Efficient analysis of multilayered periodic structures with application to the design of reflectarray antennas

Florencio Díaz, Rafael and Rodríguez Boix, Rafael and Encinar Garcinuño, José Antonio (2011). Efficient analysis of multilayered periodic structures with application to the design of reflectarray antennas. In: "VIII Encuentro Ibérico de Electromagnetismo Computacional", 02/11/20111 - 04/11/2011, Sesimbra (Lisboa), Portugal. p. 1.

Description

Title: Efficient analysis of multilayered periodic structures with application to the design of reflectarray antennas
Author/s:
  • Florencio Díaz, Rafael
  • Rodríguez Boix, Rafael
  • Encinar Garcinuño, José Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: VIII Encuentro Ibérico de Electromagnetismo Computacional
Event Dates: 02/11/20111 - 04/11/2011
Event Location: Sesimbra (Lisboa), Portugal
Title of Book: VIII Encuentro Ibérico de Electromagnetismo Computacional
Date: 2011
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In order to design reflectarray antennas within reasonable CPU times, fast and accurate numerical tools for the analysis of periodic multilayered structures are required. In this paper the method of moments in the spectral domain (MoM-SD) based on multilayered Green's functions (MGF) is applied to the analysis of periodic structures containing either multilayered stacked patches in the unit cell or coplanar parallel dipoles in the unit cell. These two multiresonant cells are potential elements for the design of reflectarray antennas. In the paper we show that the use of basis functions with edge singularities in the approximation of the current density on the patches/dipoles leads to important computer memory and CPU times savings in the analysis of the periodic structures. Also, a rational fitting technique is introduced which makes it possible to obtain closed-form expressions for the scattering matrix of the periodic structures in terms of the dimension of the patches/dipoles used to adjust the phase of the reflectarray elements. Finally, it is shown that reflectarray antennas made of parallel dipoles and reflectarray antennas made of stacked patches have a similar performance in terms of bandwidth and phase range. However, the former antennas are preferable to the latter since they are simpler to manufacture and cheaper.

More information

Item ID: 49100
DC Identifier: http://oa.upm.es/49100/
OAI Identifier: oai:oa.upm.es:49100
Deposited by: Memoria Investigacion
Deposited on: 06 Feb 2018 16:16
Last Modified: 06 Feb 2018 16:16
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