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

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$999,840.00
Award Year:
2011
Program:
SBIR
Phase:
Phase II
Contract:
N68335-11-C-0357
Agency Tracking Number:
N103-197-0545
Solicitation Year:
2010
Solicitation Topic Code:
N103-197
Solicitation Number:
2010.3
Small Business Information
Applied EM Inc.
144 Research Drive, Hampton, VA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
782587406
Principal Investigator:
Cagatay Tokgoz
Senior Research Engineer
(757) 224-2035
cagatay@appliedem.com
Business Contact:
C.J. Reddy
President
(757) 224-2035
cjreddy@appliedem.com
Research Institution:
Stub




Abstract
It is critically important to accurately predict radiation pattern, near fields and co-site coupling associated with antennas placed on electrically large airborne platforms, which can be addressed by high frequency techniques such as the uniform geometrical theory of diffraction (UTD). However, innovative improvements are needed for 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. has been developing a UTD based code, uCAST, to predict radiation pattern and coupling of antennas on electrically large aircraft platforms. During Phase I, some benchmark problems that can be specifically used to validate individual ray mechanisms implemented into the uCAST code have been determined. Radiation pattern data has been generated by the uCAST code for these benchmark problems. The data from the uCAST code has been validated against the MLFMM (multi-level fast multi-pole method) data from FEKO commercial software as well as the data from the UTD based NEWAIR code. Shortcomings of the existing capabilities and important missing interactions have been determined. During Phase II, the code will be enhanced based on the findings to yield better accuracy.

* information listed above is at the time of submission.

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