Direct Digitization at RF

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N0017803C1030
Agency Tracking Number: 022-0177
Amount: $69,331.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Hypres., Inc.
175 Clearbrook Road, Elmsford, NY, 10523
DUNS: 103734869
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Steven Kaplan
 Senior Scientist
 (914) 592-1190
 kaplan@hypres.com
Business Contact
 Edward Kulinski
Title: Vice President and Contro
Phone: (914) 592-1190
Email: ekulinski@hypres.com
Research Institution
N/A
Abstract
"Analog components in RF receivers can add noise and distortion, thereby degrading system performance. Mismatching of analog components can contribute to spurious signals in I&Q receivers and beamforming arrays. Elimination of amplifiers and analogdownconversion mixers can be accomplished by moving the analog-to-digital converter (ADC) up to the antenna. In such "digital-RF" systems, sampling is performed at higher rates than the carrier frequency, and downconversion is accomplished with digitalmixers. HYPRES is pursuing digital-RF applications using high-resolution ADCs fabricated with Niobium superconducting chips operating with a conventional semiconductor interface. Our goal is to achieve a wideband digital receiver with a center frequency of~2 GHz for application to commercial communications as well as military multifunction requirements. For Phase I, HYPRES will collaborate with V-Corp to develop a conceptual design for a digital-RF receiver with a 400-MHz input bandwidth. We willinvestigate how HYPRES' strengths in high-oversampling ADCs can be applied to V-Corp's methods of digital signal processing (DSP) to combine the output of multiple ADCs. Our goal in Phase II will be to apply the Phase I design to exceed MDA's 85-dB SFDRand 75-dB SNR specifications. Superconducting technology has already exceeded SFDR levels of -85 dBc at 10-MHz input bandwidth. The inherent linearity of superconducting front ends and the high-speed capa

* information listed above is at the time of submission.

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