SiGe Amplifier Technology for High Data Rate Digital Systems

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-01-C-0158
Agency Tracking Number: 525030161
Amount: $400,000.00
Phase: Phase II
Program: STTR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
175 Clearbrook Road, Elmsford, NY, 10523
DUNS: 103734869
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Deepnarayan Gupta
 (914) 592-1190
Business Contact
 Ed Kulinski
Phone: (914) 592-1190
Research Institution
 RENSSELAER POLYTECHNIC INSTITUTE
 John F McDonald
 Dept. of Electr. Engineering
Troy, NY, 12180
 (518) 276-2919
 Nonprofit college or university
Abstract
HYPRES, in collaboration with Rennselaer Polytechnic Institute (RPI), proposes to develop a system for amplifying low-level, high-speed digital signals from superconducting electronic components at cryogenic temperatures. This will beaccomplished using high-bandwidth low-noise amplifiers (LNAs) fabricated from silicon-germanium heterojunction bipolar transistors (SiGe HBTs), which can also operate at cryogenic temperatures. This will be demonstrated using a prototype superconductinganalog-to-digital converter (ADC) that generates 1 mV digital signals at speeds up to 3 Gigabits per second. The SiGe amplifier arrays will convert these signals to standard ECL logic levels compatible with conventional electronics. The SiGe LNAs and thesuperconducting ADC will be packaged onto the first stage ( at 65 K) and the second stage (at 4 K) of a commercial closed-cycle refrigerator (cryocooler), together with appropriate high-bandwidth links optimized for this cryogenic system.BENEFITS:Superconducting electronics based on rapid-single-flux-quantum (RSFQ) logic has beendemonstrated to have considerably higher performance, in terms of speed, bandwidth,and sensitivity, than any other integrated circuit technology. This isextremely attractive for a number of Navy applications, including high-resolutionanalog-to-digital converters (ADCs) and fast digital signal processing (DSP)elements for digital receivers for future software-radio communications systems.Since these superconducting circuits work only at cryogenic temperatures of 4-5 K,we must build a link to room temperature to take advantage of these superiorproperties. This is enabled by incorporating cooled SiGe HBT amplifiers at anintermediate temperature. By integrating these together on a compact commercialcryocooler without liquid cryogens, this can be developed into a complete reliableturnkey system where the cryogenics are invisible to the end user, thus enhancingacceptance in the defense and commercial wireless communications markets.

* Information listed above is at the time of submission. *

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