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Skigin, D.; Veremey, V.; Mittra, R. "Superdirective radiation from finite groove gratings" (1998) 1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998. 4:2174-2177
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Abstract:

The feasibility of generating superdirective radiation from antenna arrays comprising a finite number of active elements has been previously established in theoretical research, and has also been verified experimentally. In an earlier paper the authors have demonstrated that the scattered field of a structure formed by a finite array of coupled slotted cylinders exhibits superdirective characteristics at the resonance frequencies of the system. It is interesting to examine the question whether this property is a common attribute of scatterers formed by coupled resonant elements. This prompts us to investigate, in this paper, a corrugated structure formed by a finite array of rectangular grooves in a conducting surface. We find that the scattered field from such gratings also exhibits superdirective properties and that the superdirective scattering is associated with a high Q resonance that can only be excited in finite gratings. At these resonances, the magnitude of the electromagnetic field excited in the grooves is very high and the phase alternates between 0 and π. © 1998 IEEE.

Registro:

Documento: Conferencia
Título:Superdirective radiation from finite groove gratings
Autor:Skigin, D.; Veremey, V.; Mittra, R.
Filiación:University of Ruenos Aires, Physics Department, Ciudad Universitaria, Pabellón, Buenos Aires, 11428, Argentina
Pennsylvania State University, 319 Electrical Engineering East, University Park, PA 16802-2705, United States
Palabras clave:Antenna arrays; Electromagnetic fields; Amplitude modulation; Antenna arrays; Electromagnetic wave polarization; Electromagnetic wave scattering; Phase modulation; Conducting surfaces; Corrugated structures; High-Q resonances; Rectangular groove; Resonance frequencies; Resonant elements; Slotted cylinders; Theoretical research; Resonance; Antenna radiation; Finite groove gratings; Q resonances; Rayleigh coefficients; Superdirective radiations
Año:1998
Volumen:4
Página de inicio:2174
Página de fin:2177
DOI: http://dx.doi.org/10.1109/APS.1998.701649
Título revista:1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998
Título revista abreviado:IEEE Antennas Propag. Soc. Int. Symp., Dig. - Antennas: Gateways Glob. Netw. - Held conjunction: USNC/URSI National Radio Sci. Meet.
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07803447_v4_n_p2174_Skigin

Referencias:

  • Broussaud, G., Spitz, Superdirective Supergain (1960) Ann. Radioelectr, 15 (62), pp. 289-304
  • Hansen, R.C., Fundamental Limitations in Antennas (1981) Proceedings of the IEEE, 69 (2), pp. 170-182
  • Bloch, A., Medhursi, R.G., Pool, S.D., Kock, W.E., Superdirectivity (1960) Proceedings of the IEE, 48, p. 1164. , June
  • Fikioris, G., King, R.W.P., Wu, T., The resonant circular array of electrically short elements (1990) J Applied Physics, 68 (2), pp. 431-439
  • Veremey, V., Mittra, R., On realization of Superdirectivity using Passive Scatierers (1997) IEEE AP-S International Symposium and URSI Radio Science Meeting, 2, pp. 894-897. , July 13-18, Montreal, Canada. Digest
  • Depine, R.A., Skigin, D.C., Scattering from metallic surfaces having a finite number of rectangular grooves (1994) J Opt. Soc. Am. A, 11 (11), pp. 2844-2850
  • Skigin, D.C., Depine, R.A., Enhancement of antispecular orders from metallic gratings with rectangular grooves (1995) Oplik, 101 (2), pp. 63-72

Citas:

---------- APA ----------
Skigin, D., Veremey, V. & Mittra, R. (1998) . Superdirective radiation from finite groove gratings. 1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998, 4, 2174-2177.
http://dx.doi.org/10.1109/APS.1998.701649
---------- CHICAGO ----------
Skigin, D., Veremey, V., Mittra, R. "Superdirective radiation from finite groove gratings" . 1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998 4 (1998) : 2174-2177.
http://dx.doi.org/10.1109/APS.1998.701649
---------- MLA ----------
Skigin, D., Veremey, V., Mittra, R. "Superdirective radiation from finite groove gratings" . 1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998, vol. 4, 1998, pp. 2174-2177.
http://dx.doi.org/10.1109/APS.1998.701649
---------- VANCOUVER ----------
Skigin, D., Veremey, V., Mittra, R. Superdirective radiation from finite groove gratings. IEEE Antennas Propag. Soc. Int. Symp., Dig. - Antennas: Gateways Glob. Netw. - Held conjunction: USNC/URSI National Radio Sci. Meet. 1998;4:2174-2177.
http://dx.doi.org/10.1109/APS.1998.701649