Digital Predistortion at RF using Superconductor Electronics

Award Information
Agency: Department of Defense
Branch: Army
Contract: W15P7T-04-C-K417
Agency Tracking Number: A032-1757
Amount: $139,890.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solicitation Year: 2003
Solicitation Topic Code: A03-118
Solicitation Number: 2003.2
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
 VP Research and Developme
 (914) 592-1190
 gupta@hypres.com
Business Contact
 Edward Kulinski
Title: VP Finance & Administrati
Phone: (914) 592-1190
Email: ekulinski@hypres.com
Research Institution
N/A
Abstract
HYPRES proposes to develop an RF-in-RF-out linearizer module that can be easily incorporated into existing radio systems for direct predistortion linearization of broadband (>100MHz), multi-carrier power amplifiers, over the 2MHz-2GHz range for the Joint Tactical Radio System (JTRS). This module will enable the use of higher-efficiency, but strongly non-linear, power amplifiers, as well as improve the spectral purity of the broadband transmit waveform. HYPRES will exploit fast (20-40GHz), high-linearity superconductor analog-to-digital and digital-to-analog converters and ultrafast digital logic circuits on an integrated multi-chip module to perform digital predistortion correction directly on the RF waveform. In Phase I, we propose to develop a new digital-RF predistorter that uses proportional, integral, and differential (PID) correction to compensate for rapid (10 GHz bandwidth) signal-dependent variations of the amplifier's non-linear transfer function, to achieve maximum suppression of intermodulation distortion. Neither narrowband analog RF electronics, nor slower semiconductor digital electronics, can achieve the necessary suppression. In Phase II, starting with a Phase I Option, we will design and demonstrate the PID digital-RF predistorter on a superconductor multi-chip module (MCM).

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

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