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Front-end modules feature three power modes

Posted: 08 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:CDMA? front-end module? power mode?

 AFEM-775x front-end modules

Avago Technologies has released two new front-end modules (FEMs) that incorporate a power amplifier (PA), duplexer, band-pass filter and coupler to improve efficiency and extend talk time in mobile handsets.

The AFEM-775x series includes Avago's CoolPAM and film bulk acoustic resonator (FBAR) technologies to improve performance in CDMA cell band and dual-band handsets, wireless PDAs and wireless data cards.

The AFEM-775x series are fully matched CDMA FEMs, which are designed to minimize power consumption with three power modes (high power, mid-power and bypass modes). Additionally, the CoolPAM-V technology incorporated in these modules does not require a DC/DC converter, which helps save cost and space in handset designs. Moreover, the PA is manufactured based on advanced hetero-junction bipolar transistor (InGaP HBT) technology which offers reliability and ruggedness.

Avago's AFEM-7758 is an FBAR-based duplexer that provides low insertion and outstanding isolation to minimize Tx leakage in both Rx and Tx bands over a wide temperature range. It also improves handset receiver sensitivity and single tone desensitization performance. Moreover, the optimized matching between the PA and duplexer eliminates the need for a bulky and costly isolator.

The AFEM-775x FEMs come in 4mm x 7mm 1.1mm SMT package.

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