Metasurfaces for Filter Miniaturization and Out-of-Band Rejection Improvement

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Abstract

This work presents a novel implementation of metasurface filters with high performance and compact size for future space applications. A $K$ -band fourth-order metasurface filter is proposed with a center frequency of 18.5 GHz and bandwidth of 400 MHz with an out-of-band rejection that is better than 30 dB over the range of 20–50 GHz. The proposed filter has a measured insertion loss of 1.47 dB and a quality factor of 670. The resonators implemented in this filter exhibit a miniaturization of 63% when compared to a conventional rectangular waveguide (RWG) resonator. The compact size and high-performance capabilities make the proposed filter an ideal solution for space applications.
Original languageEnglish
Article number10004850
Pages (from-to)1-4
Number of pages4
JournalIEEE Microwave and Wireless Technology Letters
VolumePP
Issue number99
DOIs
Publication statusAccepted/In press - 2 Jan 2023

Keywords

  • Resonators
  • Metasurfaces
  • Q-factor
  • Photonic band gap
  • Periodic structures
  • Resonant frequency
  • Passband

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