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B‐spline basis functions for moment‐method analysis of axisymmetric reflector antennas
Author(s) -
Teixeira Fernando L.,
Bergmann José R.
Publication year - 1997
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19970220)14:3<188::aid-mop16>3.0.co;2-4
Subject(s) - basis function , method of moments (probability theory) , reflector (photography) , mathematical analysis , basis (linear algebra) , impedance parameters , rotational symmetry , gravitational singularity , corner reflector , mathematics , moment (physics) , geometry , optics , electrical impedance , physics , classical mechanics , light source , statistics , estimator , quantum mechanics
The use of cubic B splines is investigated in connection with the method‐of‐moments (MoM) analysis of axially symmetric reflector antennas. Convergent solutions are obtained with as few as 2–3 basis functions per wavelength. A comparative study is made versus different sets of basis functions. It is shown that B splines lead to a faster evaluation of the impedance matrix, and enable a fully analytical extraction of integral singularities in the self‐terms and a more accurate representation of the singular current behavior near the reflector edge. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 14, 188–191, 1997