Real axis integration of an oscillatory infinite integral occurring in transient scattering by cylinders

Author

Naishadham, K. ; Hui-Wen Yao

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

fYear

1992

fDate

18-25 June 1992

Firstpage

654

Abstract

Special techniques are developed to evaluate numerically the inverse Fourier transform representing the transient response of a perfectly conducting cylinder excited by a magnetic line source. Numerical results compare well with those obtained by the wavefront asymptotic approximation at early times and by the singularity expansion method at late times. With appropriate modification, these techniques can be applied to evaluate the spectral integrals occurring in the Green´s functions for multilayer dielectric cylinders.<>

Keywords

Fourier transforms; Green´s function methods; electromagnetic wave scattering; integration; transient response; EM scattering; Green´s functions; early times; inverse Fourier transform; late times; magnetic line source; multilayer dielectric cylinders; oscillatory infinite integral; perfectly conducting cylinder; real axis integration; singularity expansion method; spectral integrals; transient response; transient scattering; wavefront asymptotic approximation; Azimuthal angle; Dielectrics; Dipole antennas; Engine cylinders; Fourier transforms; Frequency; Kernel; Scattering; Transient response; Vents;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221852

Filename

221852