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Ultra-High Speed Direct Digital Synthesizer MMIC with High Dynamic Range for Arbitrary Waveform Generation

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-16-C-0051
Agency Tracking Number: F14A-T03-0145
Amount: $749,948.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: AF14-AT03
Solicitation Number: 2014.0
Solicitation Year: 2014
Award Year: 2016
Award Start Date (Proposal Award Date): 2016-05-12
Award End Date (Contract End Date): 2018-08-14
Small Business Information
1400 Crystal Drive
Arlington, VA 22202
United States
DUNS: 036593457
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. Foster Dai
 (334) 844-1863
Business Contact
 Dana Ho
Phone: (703) 414-5016
Research Institution
 Auburn University
 Dr. Foster Dai
570 Devall Dr, Suite 102 Array
Auburn, AL 36832
United States

 (334) 844-1863
 Nonprofit College or University

The recent success of ultra-high speed direct digital synthesizers (DDS) provides excellent solutions to waveform generation directly at radar bands. An arbitrary waveform generators operating at clock frequency close to 52 Gs/s with bandwidth greater than 26 GHz and dynamic range close to 80 dB would greatly improve transmitter performance for applications such as telemetry and multi-purpose RF sensors. Although the current DDS monolithic microwave integrated circuits (MMICs) have achieved amazingly high clock frequency, they all face the challenge of spectral purity. We propose to develop a high-performance DDS MMIC with innovative spur cancellation techniques using pre-distortion, spur lookup and Delta-Sigmamodulation for improved spectral performance and energy efficiency. This DDS MMIC utilizes interleaving technique to achieve ultra-high speed of 52 Gs/s. Interleaving channels clocked by inverted clocks intrinsically reduces the spurs due to the first order mixing.Our approach provides additional, novel techniques to cancel higher order spurs while maintaining favorable size and power characteristics.

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