Topics Mobile Tech News Friday, December 15

Headlines

Contact us


Site search:
complete archives list




Site Sponsors:


Don't forget AT&T and Verizon promo codes at Sidepon.com to save money.


DOCOMO Develops 8-Band Power Amplifier for Mobile Phones
Posted: 09-Jan-2010 [Source: NTT DoCoMo R&D]

[DOCOMO's new amplifier, which offers gain and output power equivalent to those of conventional single-band amplifiers, paves the way for multi-standard mobile phones that are generally no larger than existing models.]

Tokyo -- NTT DOCOMO, INC. announced today that it has developed a prototype multi-band power amplifier that accommodates eight frequency bands between 700 MHz and 2.5 GHz, paving the way for lightweight, all-in-one mobile phones capable of standalone wireless communications of different standards, including the forthcoming extra-fast LTE standard as well as existing W-CDMA and GSM.

Power amplifiers are used in mobile phones to increase signal power up to levels required for wireless communication.

As conventional multi-band phones must employ a separate single-band amplifier for each band, the sizes of these phones will inevitably increase to accommodate new frequency bands for LTE services being launched in markets worldwide, including Japan.

DOCOMO's new amplifier, which offers gain and output power equivalent to those of conventional single-band amplifiers, paves the way for multi-standard mobile phones that are generally no larger than existing models. It enables 8-band operation by employing matching circuits whose frequency characteristics are controlled by multiple semiconductor switches according to the required frequency band.

DOCOMO will present its new amplifier at the 2010 IEEE Radio and Wireless Symposium in New Orleans, Louisiana, United States, from 10:30 AM on January 11.

More...

Back to Headlines...

Apple Watch Apple Watch

iPhone 6 and iPhone 6 Plus iPhone 6 and iPhone 6 Plus

Amazon Fire Amazon Fire

Samsung Z - Tizen Samsung Z - Tizen

LG G3 LG G3

HTC One mini 2 HTC One mini 2

OnePlus One OnePlus One

HTC One (M8) HTC One (M8)

Samsung Gear 2 Tizen Watch Samsung Gear 2 Tizen Watch

HP VoiceTab HP VoiceTab

T200 octa-core T200 octa-core

Nokia 2520 Tablet Nokia 2520 Tablet

Samsung Galaxy Round Samsung Galaxy Round

BlackBerry Z30 BlackBerry Z30

iPhone 5S and iPhone 5C iPhone 5S and iPhone 5C

Samsung Galaxy Mega Samsung Galaxy Mega

Sony SmartWatch 2 Sony SmartWatch 2

iOS 7 iOS 7

Jolla Jolla

BlackBerry Z10 BlackBerry Z10

Galaxy S 4 Galaxy S 4

Galaxy Note 8.0 Galaxy Note 8.0

Ubuntu on Tablets Ubuntu on Tablets

LG Optimus G Pro L-04E LG Optimus G Pro L-04E

Firefox OS Firefox OS

Sony Zperia Z Sony Zperia Z



 

Valid HTML 4.1!

RSS © 1999-2017 Traques LLC
All times recorded in UTC
webmaster@MobileTechNews.com