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Increasing the bandwidth of coaxial aperture arrays in radar frequencies

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Abstract

Arrays of coaxial cavities in a silver slab are an angle-independent frequency-selective structure in the optical wavelengths. We show that understanding major resonant effects can achieve a similar structure in the radar frequencies. We use a biperiodic boundary integral method to explain the resonances. We suggest a geometrical evolution of the coaxial cavities that presents an enhanced bandwidth under oblique incidence in TM polarization.

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Authors and Affiliations

  1. Laboratory for Electromagnetic Waves and Microwave Electronics, Swiss Federal Institute of Technology, Zürich, Switzerland

    S. Nosal

  2. Dassault Aviation, Saint-Cloud, France

    P. Soudais

  3. Laboratoire Charles Fabry, Institut d Optique, Université Paris Sud, CNRS, Palaiseau, France

    J.-J. Greffet

Authors
  1. S. Nosal
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  2. P. Soudais
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  3. J.-J. Greffet
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Correspondence to S. Nosal.

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Nosal, S., Soudais, P. & Greffet, JJ. Increasing the bandwidth of coaxial aperture arrays in radar frequencies. Appl. Phys. A 103, 645–648 (2011). https://doi.org/10.1007/s00339-010-6233-8

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  • DOI: https://doi.org/10.1007/s00339-010-6233-8

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