Title :
Exact and asymptotic analysis of an infinite grid of metal strips using G1DMULT
Author :
Raffaelli, S. ; Sipus, Z. ; Kildal, P.-S. ; Johansson, M.
Author_Institution :
Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
The scattering properties of an infinite grid of conducting strips in a multilayer structure is studied by a spectral domain technique. To calculate the scattered field we Fourier expand the induced currents on the strips and use the numerical algorithm G1DMULT to evaluate the spectral domain Green´s functions. The results are compared with data obtained using the asymptotic strip boundary condition (ASBC). We have shown that the exact numerical results approach the ASBC results when the strip period decreases for all relative strip widths.
Keywords :
Fourier analysis; Green´s function methods; electric current; electromagnetic fields; electromagnetic induction; electromagnetic wave scattering; integral equations; spectral-domain analysis; ASBC results; EM scattering properties; Floquet mode expansion; Fourier expansion; G1DMULT; asymptotic analysis; asymptotic strip boundary condition; conducting strips; exact analysis; exact numerical results; induced currents; infinite grid; infinite planar array; integral equation; metal strips; multilayer structure; numerical algorithm; periodic structures; scattered field; spectral domain Green´s functions; strip loaded slab; strip period; strip widths; Boundary conditions; Dielectric substrates; Electromagnetic scattering; Microwave technology; Optical filters; Optical scattering; Optical surface waves; Periodic structures; Strips; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631518
