Direct Digital Predistorter for Linearization of RF Transmitter Power Amplifiers

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$498,427.00
Award Year:
2004
Program:
STTR
Phase:
Phase II
Contract:
W9113M-04-C-0081
Award Id:
69425
Agency Tracking Number:
B2-0531
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
175 Clearbrook Road, Elmsford, NY, 10523
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
103734869
Principal Investigator:
DeepnarayanGupta
Director, Research and Development
(914) 592-1190
gupta@hypres.com
Business Contact:
EdwardKulinski
VP, Finance and Administration
(914) 592-1190
ekulinski@hypres.com
Research Institute:
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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