Direct Digital Predistorter for Linearization of RF Transmitter Power Amplifiers

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: W9113M-04-C-0081
Agency Tracking Number: B2-0531
Amount: $498,427.00
Phase: Phase II
Program: STTR
Awards Year: 2004
Solicitation Year: 2002
Solicitation Topic Code: BMDO02T-00
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
 Deepnarayan Gupta
 Director, Research and Development
 (914) 592-1190
 gupta@hypres.com
Business Contact
 Edward Kulinski
Title: VP, Finance and Administration
Phone: (914) 592-1190
Email: ekulinski@hypres.com
Research Institution
 University of Rochester
 Donna Beyea
 ORPA,
Rochester, NY, 14627
 (585) 275-4031
 Nonprofit college or university
Abstract
HYPRES, in collaboration with University of Rochester, proposes to develop a novel RF transmitter architecture that extends digital signal processing into the RF domain. This "digital-RF" approach permits high-fidelity synthesis of broadband multi-carrier transmit waveforms, without the distortions associated with analog components. Most major signal processing operations, including up-conversion and initial stages of amplification, will be carried out in the digital domain, moving the digital-to-analog boundary as close as possible to the antenna. Furthermore, this will incorporate broadband digital predistortion correction for any remaining non-idealities in the transmission chain. At the low-power end, only superconducting electronics technology has the necessary speed, linearity, and precision for this digital-RF architecture. This will be supplemented by fast semiconductor switching amplifiers, which will dramatically improve the power-efficiency of the transmitter, while preserving a very high signal-to-noise ratio. Building on the successes of the Phase I project, HYPRES proposes to design, fabricate, and demonstrate the necessary digital-RF hardware using superconducting rapid-single-flux-quantum (RSFQ) integrated circuits. Further, we will develop digital-RF transmitter architectures for specific communications and phased-array radar systems relevant to defense applications. This will lead to the development and commercialization of a line of digital-RF transceiver products for the military and the commercial markets.

* information listed above is at the time of submission.

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