首页|A dual-broadband h-shaped metasurface for cross-polarization and asymmetric transmission with high stable incidence angle
A dual-broadband h-shaped metasurface for cross-polarization and asymmetric transmission with high stable incidence angle
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NSTL
Elsevier
This letter presents a bi-layered chiral metasurface to achieve angularly stable dual-broadband cross-polarization conversion and asymmetric transmission properties of electromagnetic waves with linear polarization. In this regard, any unit cell of the recommended chiral metasurface consists of two new h-shaped resonators configured on two opposite sides of a dielectric slab. Investigations of the simulated and experimental electromagnetic responses validate that the impinging x - (y-) and y - (x-) polarized waves can convert into transmitted y (x-) and x - (-y) polarized waves at 7.5-8.6 GHz and 15-16.6 GHz, if the incident waves pass through the structure along -z (+z) direction, respectively. The obtained polarization conversion ratio (PCR) and asymmetric transmission parameters are more than 0.9 and 0.55 at both operated frequency bands, sequentially. Therefore, the proposed CMS has a significant potential to transform x- and y- polarized waves to orthogonal ones over the related frequency bands. The mechanism of the polarization conversions for any incident polarized wave has been verified by studying surface current distributions.
NSTL
Elsevier
