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In this letter, we propose to design dual-bandpass frequency selective surface (FSS) based on both the intra- and inter-element couplings. To obtain the two broadband passbands, antisymmetric modes are introduced alternatively by intra- and inter-element couplings of the bi-layered structure. By retrieving the effective surface electromagnetic parameters, the transmission performance of the FSS is...
A mechanically tunable planar left-handed metamaterial (LHM) using SRR pairs was presented. The two identical SRRs of a SRR pair unit cell are etched on two separate substrates so that the coupling between the two SRRs can be adjusted by slipping one SRR relative to the other. The tunable planar LHM was investigated. The results show that the tunable planar LHM can be tuned within a broad range continuously,...
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