In this paper, a computationally efficient method of moments (MoM) formulation is presented that makes use of an approximate asymptotic formula for the slot mutual admittance. The formula accuracy to the asymptotic order O(r - 3/2) gives sufficient precision for moderate slot distance (1.5-2 wavelengths). In a typical radial line slot array analysis, this permits avoiding the numerical integration in more than 90% of the slot pairs with a savings of CPU time of the same order.
Asymptotic Approximation of Mutual Admittance Involved in MoM Analysis of RLSA Antennas / ALBANI M; MAZZINGHI A; A. FRENI. - In: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. - ISSN 0018-926X. - STAMPA. - 57:(2009), pp. 1057-1063. [10.1109/TAP.2009.2015798]
Asymptotic Approximation of Mutual Admittance Involved in MoM Analysis of RLSA Antennas
MAZZINGHI, AGNESE;FRENI, ANGELO
2009
Abstract
In this paper, a computationally efficient method of moments (MoM) formulation is presented that makes use of an approximate asymptotic formula for the slot mutual admittance. The formula accuracy to the asymptotic order O(r - 3/2) gives sufficient precision for moderate slot distance (1.5-2 wavelengths). In a typical radial line slot array analysis, this permits avoiding the numerical integration in more than 90% of the slot pairs with a savings of CPU time of the same order.
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