Articles | Volume 15
Adv. Radio Sci., 15, 29–35, 2017
https://doi.org/10.5194/ars-15-29-2017
Adv. Radio Sci., 15, 29–35, 2017
https://doi.org/10.5194/ars-15-29-2017

  21 Sep 2017

21 Sep 2017

Physical optics and full-wave simulations of transmission of electromagnetic fields through electrically large planar meta-sheets

Ezgi Öziş1, Andrey V. Osipov1, and Thomas F. Eibert2 Ezgi Öziş et al.
  • 1Microwaves and Radar Institute, German Aerospace Center, Oberpfaffenhofen, Wessling, 82234, Germany
  • 2Chair of High-Frequency Engineering, Technical University of Munich, Munich, 80290, Germany

Abstract. Ultra-thin metamaterials, called meta-surfaces or meta-sheets, open up new opportunities in designing microwave radomes, including an improved transmission over a broader range of antenna scan angles, tailorable and reconfigurable frequency bands, polarization transformations, one-way transmission and switching ability. The smallness of the unit cells combined with the large electrical size of microwave radomes significantly complicates full-wave numerical simulations as a very fine sampling over an electrically large area is required. Physical optics (PO) can be used to approximately describe transmission through the radome in terms of the homogenized transmission coefficient of the radome wall. This paper presents the results of numerical simulations of electromagnetic transmission through planar meta-sheets (infinite and circularly shaped) obtained by using a full-wave electromagnetic field simulator and a PO-based solution.

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Short summary
Meta-sheets open up new opportunities in the design of radomes for microwave antennas. A meta-sheet typically consists of a periodic array of small resonators embedded in a thin dielectric layer. The smallness of unit cells and the large electrical size of microwave radomes significantly complicate full-wave numerical simulations as a very fine sampling over a large area is required. This paper proposes an efficient simulation approach, which combines Physical Optics and Finite Element methods.