasing, which keeps standby power as low as possible and thereby extends battery life. Power amplifier chips are needed for each wireless technology a phone supports (in color boxes in the photo), and Eta Devices plans to support CDMA, GSM, and 4G/LTE in both phones as well as the cellular ground stations they communicate with.