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This article introduces a simple microwave absorber design that utilizes resistive ink for C and X bands applications. The double-layer structure comprises resistive patterns printed on a 0.2 mm FR4 substrate. In between the upper and lower layers, an air gap is sandwiched. The proposed design achieves a 90% absorption bandwidth in the 3.62–12.18 GHz frequency band. The structure is polarization independent and has good angular performance for both transverse electric (TE) and transverse electric (TM) modes. A transmission line-based equivalent circuit layout is further provided to comprehend the absorption process.

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A Dual-Layer Microwave Absorber Using Resistive Ink for C and X Band Applications

  • 会议论文

  • 发表日期：

    2025年

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  • Satya Prasad Mishra,
  • Sudipta Maity

摘要

This article introduces a simple microwave absorber design that utilizes resistive ink for C and X bands applications. The double-layer structure comprises resistive patterns printed on a 0.2 mm FR4 substrate. In between the upper and lower layers, an air gap is sandwiched. The proposed design achieves a 90% absorption bandwidth in the 3.62–12.18 GHz frequency band. The structure is polarization independent and has good angular performance for both transverse electric (TE) and transverse electric (TM) modes. A transmission line-based equivalent circuit layout is further provided to comprehend the absorption process.