Superconducting, 10 GHz, Two-Bit Digitizer for Radio Astronomy

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 22831
Amount: $599,743.00
Phase: Phase II
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Hypres, Inc.
175 Clearbrook Road, Elmsford, NY, 10523
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Sergey Rylov
 (914) 592-1190
Business Contact
Phone: () -
Research Institution
Hypres proposes to develop an ultra-sensitive 10GS/s Analog to Digital Convertor (ADC) for direct conversion of the SIS (Superconductor-Insulator-Superconductor) mixer output signals to digital data for use in radio astronomy. The observation of broadband emitters, such as cosmic dust clouds and proto-planetary objects, requires a large instantaneous bandwidth for analysis of multiple spectral lines. For these observations a sample rate of 10GS/s is desired. The 10GS/s ADC is constructed from three comparators and digital logic. HYPRES proposes to design, fabricate, and test an innovative comparator design based on Superconducting Quantum Interference Devices (SQUIDs). SQUIDS have demonstrated the energy resolution required for 2K noise thresholds at 5GHz bandwidths. The complete ADC will be fabricated using niobium which operates at 4K, is compact (1mm x 1mm), and low power ( < 1mW) making it suitable for space-based imaging arrays requiring an ADC per pixel. HYPRES has developed superconducting digital logic which can be used to crosscorrelate the ADC data at 10GS/s. The design would the follow the ADC with a 1 to N demultiplexor, this will produce N output ports at l/N of the sample rate, each port is connected to a semiconductor correlator. A second approach would implement a superconducting correlator operating at 10GS/s.

* information listed above is at the time of submission.

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