DocumentCode
2154961
Title
An efficient method for highly oscillatory physical optics integrals
Author
Wu, Yu Mao ; Jiang, Li Jun ; Chew, Weng Cho
Author_Institution
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
fYear
2012
fDate
8-14 July 2012
Firstpage
1
Lastpage
2
Abstract
In this work, we use the steepest descent path (SDP) method in the complex analysis to calculate the highly oscillatory physical optics (PO) integral with quadratic phase and amplitude variations on the triangular patch. Compared with traditional approximate asymptotic expansion approach, our method has significantly improved the PO integral accuracy by one to two digits (10-1 to 10-2) for evaluating the PO integral. Moreover, the computation effort for the highly oscillatory integral is frequency independent.
Keywords
electric field integral equations; electromagnetic wave scattering; gradient methods; physical optics; PO integral; SDP; amplitude variations; complex analysis; oscillatory physical optics integral; quadratic phase; steepest descent path method; triangular patch; Accuracy; Antennas; Approximation methods; Educational institutions; Electromagnetic scattering; Force; Physical optics;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location
Chicago, IL
ISSN
1522-3965
Print_ISBN
978-1-4673-0461-0
Type
conf
DOI
10.1109/APS.2012.6349078
Filename
6349078
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