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Power amp suits 3G handsets for W-CDMA network

Posted: 28 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:linear power amplifier? 3G? W-CDMA handset?


Anadigics Inc. has released the AWT6281 HELP3 W-CDMA linear power amplifier (PA) engineered specifically for use in advanced 3G handsets for EGSM (Band 8) UMTS wireless networks.

The new power amplifier extends the operating time of 3G handsets and data cards, which is critical for successful operation using high speed packet access (HSPA) networks.

The latest member of Anadigics' family of 3G HELP3 W-CDMA linear PAs, the AWT6281 provides full compliance with HSDPA and HSUPA requirements and reduces average current consumption by 75 percent compared to competing devices. The PA provides exceptionally low quiescent currents of 7mA without a DC/DC converter and eliminates the need for an external voltage regulator. The self-contained 4mm x 4mm x 1.1mm surface mount package incorporates matching networks optimized for output power, efficiency and linearity. The AWT6281's superior performance and integration capabilities are achieved using Anadigics' InGaP-Plus technology, which combines bipolar and FET devices on the same GaAs die.

Engineered specifically for UMTS900 operation, the AWT6281 enables manufacturers to design and develop the advanced 3G handsets and data cards required for successful conversion to UMTS900 worldwide. A market study done for the GSM Association by Ovum Consulting found that "UMTS900 provides between 44 percent (in urban areas) and 119 percent (rural areas) increased coverage per Node-B compared with UMTS2100. This is primarily due to the propagation characteristics of the lower frequency band and leads directly to lower capex and increased mobility benefits, providing a new option, with greater service capability, for operators... Handset availability is crucial to the successful rollout of UMTS900 as the market will need to be populated with handsets which will work in the UMTS900 band and in other GSM and UMTS bands also."

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