Sunday, December 11, 2016
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Apple AirPods Will Miss Holiday Season
Japan Display To Receive ¥50 bil. Support From Government
Google Said to Bring Internet To Cubans
Super Mario Run Won't Play Offline
U.S. Confirms Samsung and LG Dumped Washers
Xiaomi Electric Vehicle Launch on Monday, Yeelight LED Ceiling Light Launched
Hon Hai, Sharp To Build Massive LCD TV Plant In China
U.S. To Review Cyber Attacks Beyond 2016 Election
Active Discussions
Which of these DVD media are the best, most durable?
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
Help make DVDInfoPro better with dvdinfomantis!!!
menu making
Optiarc AD-7260S review
cdrw trouble
 Home > News > Mobiles > Toshiba...
Last 7 Days News : SU MO TU WE TH FR SA All News

Monday, February 20, 2012
Toshiba Circuit Technology Increases Power Efficiency Of CMOS Amplifiers For Mobile Phones


Toshiba today announced that it has developed a circuit technology that removes distortion in wireless transmissions. The technology can be directly integrated into a CMOS radio frequency (RF) power amplifier.

The new circuit will be unveiled on February 20, 2012 at the 2012 IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco.

The various wireless communication standards deployed today use different frequency ranges, but in all of them the output radio frequency signals are amplified by power amplifiers designed for these standards.

For successful transmission to a base station, the amplitude of the signal, and therefore its power, is boosted by an RF power amplifier. As RF power amplifiers in mobile phones consume a lot of power, high efficiency is essential to extend the battery life.

The most widely used power amplifiers for mobile phones are compound semiconductors, but they are large and difficult to fabricate. CMOS could be a more compact alternative and easier to fabricate. However, CMOS power amplifiers require a distortion correction circuit that is relatively big, as it has to perform a huge number of calculations. Such a circuit is too big for integration into the power amplifier, and even for embedding into a mobile phone as a peripheral circuit.

Toshiba identified the threshold beyond which the distortion degrades the RF signal and has successfully created a simple distortion correction circuit, compact enough to be integrated into a CMOS power amplifier. Correction is applied only when the output power from the power amplifier exceeds 0.2W, the level required for communication with a relatively distant base station.

Toshiba claims that the CMOS power amplifier with the circuit improves the power efficiency by 1.4 times. It secures high level RF signal stability by correcting distortion automatically. Another advantage is the increased versatility secured by removing the need for an external correction circuit that allows simple integration into the system design of a typical mobile phone.

Toshiba will first apply the CMOS power amplifier to WCDMA devices and also aims to apply it to next-generation communications standards. Going forward, the company will develop related peripheral circuits, toward realizing even more compact, low power CMOS power amplifierse.


Previous
Next
New Sony LSIs for Mobile Communications Achieve A Data Transfer Rate of 6.3 Gbps        All News        Samsung To Spin Off LCD Business, Shift To OLED TV Technology
New Sony LSIs for Mobile Communications Achieve A Data Transfer Rate of 6.3 Gbps     Mobiles News      ZTE to Announce Two New LTE Handsets at MWC

Get RSS feed Easy Print E-Mail this Message

Related News
Toshiba Expands 3D Flash Memory Production Capacity In New Fabrication Facility at Yokkaichi
Toshiba Advances Deep Learning with Extremely Low Power Neuromorphic Processor
Toshiba's Voice Recognition Technology Can Distinguish Multiple Individual Speakers Without Training
Investors Sue Toshiba Over Accounting Scandal
Toshiba Starts Testing System For Future Self-driving Cars
Toshiba, Tohoku Electric and Iwatani Start Study of World?s Largest Hydrogen Energy System
Toshiba Introduces the Value-oriented OCZ TL100 SATA SSD Series
Toshiba Expands 24nm SLC Flash Family with 16Gb Offering
Toshiba Introduces the OCZ VX500 SATA SSD Series
Toshiba to Implement Eyefi Connected Features in Next FlashAir SD Cards
Toshiba Debuts Flashmatrix Technology
Toshiba Announces New BG SSDs with 3-Bit-Per-Cell TLC BiCS FLASH

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2016 - All rights reserved -
Privacy policy - Contact Us .