Journal
IET MICROWAVES ANTENNAS & PROPAGATION
Volume 16, Issue 9, Pages 567-573Publisher
WILEY
DOI: 10.1049/mia2.12264
Keywords
angular stability; dual-stopband; frequency selective surface; polarisation stability; via-based structure
Funding
- National Natural Science Foundation of China [61971435]
- Natural Science Foundation of Shaanxi Province [2020JM-342, 2022JM-352, 2022JQ-630]
- National Key Research and Development Program China [2017YFA0700201]
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In this paper, a novel dual-stopband frequency selective surface (FSS) based on the knitted and strong-coupled structures is proposed. Experimental results show that the proposed structure works stably at different incident angles, demonstrating good angular stability and polarization insensitivity.
In this paper, a novel dual-stopband frequency selective surface (FSS) based on the knitted and strong-coupled structures is proposed. The proposed FSS works stably at frequencies of 2.51 and 5.06 GHz for both TE and TM mode, even when the incident angles vary from 0 degrees to 75 degrees. The element size and thickness of the proposed structure are lambda(0)/16 and lambda(0)/170, respectively, where lambda(0) represents the free-space wavelength. To clarify the operating principle, a general equivalent circuit model (ECM) is developed. A prototype of the proposed FSS is fabricated and measured. It is demonstrated that the proposed structure has good angular stability, polarisation insensitivity, and independent operation in the dual-stopband. Importantly, the proposed structure has good prospects for application in dual-band electromagnetic shielding in complex environments.
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