Adaptive Spatial Resolution in Fast, Efficient, and Stable Analysis of Metallic Lamellar Gratings at Microwave Frequencies

Author

Khavasi, Amin ; Mehrany, Khashayar

Author_Institution

Electr. Eng. Dept., Sharif Univ. of Technol., Tehran

Volume

57

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

1115

Lastpage

1121

Abstract

The technique of adaptive spatial resolution is for the first time applied in fast and efficient Fourier-based analysis of metallic lamellar gratings at microwave frequencies. In as much as the ultrahigh-contrast permittivity profile of these structures is likely to incur numerical instabilities, the continuity condition is heedfully imposed on the transverse electromagnetic fields and an elegant, unconditionally stable matrix-based strategy is proposed to rigorously analyze the microwave transmission of these structures .

Keywords

Fourier analysis; diffraction gratings; electromagnetic fields; permittivity; Fourier-based analysis; adaptive spatial resolution; metallic lamellar gratings; microwave frequencies; microwave transmission; stable analysis; transverse electromagnetic fields; ultrahigh-contrast permittivity; Automatic speech recognition; Diffraction gratings; Electromagnetic diffraction; Electromagnetic fields; Finite difference methods; Microwave frequencies; Optical arrays; Permittivity; Spatial resolution; Stability; Adaptive spatial resolution; Metallic grating; enhanced transmission;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2009.2015829

Filename

4812219