Changes in energy consumption are coming: MIT scientists will reduce it by half
About innovations in the field of iron for smartphones in general and batteries in particular at Habré, literally over the past few days, quite a few copies have been broken ( Innovations? Or Innovations! ). Yes, there has been almost no progress in terms of energy in recent years, however, it seems, everything will change soon. A group of scientists from MIT, united in the company Eta Devices , announced that she was able to find a recipe for long battery life.
Joel Dawson and David Perrault are now working on technology in laboratories, but they plan to release it to the market in 2013. Promises are great - battery life in smartphones can double, and basic LTE stations can reduce their energy consumption by half.
')
“Indeed, there has been no significant progress in this area for many years. If you get an efficiency of 30-35% of modern amplifiers, then you can rejoice. But they can more than double this figure, ”says one of the engineers.
Power amplifiers are now made with the use of transistors, which in a simplified form have a standby mode and gain. Efficiency, it is logical to assume, can be increased by reducing the power consumption in the standby mode, but at present, even in the standby mode, a sufficiently high voltage must be applied to the transistors, otherwise interference will occur when switching. To solve this problem, Eta has created a kind of electronic "gearbox". It selects the minimum suitable voltage 20 million times per second. This is called asymmetric multilevel outphasing - asymmetric multilevel dephasing.
For smartphones, this can result in a single power amplifier for use in CDMA, GSM and LTE modules. Now, for example, iPhone 5 has 5 amplifiers (in the photo they are marked with red dots).
The first products of Eta Devices will be shown at the Mobile World Congress in February in Barcelona.
Joel Dawson and David Perrault are now working on technology in laboratories, but they plan to release it to the market in 2013. Promises are great - battery life in smartphones can double, and basic LTE stations can reduce their energy consumption by half.
')
“Indeed, there has been no significant progress in this area for many years. If you get an efficiency of 30-35% of modern amplifiers, then you can rejoice. But they can more than double this figure, ”says one of the engineers.
Power amplifiers are now made with the use of transistors, which in a simplified form have a standby mode and gain. Efficiency, it is logical to assume, can be increased by reducing the power consumption in the standby mode, but at present, even in the standby mode, a sufficiently high voltage must be applied to the transistors, otherwise interference will occur when switching. To solve this problem, Eta has created a kind of electronic "gearbox". It selects the minimum suitable voltage 20 million times per second. This is called asymmetric multilevel outphasing - asymmetric multilevel dephasing.
For smartphones, this can result in a single power amplifier for use in CDMA, GSM and LTE modules. Now, for example, iPhone 5 has 5 amplifiers (in the photo they are marked with red dots).
The first products of Eta Devices will be shown at the Mobile World Congress in February in Barcelona.
Source: https://habr.com/ru/post/157131/
All Articles