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CREE RESEARCH AND MOTOROLA ANNOUNCE BREAKTHROUGH IN SILICON CARBIDE MICROWAVE DEVICES

 DURHAM, N.C., Oct. 28 /PRNewswire/ -- Cree Research, Inc.
 (NASDAQ: CREE) and Motorola, Inc. (NYSE: MOT) announced today a
 significant breakthrough in silicon carbide (SiC) microwave device
 performance with the development of SiC transistors operating at
 frequencies up to 12.9 GHz. Reaching the 10 GHz level has been a
 major objective for military-funded SiC research since 1980.
 This breakthrough is a result of a collaborative project between Cree Research, the leader in silicon carbide semiconductor technology, and Motorola, a world leader in semiconductor technology and manufacturing. The transistors are fabricated with Cree's recently announced 4H-SiC wafers, which have a higher electron mobility than the company's initial 6H-SiC wafers. Cree expects its patent for silicon carbide microwave field effect transistors to be issued in the next several months. Motorola's Phoenix Corporate Research Laboratory contributed the transistor design layout to the collaboration, as well as electron beam lithography and associated high resolution device fabrication techniques.
 High frequency transistors have been sought for many years to be used in applications where high power levels are necessary. SiC microwave devices could eventually operate at 400-500 percent higher power levels than equivalent silicon or gallium arsenide devices and may even eventually replace some electronic tubes that are used in many airborne and space-based communications systems, providing a major increase in system reliability. Potential industrial and military communications applications include cellular phone base stations, high power solid state broadcast systems for TV and radio, satellite communications stations, radar search and detection equipment, and electronic counter measure systems.
 Cree Research, which recently completed an initial public offering of common stock, is the world leader in developing and manufacturing electronic devices made from silicon carbide, a semiconductor material that is superior to other semiconductor materials for certain applications.
 Motorola is one of the world's leading providers of electronic equipment, systems, components, and services for global markets. Products include two-way radios, pagers, and telepoint systems, cellular telephones and systems, semiconductors, defense and aerospace electronics, automotive and industrial electronic equipment, computers, data communications, and information processing and handling equipment.
 -0- 10/28/93
 /CONTACT: Alan Robertson, chief financial officer, of Cree Research 919-361-5709, or FAX 919-361-4630; or Angela Hatfield, Media Relations, of Motorola, 602-952-3856, or 602-952-4067/
 (CREE MOT)


CO: Cree Research; Motorola, Inc. ST: North Carolina IN: CPR SU: PDT

SB -- CH009 -- 7810 10/28/93 10:50 EDT
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Publication:PR Newswire
Date:Oct 28, 1993
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