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Electromagnetic scattering by a strip grating with nonplanar illumination
Author(s) -
Gimeno B.,
Marquina J. L.,
Navasquillo J.,
Pomer F.
Publication year - 1993
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.4650061411
Subject(s) - optics , physics , grating , scattering , diffraction , floquet theory , antenna (radio) , aperture (computer memory) , beam (structure) , harmonics , radiation pattern , angular aperture , angular spectrum method , harmonic , acoustics , engineering , telecommunications , nonlinear system , focal length , quantum mechanics , voltage , lens (geology)
An angular‐spectrum method combined with the Galerkin procedure has been used to evaluate the electromagnetic scattering of a beam radiated by an aperture antenna after being incident obliquely upon a strip grating. Integral expressions for the transmitted and reflected fields are obtained. The incident beam radiated by the antenna is diffracted in several beams corresponding to the propagative Floquet harmonics. An angular shift of the transmitted and reflected fundamental harmonic beams has been shown. Comparison between numerical and experimental results validates this method. © 1993 John Wiley & Sons, Inc.