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Frequency sweep computation of half‐space scattering using asymptotic waveform evaluation
Author(s) -
Wu BiYi,
Zhang XiaoJie,
Sheng XinQing
Publication year - 2016
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/mop.29600
Subject(s) - waveform , scattering , computation , microwave , mathematical analysis , function (biology) , space (punctuation) , integral equation , mathematics , physics , computational physics , electronic engineering , optics , acoustics , computer science , algorithm , engineering , telecommunications , radar , biology , operating system , evolutionary biology
The asymptotic waveform evaluation (AWE) technique is applied to mixed potential integral equation (MPIE) for fast frequency sweep in half‐space scattering analysis. The AWE procedure requires the evaluation of high order derivative of impedance matrices that consist of complicated Green's function of layered media. Pseudo‐spectral method, a numerical differentiation approach, is employed to calculate these derivatives. Numerical experiments show that AWE technique improves the efficiency of scattering computation in half‐space structure. Furthermore, the presented approach can handle dispersive media. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:495–498, 2016