femtocells industry
Anadigics attacks the femtocell market with BiFET power amplifiers
The emergence of 4G smartphones is placing a tremendous strain on mobile carriers. But this can be relieved by adding femtocells to the network that are built around customized high performance power amplifiers, such as the portfolio of products being unveiled by Anadigics, argues the company’s Joe Cozzarelli.
S
martphones such as the Samsung Epic 4G and the Apple iPhone are spawning a new generation
of gadget lovers. Armed with such a device, it is possible to dip in and out of a vast array of applications while socially networking any time, anywhere.
Thanks to these alluring attributes, smartphone sales are rocketing, and now account for one-fifth of all handset purchases. The owners of these cutting-edge devices are exchanging more and more data as time goes by, so it is not surprising that mobile operator networks are creaking under increasing strain.
Today’s networks are built around a traditional infrastructure
model, which involves blanket deployment of macrocells to a geographic area. Any gaps that the macrocells cannot cover are filled with microcells. Regardless of the local cell technology, calls tend to be routed to their destinations through either terrestrial T1 lines or microwave backhaul, which are typically leased by the network operator.
However, even with this extensive and costly infrastructure in place, many people have either poor or no coverage in their homes and offices. Small cell solutions offer significant relief to this problem.
Complementing today’s networks with small cells, and femtocells in particular, is the best way forward from both an economic and quality-of-service perspective. By placing coverage exactly where it’s needed, the mobile operators will be able to keep pace with the growing customer demand and redirect backhaul traffic to the user’s internet. Imagine a network where the user’s sessions are almost always open. These cells are an attractive option for both upgrading the existing 3G network infrastructure and for deploying 4G. By adding hundreds of thousands of small local cell sites, users will enjoy great coverage in their homes, shops or businesses.
Left: This May Anadigics introduced its first two power amplifier
modules for the femtocell market. These single-ended amplifiers feature InGaP- based HBTs and produce an average power of 24.5 dBm
October 2010
www.compoundsemiconductor.net 17
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