Quellan's QNx220 Noise Canceller Makes Tokyo Debut

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

    TOKYO, Aug. 30 /CNW/ -- 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
    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

For further information:

For further information: Melissa Kallos of Quellan, Inc.,
+1-408-774-0084,  pressrelations@quellan.com Web Site:

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