Efficient Constrained Optimization Method for In-Situ Antenna Performance Restoration

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$79,957.00
Award Year:
2012
Program:
SBIR
Phase:
Phase I
Contract:
N68335-12-C-0178
Award Id:
n/a
Agency Tracking Number:
N121-015-0571
Solicitation Year:
2012
Solicitation Topic Code:
N121-015
Solicitation Number:
2012.1
Small Business Information
7735 Paragon Road, Dayton, OH, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
134159925
Principal Investigator:
Tri Van
Sr. Research Scientist
(937) 435-1016
trivan@berriehill.com
Business Contact:
David Hughes
VP Finance
(937) 435-1016
dfhughes@berriehill.com
Research Institution:
Stub




Abstract
In-situ antenna measurements are often impractical or too costly, since they require the fabrication of the antenna and structural modifications of the platform for antenna installation. As the forward EM problems can be numerically solved ever more efficiently, it is possible to perform antenna-platform optimizations in a reasonable time. They provide allow the investigation of alternative antenna sites, material treatments, or antenna modifications to mitigate the platform or nearby structure effects in order to satisfy the performance requirements. In this proposal, it is assumed that the installed antenna is near optimum and only small adjustments or modifications are required to regain its performance characteristics. As such, the limited-memory BFGS with simple bound constraints is chosen to solve the large scale mutli-objective optimization problem. In this approach, the gradient of the vector functional is computed by the adjoint method and the explicit storage of the approximate Hessian computed based on a recursive equation is not required. The function evaluation will be performed by the method-of-moment solver in the commercial FEKO.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government