Study of Exact and High-Frequency Code Solvers for Applications to a Conformal Dipole Array
S. D. Walker and D. Chatterjee
Department of Computer Science and Electrical Engineering University of Missouri-Kansas City (UMKC), Kansas City
The embedded element pattern of a conformal dipole array of seven elements is calculated using integral equation algorithms in exact solvers such as FEKO and WIPL-D, with the central element excited and other elements match terminated in a 50Ω load. A technique is developed that uses the FEKO subdomain basis function current weights to derive the equivalent current weight for a single entire domain basis function for use in the high-frequency code NECBSC. This process includes effects of mutual coupling in the NECBSC calculations. The results for the embedded element pattern for cylinders with ka = 10, 20, 30,40, 60 and 80, computed via FEKO, WIPL-D, and NECBSC, reveal discrepancies in the deep shadow (or creeping wave) regions. Parametric simulation studies for dipole currents, by varying the cylinder radius or radial distance of the array arc from the cylinder curved surface, are also included.
ACES Journal
2009
December
24
6
550-558
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