Quellan's QNx220 Noise Canceller Makes Tokyo Debut

Quellan's QNx220 Noise Canceller Makes Tokyo Debut

August 31, 2007

Company Dramatically Improves Mobile Device Signal
Reception with RF Noise Cancelling Technology


    TOKYO, Aug. 31 /Xinhua-PRNewswire/ -- EDN Noise
Symposium -- Quellan Incorporated, today announced the
QNx220, the company's newest RF Noise Canceller for
advanced mobile communications products. Based on the
Company's patented CSP Noise Cancelling Technology, the
ultra small CMOS IC cancels unwanted RF interference to
improve receiver sensitivity.  In a weak signal area a cell
phone using the QNx220 can recover several bars of lost
signal strength and a GPS receiver can obtain a location
lock in just seconds rather than minutes.

    ( Photo: 
http://www.newscom.com/cgi-bin/prnh/20070830/AQTH127 ) 

    Specifically designed for mobile and stationary
platforms where electromagnetic noise impairs reception,
the Quellan QNx220 actively cancels interference by
inverting and electronically subtracting emulated local
noise signals from the receiver input signal. Gain and
phase of the cancellation signal are continuously adjusted
for optimum performance. This is especially effective with
closely spaced antenna radiation, internal processor noise,
and camera and display noise.

    The QNx220 complements the QNx100 with a digital
control interface for direct connection to SPI baseband
processors, and a dual stage LNA for increased noise source
sensitivity. The QNx220 is extremely small for ease of
integration, measuring under 1mm on a side.  The device is
available in a Chip Scale Package for RF modules or in a
QFN package for direct on-board use.  

    "Noise cancellation has traditionally been limited
to the audio spectrum," said Tony Stelliga, Quellan's
Chairman and CEO.  "By removing noise at the RF
antenna level in the Electromagnetic spectrum, a massive
improvement in user experience beyond audio -- including
video, signal clarity and location accuracy -- can be
achieved.  These improvements are impossible to achieve
with conventional circuitry or signal processing
techniques."

    "The Quellan approach to the evasive noise problem
is very innovative and profound, leading to an inexpensive
solution for highly-converged mobile phone systems,"
comments Kenji Tsuda, a semiconductor technology analyst
based in Tokyo.  "Quellan's Noise Cancellers will
greatly increase signal clarity even in weak-signal
environments such as underground roadways or in high rise
buildings," Tsuda continues, "Moving forward,
we'll see a wide variety of functional capabilities in a
wireless system with Quellan's Noise Cancellation, so
consumers will enjoy clear high quality calls and mobile TV
experience." 

    Quellan Incorporated is a leading developer of Analog
ICs and a pioneer in Radio Frequency noise reduction and
signal enhancement.  Quellan currently serves the cell
phone, PGP, PMP, laptop, GPS, mobile TV, and Data Center
markets.


    For more information, please contact:

     Melissa Kallos 
     Quellan, Inc.
     Tel:   [phone]
     Email: [e-mail]
     Web:  http://www.quellan.com