New technology that doubles the battery duration with mobile phones and smart phones appeared

ByEmarschn

In cellular phone communications, a power amplification chip (module) that converts electricity into wireless signals is used. For example, in the case of the iPhone 5, five modules are installed, but this consumes 60% of the power consumption. The same is true for base stations, 1% of the electric power used in base stations worldwide is due to this module. A new technology that solves this and doubles the duration of the battery in the past was developed by MIT experts.

Less Power-Hungry Smartphones and Base Stations Ahead: A Startup Says it's Cracked a Decades-old Efficiency Problem with Wireless Communications. | MIT Technology Review
http://www.technologyreview.com/news/506491/efficiency-breakthrough-promises-smartphones-that-use-half-the-power/


Power amplifier chips are used in mobile communications related to mobile phones, smart phones, mobile phone base stations, etc. This chip converts electricity into radio signals, but it consumes a lot of power, for example this year, the total electricity cost of mobile phone base stations around the world was 36 billion dollars (about 2.9 trillion yen) in total, The cost of this chip is 1%.

Similar waste is also happening inside the smartphone, streaming playback of the delivered movie or sending and receiving huge files causes the phone body to become hot, and the battery level will be reduced to low, but at this time, power amplification Chips consume 65% of the energy, depending on how you use it will need to charge twice a day.

"Eta Devices", a startup co-founded by Professor Joel Dawson and Professor David Perreault, who is in charge of electrical engineering at MIT, has developed a technology to solve the efficiency problem of this power amplification chip.

For now it is aiming to be on the commercial base although it is in the experimental stage, and it is expected to be cut in half by consuming it in LTE base station in 2013. When installed on a smartphone, the duration of the battery is expected to be doubled compared with the past.

"There has not been any meaningful progress in the past several years in this chip-related field," said Vanu Bose, founder of Wireless Technology Company Vanu. "Today's power amplification chip is 30 It is said to be well done if the efficiency is between 35% and 35%, but this new technology can produce more than double the efficiency, "acclaimed Dr. Dawson and Professor Perreault.

According to Professor Dawson, the current chip has two modes, the signal output mode and the standby mode, and in order to improve efficiency, it is only necessary to set the power as low as possible during standby. However, when suddenly switching from standby mode with low power to high power output mode, distortion is caused in the signal, so it seems that at the present time it keeps high power at standby. For high-speed communication, it is necessary to have high power even in standby mode, so this is why smartphones are warm.

This technology contributes not only to smartphones but also to energy saving of base stations, to be held in Barcelona in February 2013Mobile World CongressIt is expected that the real thing will be exhibited at.