Title :
Closed Form Asymptotic Expressions for Slot Mutual Admittance to Speed up MoM Matrix Filling Time in RLSA Full Wave Analysis
Author :
Albani, Matteo ; Mazzinghi, A. ; Freni, A.
Author_Institution :
Inf. Engeneering Dept., Siena Univ., Siena
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.
Keywords :
matrix algebra; method of moments; microwave antenna arrays; millimetre wave antenna arrays; slot antenna arrays; MoM matrix filling time; RLSA full wave analysis; closed form asymptotic expression; method-of-moment formulation; microwave antenna; millimeter wave; radial line slot array antenna; slot mutual admittance; Antenna arrays; Asymptotic methods; Moment methods; RLSA;
Conference_Titel :
Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-0-86341-842-6