New Technology Could Double Smartphone Battery Life

A team of researchers at a startup called Eta Devices have purportedly found a way to reduce smartphone battery consumption by half.

A power amplifier is one of the more wasteful power consumption components of a smartphone's battery. It's a chip that's utilized to convert electricity into radio signals, as well as to maintain a device's connection to a wireless network.

Power amplifiers waste around 65 percent of a handset's battery power and also cause a smartphone to heat up when a user streams a video or uploads large files.

Eta Devices, however, has redesigned the power amplifier by making use of technology dubbed "asymmetric multilevel outphasing". It selects the minimum voltage required to maintain a connection, and updates around 20 million times per second in order to deliver the highest efficiency.

The group behind the firm is currently developing the new power amplifier technology for cellular base stations, which also suffer from similar power consumption issues. The new chips are scheduled to be shipped sometime during 2013.

The startup firm said its plans for creating a single power amplifier chip could lead an energy efficiency revolution on smartphones. The technology behind the new power amplifiers would ensure smartphone batteries would last twice as long as they normally would. The chip would also make it possible to implement the amplifier in CPU and display technologies.


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  • techcurious
    I am not convinced by 50% savings claim.. that is if everything else in the smartphone is the same except that.. unless they are talking about stand-by time or talk time while the screen is off..
    It is my assumption that during active use, the Screen is one of the bigger power drains on a smartphone. So between the screen, the processor, memory and the Power Amplifier, the power amplifier uses the lions share of your battery at about 65%? If that were the case, then why did older phones from 6 years ago that also had WiFi etc last at least 3 times longer than current smart phones?
    My assumptions could be wrong of course..
    Oh, unless they are also planning to combine the inevitable improvements in screen, processor and memory power efficiencies, in 12 months, with the improvements they offer and then say "See! We were right, your phone now lasts twice as long!"
    15
  • derekullo
    Old Technology Could Halve Smartphone Battery Life
    10
  • Other Comments
  • derekullo
    Old Technology Could Halve Smartphone Battery Life
    10
  • cats_Paw
    As far as i know, a battery could fuel a Laptop for a month with todays top notch technology. Its just too expensive, and the probability of failure is higher, so that "1 year warranty" would increase costs for companies.

    Its a bit sad, since having a "mobile device" is little to no use if you must have a power source each 10 hours of use.
    3
  • techcurious
    I am not convinced by 50% savings claim.. that is if everything else in the smartphone is the same except that.. unless they are talking about stand-by time or talk time while the screen is off..
    It is my assumption that during active use, the Screen is one of the bigger power drains on a smartphone. So between the screen, the processor, memory and the Power Amplifier, the power amplifier uses the lions share of your battery at about 65%? If that were the case, then why did older phones from 6 years ago that also had WiFi etc last at least 3 times longer than current smart phones?
    My assumptions could be wrong of course..
    Oh, unless they are also planning to combine the inevitable improvements in screen, processor and memory power efficiencies, in 12 months, with the improvements they offer and then say "See! We were right, your phone now lasts twice as long!"
    15