Recently a growing interest has arisen about radial line slot array (RLSA) antennas that appear to be simple and low-cost solutions for applications at high microwaves and millimeter waves. In this paper a computationally efficient method of moments (MoM) formulation that make use of an approximate asymptotic formula for the slot mutual admittance is presented. The formula accuracy to the asymptotic order 0(r-3/2) gives sufficient accuracy for moderate slot distance (1.5-2 wavelength). This permits, in a typical RLSA analysis, avoiding the numerical integration in more than 90% of the slot pairs with a save of CPU time of the same order.
Closed Form Asymptotic Expressions for Slot Mutual Admittance to Speed up MoM Matrix Filling Time in RLSA Full Wave Analysis / M. Albani; A. Mazzinghi; A. Freni. - STAMPA. - (2007), pp. 1-4. ((Intervento presentato al convegno The Second European Conference on Antennas and Propagation, 2007. EuCAP 2007. tenutosi a Edinburgh , UK nel 11-16 Nov. 2007.
Closed Form Asymptotic Expressions for Slot Mutual Admittance to Speed up MoM Matrix Filling Time in RLSA Full Wave Analysis
MAZZINGHI, AGNESE;FRENI, ANGELO
2007
Abstract
Recently a growing interest has arisen about radial line slot array (RLSA) antennas that appear to be simple and low-cost solutions for applications at high microwaves and millimeter waves. In this paper a computationally efficient method of moments (MoM) formulation that make use of an approximate asymptotic formula for the slot mutual admittance is presented. The formula accuracy to the asymptotic order 0(r-3/2) gives sufficient accuracy for moderate slot distance (1.5-2 wavelength). This permits, in a typical RLSA analysis, avoiding the numerical integration in more than 90% of the slot pairs with a save of CPU time of the same order.
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