Innovative improvements to High-Frequency Simulation Methods for Installed Antenna Performance

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0074
Agency Tracking Number: N103-197-0545
Amount: $149,936.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: N103-197
Solicitation Number: 2010.3
Small Business Information
Applied EM Inc.
144 Research Drive, Hampton, VA, -
DUNS: 782587406
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Cagatay Tokgoz
 Senior Research Engineer
 (757) 224-2035
 cagatay@appliedem.com
Business Contact
 C Reddy
Title: President
Phone: (757) 224-2035
Email: cjreddy@appliedem.com
Research Institution
 Stub
Abstract
It is critical to accurately predict radiation pattern, near fields and co-site coupling associated with antennas installed on electrically large airborne platforms, which can be addressed by asymptotic high frequency techniques such as the uniform geometrical theory of diffraction (UTD). However, innovative improvements are required in the development and application of these techniques due to challenges such as implementation of creeping wave mechanisms on faceted CAD models, identification of multiple order interactions and modeling of material treatments. Applied EM, Inc. developed a UTD based code, uCAST, to predict radiation pattern and coupling of antennas on electrically large aircraft platforms. Based on the experience with the development of this code, Applied EM proposes to enhance accuracy and efficiency of the code by improving its existing capabilities and implementing new capabilities. For this purpose, some benchmark problems that will address special needs of NAVAIR will be generated. Computed data from the uCAST code will be validated for these problems against computed data from a full-wave solver or measured data. Shortcomings of the existing capabilities and important missing interactions will be identified. The code will be enhanced accordingly to yield better accuracy.

* information listed above is at the time of submission.

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