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<p>This paper presents a flexible and low-profile frequency selective metasurface (FSMS) resonating at 10 GHz. The proposed FSMS is a single-layer design with stable response under conformal applications. The inter-element capacitance has been enhanced by introducing lumped capacitors. This technique has significantly reduced the size of the unit element (UE) and enabled operation around the 2 GHz frequency band. The proposed capacitive-loaded structure is highly compact with a wideband transmission response featuring 95% fractional bandwidth (1.2 GHz to 3.1 GHz). The proposed FSMS design architecture is easy to reconfigure for any resonant frequency by tuning the inter-element capacitors. Its small size of 5.3 <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41598_2025_7696_Article_IEq1.gif" Format="GIF" Height="13" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="TEX">\(\times\)</EquationSource> </InlineEquation> 5.3 <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41598_2025_7696_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="35" /> </InlineMediaObject> <EquationSource Format="TEX">\(\hbox {mm}^2\)</EquationSource> </InlineEquation> enables the design to be used effectively at S, C, and X-band wrapping applications, which is otherwise infeasible with larger UEs. In addition to miniaturization, the design offers high angular stability and polarization insensitivity for different wrapping angles.</p>

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Ultra-miniaturized capacitive loaded conformal frequency selective metasurface for S, C, and X band applications

  • 期刊论文

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  • 发表日期：

    2025年7月2日

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  • Haider Ali,
  • Laeeq Riaz,
  • Bilal Tariq Malik,
  • Muhammad Farhan Shafique,
  • Slawomir Koziel

摘要

This paper presents a flexible and low-profile frequency selective metasurface (FSMS) resonating at 10 GHz. The proposed FSMS is a single-layer design with stable response under conformal applications. The inter-element capacitance has been enhanced by introducing lumped capacitors. This technique has significantly reduced the size of the unit element (UE) and enabled operation around the 2 GHz frequency band. The proposed capacitive-loaded structure is highly compact with a wideband transmission response featuring 95% fractional bandwidth (1.2 GHz to 3.1 GHz). The proposed FSMS design architecture is easy to reconfigure for any resonant frequency by tuning the inter-element capacitors. Its small size of 5.3 \(\times\) 5.3 \(\hbox {mm}^2\) enables the design to be used effectively at S, C, and X-band wrapping applications, which is otherwise infeasible with larger UEs. In addition to miniaturization, the design offers high angular stability and polarization insensitivity for different wrapping angles.