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Dualband frequency-selective surfaces using substrate-integrated waveguide technology

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5 Author(s)
Luo, G.Q. ; Dept. of Radio Eng., Southeast Univ., Nanjing ; Hong, W. ; Tang, H.J. ; Chen, J.X.
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This paper proposes a dualband frequency-selective surface (FSS) based on substrate-integrated waveguide (SIW) technology. This novel dualband FSS is constructed using double square loop slots (DSLSs) and an SIW cavity. Its frequency performance is investigated by numerical simulation using the finite difference frequency domain (FDFD) method. Another dualband FSS, constructed using convoluted double square loop slots (CDSLSs) and an SIW cavity is also investigated in order to get close passband spacing. Simulation results show that these dualband FSSs have the advantages of higher selectivity and passband insensitivity to the incident angles and polarisations, compared with conventional multiband FSSs. Experiments are carried out to verify the simulated results, and the measured results show a promising performance of the proposed FSS

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Microwaves, Antennas & Propagation, IET  (Volume:1 ,  Issue: 2 )