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Technology Stocks : Wolf speed

WOLF 17.95

-3.8%

Nov 7 9:30 AM EST

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To: James Hutton who wrote (2292)	2/26/2000 11:28:00 AM
From: John Walliker	Read Replies (2) of 10713

jonathan, Are the superconducting products competitors of CREE's wireless products? No. They are complementary. CREE are developing high frequency high power transistors which can run at much higher temperatures than silicon or gallium arsenide devices. CDTS use the superconducting properties of certain materials at low temperatures to make filters with very low losses and very sharp cutoffs. This minimises the need to leave gaps between the frequencies of adjacent base stations and helps in channel re-use. The need for such gaps at present is caused by the fact that perfect filters are very difficult to make and there is some leakage of unwanted frequencies into the base station receivers. This then reduces their sensitivity to the wanted signals. John

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