PROXIM/RAYTHEON PARTNERSHIP YIELDS SUPERIOR GALLIUM ARSENIDE INTEGRATED
CIRCUIT FOR WIRELESS PCMCIA-BASED NETWORKING PRODUCTS

Low Power, Small Form Factor Proxim PX240 GaAs Chip Enhances Products
Designed For Mobile Wireless Computing Market

MOUNTAIN VIEW, Calif, Sept. 20, 1993 -- Proxim, Inc., the leading supplier
of spread spectrum wireless networking products, and Raytheon Company, a
global technology leader, announced today the completion of a joint
development effort that began in early 1992 and has resulted in the
production by Raytheon of a highly integrated, low power gallium arsenide
(GaAs) chip for use in Proxim's existing and future wireless
PCMCIA(Personal Computer Memory Card International) based networking
products.

The Proxim PX240 is a single GaAs chip measuring 2mm x 2mm which provides
all the microwave front end functions for wireless local area networking
products. The GaAs chip was designed specifically for applications
requiring small size, low power consumption, cost-effective wireless
networking solutions. The chip will initially be used in Proxim's
RangeLAN2/PCMCIA wireless LAN adapters designed for the mobile computing
market.

"The result of our work with Raytheon is a new chip that will allow
Proxim's products for the wireless mobile computing market to set new
standards in power requirements, size and wireless network transmission
range," said David King, president and CEO of Proxim. "The announcement of
this new IC is yet another example of Proxim's long-term commitment to
advancing the state-of-the-art in PCMCIA-based wireless networking and
maintaining market leadership through cost-effective technical
innovation."

"The joint Raytheon/Proxim gallium arsenide engineering effort represents a
significant milestone in the personal computer industry," said Doug Maki,
manager of wireless products at Raytheon. "Our goals from the onset were
set very high; extremely low battery current in a very small package. By
working closely with Proxim we were able to-focus in system architecture
and IC performance and limitation issues to obtain a cost-effective,
high-performance RF frond-end. The result is a GaAs IC that will set the
standard for all wireless LAN products."

Power consumption of peripheral devices designed for mobile computers are
of critical importance to system vendors and users. The PX240 has a total
current drain in the receive mode of 12mA, less than any existing or
proposed processor designed for similar purposes.

Raytheon's extensive experience in integrated GaAs transmitters and
receivers uniquely positioned the company to work with Proxim in the
development of a complete transceiver solution. Raytheon utilized its
Enhancement/Depletion (E/D) Field Effect Transistor (FET) process,
developed at Raytheon's Advanced Device Center (ADC) in Andover, Mass., to
achieve the PX240 small size and low power consumption specifications. 

Proxim Wireless Networking Product Family

In June 1993, Proxim introduced RangeLAN2, a family of high performance
wireless systems designed for the LAN market. Based on frequency hopping
spread spectrum technology in the 2.4-2.483 GHz band, RangeLAN2 offers the
longest range and lowest power consumption of any wireless LAN product in
its class. RangeLAN2 delivers an uncompressed data rate of 1.6 Mbps per
channel up to 10 independent channels. RangeLAN2's data rate exceeds the
performance requirements of most standard PC applications, making it an
ideal wireless system for high speed LAN environments. The RangeLAN2
family includes RangeLAN2/PCMCIA for mobile computers, RangeLAN2/ISA for
desktop PCs and servers, and RangeLAN2/Bridge for plug-and-play network
access to standard wired LAN environments.

Proxim's original award-winning RangeLAN family of products, which began
shipping in early 1992, is designed for less data-intensive LAN
applications such as E-mail, printer-sharing and file transfer, as well as
many industry-specific mobile computing applications. Operating at a data
rate of 242 Kbps per channel across three independent channels, the
original RangeLAN family has a range of 300-500 feet in normal office
environments and 800-1000 feet in outdoor or open space environments. The
RangeLAN family includes RangeLAN/PCMCIA for portable computers,
RangeLAN/ISA for desktop PCs and servers, RangeLAN/LT for Compaq
Computer's Contura and LTE notebook computers, RangeLAN/Parallel for
connection to the parallel port of any PC, and RangeLAN/Roaming, which
allows mobile computer users to automatically switch from access point to
access point within a Novell network.

Raytheon, headquartered in Lexington, Mass., is a nine billion dollar,
international technological company with sales in four business segments:
electronics, aircraft products, energy and environmental products, and
major appliances. Drawing on its military microwave radio and
semiconductor/IC strengths, Raytheon has targeted commercial communication
products as a major focus area for the company. As part of this thrust,
the company is developing and producing GaAs and Si BiCMOS integrated
circuits for a range of advanced communications products. Prominent among
these are the GaAs Direct Broadcast Satellite receivers, manufactured at
ADC. Raytheon is currently shipping these advanced products in quantities
of 50,000 per month.

Founded in 1 984, Proxim, Inc., headquartered in Mountain View, Calif, is
the world's leading supplier of spread spectrum wireless networking
products for end users, systems integrators, VARs and OEMs. The company
designs, manufactures and markets an industry leading family of
off-the-shelf wireless LAN adapters for desktop and portable systems, as
well as spread spectrum radio modules and wireless RF modems for custom
applications. To date, Proxim has shipped over 50;000 spread spectrum
radio products.

Proxim, Inc. 295 North Bernardo Ave, Mountain View, CA 94043
(415) 960-1630,   Fax: (415) 964-5181

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