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Wideband Absorptive Frequency-Selective Reflector Based on Split-Ring Resonator Embedded with Chip-Resistor
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  • Bingyan Zhou,
  • Binchao Zhang,
  • Baihong Chi,
  • Cheng Jin
Bingyan Zhou
Beijing Institute of Technology
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Binchao Zhang
Tsinghua University
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Baihong Chi
Chinese Academy of Sciences Aerospace Information Research Institute
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Cheng Jin
Beijing Institute of Technology

Corresponding Author:[email protected]

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Abstract

A wideband absorptive frequency-selective reflector (AFSR) based on split-ring resonator (SRR) embedded with chip-resistor is proposed in this letter. A wide absorption band is achieved by the excitation of the multimode resonance by two dipoles. The insertion of SSRs in the dipoles is able to bypass the losses in the passband, thus allowing the structure to open a wide window of transmittance in addition to achieving broadband absorption performance. The upper structure consists of a dipole in series with two SSRs, while the lower structure consists of only one. The upper and lower structures are grouped together and rotated by 90° around the Z-axis to form the final dual-polarization 3D-AFSR. The simulated results demonstrate that, reflection coefficients below -10dB are seen between 6.74 ~ 9.31 GHz and 16.91 ~ 19.61 GHz under normal incidence, with a total fractional bandwidth of 46.8%. It also has a wide reflection band from 10.69 GHz to 15.44 GHz, and the entire profile is 0.17 λL, where λL is lowest operating frequency.
28 May 2024Submitted to Electronics Letters
29 May 2024Submission Checks Completed
29 May 2024Assigned to Editor
29 May 2024Review(s) Completed, Editorial Evaluation Pending
08 Jun 2024Reviewer(s) Assigned