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To: Zeev Hed who wrote (28792)	9/7/1999 3:48:00 AM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi Zeev; Regarding the Hypres and those 70GHz circuits. The profile of the company mentions 650 GHz demonstrated in the laboratory. Do you suppose that when they mention that they are working on high resolution (16 effective bits and higher with over 10 MHz of input BW) digitizers. ( hypres.com ) that they have possibly dropped three orders of magnitude, and actually meant to say that they are working on 10 GHz digitizers? It doesn't seem that they would be likely to screw up their own profile... Their technology is not pie in the sky, their web site shows several commercial products already available and for sale. As an example, here is Hypres's "High-Gain Wide-Band Amplifier Module" specification: Interface from RSFQ Superconducting Logic to TTL and ECL systems Wide Bandwidth - DC to 35 MHz hypres.com Note that 35MHz is three orders of magnitude slower than the 70GHz figure you quoted. Their ECL probes do a little better: Bandwidth: > 1 GHz hypres.com but still this is two orders of magnitude slower than the 70GHz. This is kind of unfair, but their SQUID is limited too: Standard Bandwidth = 2 MHz (5 MHz option) hypres.com The last product is a shield degausser, but it is entirely non superconducting, and runs at 5 to 50Hz: hypres.com Zeev, do you have an explanation as to why Hypres's process could be so fast, but their products be so slow? If so, lets hear it. -- Carl