Phase resonances in compound metallic gratings
We study the phase resonances in metallic compound gratings. The diffraction problem is solved by means of the modal method and the surface impedance boundary condition. The response of gratings made of various metals is analysed. Curves of specular efficiency, field amplitude and phase inside the g...
Guardado en:
| Autor principal: | |
|---|---|
| Otros Autores: | , |
| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
2003
|
| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | We study the phase resonances in metallic compound gratings. The diffraction problem is solved by means of the modal method and the surface impedance boundary condition. The response of gratings made of various metals is analysed. Curves of specular efficiency, field amplitude and phase inside the grooves are shown and discussed for different wavelengths ranging from 0.21 to 32 μm. The results are compared with those previously obtained for a perfect conductor. In the case of a real metallic structure we observe that to have a phase resonance, a reflectance higher than 93% is necessary. |
|---|---|
| Bibliografía: | Bloch, A., Medhurst, R.G., Pool, S.D., Knock, W.E., (1960) Superdirectivity Proc. IEE, 48, p. 1164 Fikioris, G., King, R.W.P., Wu, T., The resonant circular array of electrically small elements (1990) J. Appl. Phys., 68, pp. 431-439 Veremey, V.V., Superdirective antennas with passive reflectors (1995) IEEE Antennas Propag. Mag., 37, pp. 16-27 Veremey, V.V., Shestopalov, V.P., Superdirective radiation forming in antenna with passive resonant reflector (1991) Radio Sci., 26, pp. 631-636 Veremey, V.V., Mittra, R., Scattering from structures formed by resonant elements (1998) IEEE Trans. Antennas Propag., 46, pp. 494-501 Skigin, D.C., Veremey, V.V., Mittra, R., Superdirective radiation from finite gratings of rectangular grooves (1999) IEEE Trans. Antennas Propag., 47, pp. 376-383 Fantino, Á.N., Grosz, S.I., Skigin, D.C., Resonant effect in periodic gratings comprising a finite number of grooves in each period (2001) Phys. Rev. E, 64, p. 016605 Grosz, S.I., Skigin, D.C., Fantino, Á.N., Resonant effects in compound diffraction gratings: Influence of the geometrical parameters of the surface (2002) Phys. Rev. E, 65, p. 056619 Botten, L.C., Craig, M.S., McPhedran, R.C., Adams, J.L., Andrewartha, J.R., The finitely conducting lamellar diffraction grating (1981) Opt. Acta, 28, pp. 1087-1102 Botten, L.C., Craig, M.S., McPhedran, R.C., Highly conducting lamellar diffraction gratings (1981) Opt. Acta, 28, pp. 1103-1106 Roberts, A., McPhedran, R.C., Power losses in highly conducting lamellar gratings (1987) J. Mod. Opt., 34, pp. 511-538 Botten, L.C., Craig, M.S., McPhedran, R.C., Complex zeros of analytic functions (1983) Comput. Phys. Commun., 29, pp. 245-259 Lochbihler, H., Depine, R., Diffraction from highly conducting wire gratings (1993) Appl. Opt., 32, pp. 3459-3465 Lochbihler, H., Depine, R., Characterization of highly conducting wire gratings using an electromagnetic theory of diffraction (1993) Opt. Commun., 100, pp. 231-239 Lochbihler, H., Depine, R., Diffraction from highly conducting wire gratings of arbitrary cross section (1993) J. Mod. Opt., 48, pp. 1273-1298 Skigin, D.C., Depine, R.A., Enhancement of antispecular orders from metallic gratings with rectangular grooves (1995) Optik, 101, pp. 63-72 Depine, R.A., Surface impedance boundary conditions used to study light scattering from metallic surfaces (1990) Scattering in Volumes and Surfaces, pp. 239-253. , ed M Nieto-Vesperinas and J C Dainty (Amsterdam: North-Holland) Depine, R.A., Perfectly conducting diffraction grating formalism extended to good conductors via the surface impedance boundary condition (1987) Appl. Opt., 26, pp. 2348-2354 Jackson, J.D., (1975) Classical Electrodynamics 2nd Edn, , New York: Wiley Petit, R., (1980) Electromagnetic Theory of Gratings, , New York: Springer Depine, R.A., Simon, J.M., Diffraction grating efficiencies. Conformal mapping method for a good real conductor (1982) Opt. Acta, 29, pp. 1439-1473 Depine, R.A., Brudny, V.L., The surface impedance of metallic objects: Rigorous calculations for imperfectly conducting diffraction gratings (1990) IEEE Trans. Antennas Propag., 38, pp. 1290-1294 |
| ISSN: | 14644258 |
| DOI: | 10.1088/1464-4258/5/5/353 |