A 2.5D miniaturized low-profile ultra-wideband band-stop frequency selective surface

Yuanyuan Li, Guodong Han, Guoguang Cao, Xiaochong Zhang and Zhou Zhang

Journal of Electromagnetic Waves and Applications, 2022, vol. 36, issue 9, 1212-1228

Abstract: This paper proposes a miniaturized UWB band-stop frequency selection surface based on metalized via technology, aiming at the problem of the large cell size and thick profile of the UWB band-stop frequency selection surface. By studying the principle of miniaturization of 2.5D frequency selective surface, a 2.5D ultra-wideband band-stop miniaturized frequency selective surface with high angular stability and low profile is designed. The simulation and test results show that the designed structure can cover the ultra-wideband frequency range of 2.36 GHz ∼ 11.36 GHz, the −10 dB percentage bandwidth is 161.9%, the unit size is $ 0.15\lambda \times 0.15\lambda $ 0.15λ×0.15λ, and the thickness is $ 0.009\lambda $ 0.009λ, where $ \lambda $ λ represents the resonance wavelength in free space. The maximum incident angle can reach 60 degrees for TE and TM polarization. Compared with the existing literature, the designed ultra-wideband band-stop miniaturization frequency selection surface miniaturization is better, and the profile is lower.

Date: 2022
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DOI: 10.1080/09205071.2021.2011788

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