A modified pole-zero technique for the synthesis of waveguide leaky-wave antennas loaded with dipole-based FSS

  • María García-Vigueras /
  • José Luis Gómez-Tornero /
  • George Goussetis /
  • Juan Sebastian Gómez-Díaz /
  • Alejandro álvarez-Melcón
Journal ar
IEEE Transactions on Antennas and Propagation
  • Volumen: 58
  • Número: 6
  • Fecha: 01 June 2010
  • Páginas: 1971-1979
  • ISSN: 0018926X
  • Source Type: Journal
  • DOI: 10.1109/TAP.2010.2046856
  • Document Type: Article
An extension of the pole-zero matching method proposed by Stefano Maci for the analysis of electromagnetic bandgap (EBG) structures composed by lossless dipole-based frequency selective surfaces (FSS) printed on stratified dielectric media, is presented in this paper. With this novel expansion, the dipoles length appears as a variable in the analytical dispersion equation. Thus, modal dispersion curves as a function of the dipoles length can be easily obtained with the only restriction of single Floquet mode propagation. These geometry-dispersion curves are essential for the efficient analysis and design of practical EBG structures, such as waveguides loaded with artificial magnetic conductors (AMC) for miniaturization, or leaky-wave antennas (LWA) using partially reflective surfaces (PRS). These two practical examples are examined in this paper. Results are compared with full-wave 2D and 3D simulations showing excellent agreement, thus validating the proposed technique and illustrating its utility for practical designs. © 2010 IEEE.

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