Wide Bandgap Amplifier Linearization

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-08-C-0185
Agency Tracking Number: N081-039-0382
Amount: $149,858.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: N08-039
Solicitation Number: 2008.1
Small Business Information
650 Suffolk Street, Suite410, Lowell, MA, 01854
DUNS: 168849011
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Nickolas Kingsley
 Principal Engineer
 (978) 441-1117
Business Contact
 Yusuke Tajima
Title: Director Modeling and Design
Phone: (978) 441-1117
Email: ytajima@auriga-ms.com
Research Institution
This program addresses the challenges associated with power amplifiers used under multi-tone drive where high operating efficiency is required without adding false signals or errors (intermodulation distortion, IMD) to the output signal. The goal is to reduce all IMD levels below -30dBc without sacrificing the efficiency of the amplifier, under a signal drive condition of up to eight simultaneous tones in L-C bands with an instantaneous bandwidth of 500MHz. A broadband power amplifier technology that covers 3,4,5:1 bandwidths with an output of 25-100W will also be addressed as the basis of the project. Auriga Measurement Systems and BAE have teamed to develop a high efficiency linear amplifier. To achieve this goal, an accurate Gan HEMT device model will be created that is capable of modeling the wide bias voltage range and non-linearity of the device. Once the accuracy of the model is proven, a 50W amplifier that operates from 1-3GHz will be designed. Various techniques will be investigated for improving the amplifier efficiency, including envelope tracking, pre-distortion, and using a Doherty amplifier. Once an adequate model is developed, the foundation will be laid for developing sophisticated EW technologies, including jammers and “spoofers”, for this and other military programs.

* information listed above is at the time of submission.

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