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RF Micro Devices Announces Revolutionary Direct Conversion Modulator for Multi-Mode Handsets.


Business Editors/High Tech Writers

GREENSBORO, N.C.--(BUSINESS WIRE)--Jan. 22, 2001

New RF2483 IC Features Very Low Noise,

Eliminating The Need For Filters

RF Micro Devices RF Micro Devices (NASDAQ: RFMD) is a manufacturer of integrated circuits, founded in Greensboro, NC, in 1991 by William J. Pratt, Powell T. Seymour and Jerry D. Neal.[1]. , Inc. (Nasdaq: RFMD RFMD RF Micro Devices (NASDAQ)
RFMD Rotary Fluid Management Device
), a leading provider of proprietary radio frequency integrated circuits (RFICs) for wireless communications applications, announced today, the availability of the RF2483, a revolutionary multi-band direct quadrature modulator IC.

Featuring a very low noise floor and the inclusion of gain control, the RF2483 is the first of several products planned by RFMD aimed at fulfilling direct conversion radio architectures.

"The development of the RF2483 represents a significant milestone in realizing cost-effective, multi-mode handsets, base stations and other wireless devices," said Alastair Upton, RFMD(R) director of digital cellular products. "By eliminating all intermediate frequencies, the direct-modulator approach significantly reduces the transmit architecture complexity, allowing for multi-mode, multi-standard operation with virtually no RF filters. The RF2483's very low noise performance enables the designer to eliminate the RF duplex filter, which is critical in reducing power consumption and cost. We plan to incorporate this novel design approach into all our future chip sets, including CDMA (Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology from QUALCOMM that operates in the 800 MHz band and 1.9 GHz PCS band. , W-CDMA See WCDMA. , GSM, TDMA (Time Division Multiple Access) A satellite and cellular phone technology that interleaves multiple digital signals onto a single high-speed channel. For cellular, TDMA triples the capacity of the original analog method (FDMA). , EDGE and other such combinations," said Upton.

"The key to the RF2483 is its very low noise floor performance of -157 dBm/Hz at 20 MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc.  offset," said Brent Wilkins, RFMD marketing manager for digital cellular products. "Such a low noise floor allows for the elimination of filters, which results in lower power consumption and savings in both cost and board area. RFMD's proprietary design approach helps achieve an extremely high level of performance, and represents the best-in-class for this type of component."

In addition to low noise, the RF2483 exhibits carrier and sideband sideband, any frequency component of a modulated carrier wave other than the frequency of the carrier wave itself, i.e., any frequency added to the carrier as a result of modulation; sidebands carry the actual information while the carrier contributes none at all.  suppression, typically greater than 40 dBc at maximum gain, while maintaining 50 MHz input bandwidth and output IP3 of +19 dBm. The device has a 35 dB gain control function, which helps the systems designer manage gain, noise and distortion budgets in the transmit path. Other features include a 2.7V power supply and 700-1000/1700-2200 MHz output frequency range.

The RF2483 is the third product announcement in RFMD's growing portfolio of SiGe HBT HBT Heterojunction Bipolar Transistor
HBT HyCult Biotechnology (Uden, The Netherlands)
HBT Hanbury-Brown-Twiss (interferometer)
HBT Herring Bone Twill
HBT Heflex Bioengineering Test
 products for wireless applications. Samples and fully assembled evaluation boards are available immediately from RFMD. Production quantities will be ready for shipment in the second half of 2001.

For a complete listing of RFMD products and services, refer to the company's Designer's Handbook. Free copies in print or CD-ROM CD-ROM: see compact disc.
CD-ROM
 in full compact disc read-only memory

Type of computer storage medium that is read optically (e.g., by a laser).
 format are available directly from RFMD by calling 336.664.1233, extension 6655, or sending an e-mail request to jmcrae@rfmd.com .

RF Micro Devices, Inc., an ISO (1) See ISO speed.

(2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI.
 9001-certified manufacturer, designs, develops, manufactures and markets proprietary RFICs for wireless communications applications such as cellular and PCS (1) (Personal Communications Services) Refers to wireless services that emerged after the U.S. government auctioned commercial licenses in 1994 and 1995. This radio spectrum in the 1.  phones, cordless phones, wireless LANs, wireless local loop handsets, industrial radios, wireless security systems and remote meter readers. The company offers a broad array of products -- including amplifiers, mixers, modulators/demodulators, and single-chip receivers, transmitters and transceivers -- representing a substantial majority of the RFICs required in wireless subscriber equipment. The company's strategy is to focus on wireless markets by offering a broad range of standard and custom-designed RFICs in order to position itself as a "one-stop" solution for its customers' RFIC RFIC Radio Frequency Integrated Circuit
RFIC Radio Frequency Interface Chip
 needs. In the September 4, 2000 issue of FORTUNE magazine, RF Micro Devices was ranked second among FORTUNE's "100 Fastest Growing Companies." RF Micro Devices, Inc. is traded on the Nasdaq National Market under the symbol RFMD.

This press release contains forward-looking statements relating to the company's plans, objectives and estimates. The company's business is subject to numerous risks and uncertainties, including fluctuations in operating results and market growth rates, wafer fabrication risks, management of growth and production yield variability. These and other risks, which are described in the company's annual report and other filings with the SEC, could cause actual results to be materially different from those expressed or implied by these statements.

RF MICRO DEVICES(R) and RFMD(R) are trademarks of RF Micro Devices, Inc.

For further information about RFMD or the new RF2483, please visit our web site at http://www.rfmd.com .

Product photography available upon request - please contact Angie Finney at 336.664.1233, extension 6652.
COPYRIGHT 2001 Business Wire
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Publication:Business Wire
Geographic Code:1USA
Date:Jan 22, 2001
Words:692
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