Friday, September 04, 2015
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Report Reveals the Web's Shadiest Neighborhoods
Google Play Is Coming Back To China: report
Hackers Stole Data From Bugzilla
BlackBerry To Buy Rival Good Technology
GIGABYTE Z170X-UD5 Motherboard Is Intel Thunderbolt 3 Certified
LG Bets On OLED's Success, Showcases Innovative Prototypes At IFA2015
Acer's Predator 6 Smartphone Packs A 10-core Processor
New Intuos Tablets Bring Your Creative Dreams Closer
Active Discussions
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
How to burn a backup copy of The Frozen Throne
Help make DVDInfoPro better with dvdinfomantis!!!
Copied dvd's say blank in computer only
menu making
Optiarc AD-7260S review
 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's New PCs Combine Functionality, Mobility and Performance
Toshiba At IFA 2015
Toshiba Launches Wireless Power Receiver IC for Quick Charging Mobile Devices
Toshiba Unveils Three NVME Solid State Drive Families
Toshiba Develops First 16-die Stacked NAND Flash Memory with TSV Technology
Toshiba Announces Third Generation of Enterprise SAS SSDs, Starts Production Of 3D NAND
Toshiba Expands Line-up of ARM Cortex -M-based Microcontrollers
Toshiba CEO Resigns Following Accounting Scandal
Toshiba Inflated Profits
Toshiba Moves To New Process Technologies for Microcontrollers and Wireless Communication ICs
Toshiba Demonstrates New Technology For 3D Hard Disks
Toshiba Announces 6TB Enterprise Cloud HDD

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2015 - All rights reserved -
Privacy policy - Contact Us .