Power Amp MCM Targets 3G/4G Femtocells

Nov 10, 2008 6:45 PM, MD&D Staff

A highly isolated, fully matched multichip module (MCM), the AWB7220 power amplifier from Anadigics, is the first in the company’s new line of products targeted at the 3G and 4G femtocell markets. Femtocells solve the problem of weak or nonexistent wireless broadband signals in small-office/home-office (SOHO) environments by connecting users’ mobile devices to their carrier’s network through a high-speed Internet link.

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The AWB7220 is a 4.5-V module that operates from 2.5 to 2.7 GHz, with extended operational capability between 2.3 and 2.5 GHz. Designed specifically for orthogonal frequency-division multiple access (OFDMA) waveforms such as 802.16 WiMAX, the new module delivers 28 dBm (P1dB = 35 dBm) output power with 30 dB of gain.

The module is manufactured using Anadigics’ proprietary InGaP-Plus (indium gallium phosphide) technology, which provides excellent reliability, temperature stability, and ruggedness, according to the company. The amplifier’s self-contained 7- by 7- by 1-mm surface-mount package incorporates matching networks optimized for output power, efficiency, and linearity in a 50-Ω system.

Because they are inexpensive and easy to install and operate, sales of femtocells are expected to ramp up significantly in 2009, Anadigics says. Industry analyst firm ABI Research sees the femtocell market increasing to double-digit millions in volume during 2010.