Coupled complementary metasurfaces (CCMTS) exhibit a passband whose frequency is several times lower than that of the individual metasurface (MTS) passband frequency. In this paper, we explain this phenomenon and propose a simple and accurate equivalent circuit for CCMTS comprised of slots and their Babinet complement, dipoles. An equivalent circuit is extracted from a coupled EFIE-MFIE equation using a synthetic basis function. The same procedure can be conveniently applied to any CCMTS. The model allows one to estimate the large downshift of resonant frequency and the bandwidth utilizing a simple formula. When used in a subresonant regime, the unit cell may have a dimension of a tenth of a free space wavelength with a moderate value of permittivity between the complementary layers.
|Titolo:||Equivalent circuit model for coupled complementary metasurfaces|
MACI, STEFANO (Corresponding)
|Citazione:||Bukhari, S.S., Whittow, W.G., Vardaxoglou, J.C., & Maci, S. (2018). Equivalent circuit model for coupled complementary metasurfaces. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 66(10), 5308-5317.|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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