Memorias de investigación
Communications at congresses:
Improvements in the MoM Analysis of 3-D Planar Multilayered Periodic Structures Used in the Design of Wideband Reflectarray Antennas
Year:2015
Research Areas
  • Electronic technology and of the communications
Information
Abstract
When reflectarray antennas made of cells with stacked rectangular patches are designed under the local periodicity assumption, one needs to solve many times the problem of the scattering of plane waves by periodic arrays of stacked rectangular patches in multilayered substrates. Although this problem has been usually tackled by means of the Method of Moments (MoM) in the spectral domain, this is not an efficient computational approach since it requires the determination of slowly convergent double infinite summations. In this paper, the slowly convergent summations are transformed into singular finite double integrals by invoking the Mixed Potential Integral Equation (MPIE) formulation of the MoM in the spatial domain. The multilayered periodic Green?s functions involved in these double integrals are judiciously interpolated in terms of 2-D Chebyshev polynomials. Also, Ma-Rokhlin-Wandzura quadrature rules are used to handle the logarithmic singularities of the double integrals. Thanks to these two strategies that help to save CPU time, the novel MoM approach in the spatial domain turns out to be between one and two orders of magnitude faster than the standard MoM approach in the spectral domain for the analysis of periodic structures made of cells with stacked rectangular patches (and therefore, for the design of the reflectarray antennas containing these cells) when an accuracy of two significant figures is required.
International
Si
Congress
9th European Conference on Antennas and Propagation
730
Place
Lisboa (Portugal)
Reviewers
Si
ISBN/ISSN
9781479970513
Start Date
12/04/2015
End Date
17/04/2015
From page
1
To page
4
Proceedings of 9th European Conference on Antennas and Propagation
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Electromagnetismo Aplicado
  • Departamento: Señales, Sistemas y Radiocomunicaciones