Company Creates New Power Amplifier Design in Smartphones for Greater Efficiency
November 1, 2012 9:59 PM
comment(s) - last by
The technology will first be used to address power base stations in developing countries, where diesel-powered generators consume billions of dollars of fuel per year
An MIT company has developed a new amplifier design that could significantly increase the
power efficiency of smartphones
Eta Devices, an MIT company based in Cambridge, Massachusetts, gave the power amplifier inside smartphones a much-needed efficiency boost to help save electricity consumed around the world.
The power amplifier in a smartphone turns electricity into radio signals. They use transistors to consume power in either output signal mode or standby mode. The efficiency can only be improved if the lowest amount of standby power is used, but this has been tricky so far because using low-power standby mode and suddenly jumping to high-power output signal mode leads to distorted signals. So both modes are kept high.
The amplifiers waste over 65 percent of their energy, which leads to a warm, draining battery in phones that send huge files or stream video.
More charging per day
leads to more electricity used around the globe.
But Eta Devices is looking to change this. The company's new design, called asymmetric multilevel outphasing, is an electronic gearbox that chooses through
that can be sent across a transistor and pinpoints the one that decreases power consumption the most. It does this 20 million times per second.
The new design not only does this when transmitting, but also receiving. When receiving, the gearbox sends out messages confirming when packets are received and letting the network know when they haven't. Packets are bits that make up a unit of Internet communications.
Eta Devices is looking to launch its new design in February 2013 at the Mobile World Congress. The technology will first be used to address power base stations in developing countries, where diesel-powered generators consume billions of dollars of fuel per year. From there, this new design will tackle the smartphone market around the world. It wants to create a smartphone chip with a single power amplifier that can juggle many different modes and frequencies.
Eta Devices expects that this new design can lead to smartphones using half the power they use today.
MIT Technology Review
This article is over a month old, voting and posting comments is disabled
RE: EE perspective
11/2/2012 11:56:27 AM
I was scratching my head too... the article reads like techno gibberish. Going from diesel generators to power amps to sending packets. Whaaa?
RE: EE perspective
11/2/2012 1:05:28 PM
It's a Tiffany Kaiser article. What did you expect?
She uses every opportunity to point out how bad it is to use fossil fuels. Expect the story to somehow, no matter how disconnected, have a negative view on them.
"Can anyone tell me what MobileMe is supposed to do?... So why the f*** doesn't it do that?" -- Steve Jobs
New Software Created to Estimate Battery Charge More Accurately
October 9, 2012, 8:30 PM
Nissan Talks About Leaf Battery Woes in Arizona
September 25, 2012, 8:53 AM
Reports: Snapchat is Now Worth $10B, Cofounders are Billionaires to Be
August 27, 2014, 9:30 AM
Tim Cook Says iPad Sales Have Merely Hit a Temporary “Speed Bump”
August 27, 2014, 9:16 AM
ZOTAC Announces Diminutive ZBOX PI320 pico
August 27, 2014, 9:00 AM
Verizon Wireless' VoLTE Service Tiptoes Closer to Launch
August 26, 2014, 3:21 PM
5.5” LG G3 Stylus to Make Its Debut at IFA 2014, Will Feature Budget Specs/Pricing
August 26, 2014, 9:00 AM
HTC Desire 820 to Set New High Bar for Mid-Range With Snapdragon 615
August 25, 2014, 3:07 PM
Most Popular Articles
New Photos Show “Assembled” iPhone 6, Protruding Camera Ring
August 20, 2014, 2:32 PM
Leaked Qualcomm Roadmap: 20 nm 64-bit Octacore Smartphone SoCs Cometh
August 20, 2014, 11:38 AM
Microsoft's Surface 2 Tablet Family Gets a $100 Price Cut
August 25, 2014, 1:16 AM
Report: Microsoft to Announce Windows 9 on September 30
August 21, 2014, 11:20 AM
From HULC to FORTIS: the Evolution of Lockheed Martin's Incredible Exosuit
August 22, 2014, 12:45 PM
Latest Blog Posts
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
Tesla vs. BMW: Who Has the Safer EV?
Feb 1, 2014, 2:56 PM
Justice Leaks Details of Next HTC One Two Flagship Phone
Dec 5, 2013, 4:04 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information