DocumentCode :
3388217
Title :
On the application of the line incremental PO Green´s function for the prediction of the field scattered from large bodies
Author :
Albani, M. ; Meniconi, G. ; Maci, S.
Author_Institution :
Dept. of Matter Phys. & Adv. Technol., Messina Univ., Italy
Volume :
4
fYear :
2004
fDate :
20-25 June 2004
Firstpage :
4507
Abstract :
The problem of computing the physical optics (PO) field scattered by a large surface is affected by numerical difficulties due to the fast oscillation of the integrand. The increase in computation time as the surface dimension grows in terms of the wavelength becomes unacceptable, especially for multiple bounce PO (e.g., for multi-reflector antenna system, beam waveguides, etc.). By using the finite element technique, the exact surface is approximated by many flat facets and the scattered field is provided by the sum of the individual field contributions. When using this technique in conjunction with a fast algorithm for evaluating the single facet contribution, the advantage may become relevant. The paper verifies the applicability of this concept using the incremental length PO Green´s function (ILPOGF).
Keywords :
Green´s function methods; computational electromagnetics; electromagnetic wave scattering; finite element analysis; physical optics; EM field scattering; beam waveguides; computation time; fast algorithm; finite element technique; incremental length PO Green function; line incremental PO Green function; multi-reflector antenna system; multiple bounce PO; physical optics field; Electromagnetic scattering; Green´s function methods; Magnetic fields; Optical computing; Optical scattering; Optical surface waves; Optical waveguides; Physical optics; Physics computing; Surface waves;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
Type :
conf
DOI :
10.1109/APS.2004.1330354
Filename :
1330354
Link To Document :
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