Title :
An application-independent multilevel fast multipole code for the analysis of curvilinear surfaces with wire attachment
Author :
Hsueh-Yung Chao ; Siyuan Chen ; Weng Cho Chew ; Zhijun Liu ; Michielssen, E. ; Jiming Song
Author_Institution :
Dept. of Electr. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
The multilevel fast multipole algorithm (MLFMA) has been shown to provide substantial improvement over traditional method of moments (MOM) in the analysis of interconnections of linear surfaces and wires. In order to reduce the number of unknowns involved in modeling surface and wire structures with a high degree of curvature, the curvilinear RWG basis and the curvilinear wire basis are applied to expand the current distribution on curved surfaces and wires. The techniques for singularity extraction proposed by Champagne, Williams and Wilton (1992) are extended for the curvilinear RWG basis. In the present work, the original MLFMA code is modified to be an application-independent library similar to ScaleME. The aim is to hide the details of MLFMA implementation and let users exploit the power of MLFMA through a simple interface. For users who have a general MOM code with arbitrary basis functions, they only have to write support functions for computing the impedance matrix elements and radiation and receiving patterns of each basis function. Then, they can call the functions in the MLFMA library to setup MLFMA-related parameters and to accelerate the matrix-vector multiplication with the freedom of using any iterative matrix solver.
Keywords :
antenna radiation patterns; conducting bodies; electric field integral equations; helical antennas; impedance matrix; iterative methods; matrix multiplication; method of moments; wire antennas; wires (electric); EFIE; MLFMA code; MLFMA library; MLFMA-related parameters; MOM code; ScaleME; application-independent library; application-independent multilevel fast multipole code; basis functions; current distribution; curved surfaces; curvilinear RWG basis; curvilinear surfaces; curvilinear wire basis; electric field integral equation; helix antenna; impedance matrix elements; interface; iterative matrix solver; linear surfaces interconnection; matrix-vector multiplication; method of moments; multilevel fast multipole algorithm; perfect electrically conducting surface; radiation pattern; receiving pattern; singularity extraction; support functions; wire attachment; wire structures; wires interconnection; Acceleration; Apertures; Current distribution; Equations; Libraries; MLFMA; Message-oriented middleware; Moment methods; Surface impedance; Wire;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874856