Abstract
This paper presents a novel pixel geometry for the implementation of metasurfaces requiring synchronized phase propagation of transverse magnetic (TM) and transverse electric (TE) modes. The pixel is composed by an elliptical metallic patch with an asymmetric cross-shaped aperture in the center, printed on a grounded slab. A practical implementation of a metasurface was carried out employing such a pixel geometry. Simulation results show similar frequency dispersion properties for both modes within the working frequency band, in agreement with the theoretical basis.
Highlights
Metasurfaces (MTSs) are composed of a dense layer of subwavelength metallic elements, called pixels [1,2,3], printed on top of a grounded substrate
Two transverse magnetic (TM) and transverse electric (TE) modes are excited by a magnetic dipole oriented towards the y-axis
The TM and TE modes were appropriately excited on the structure, with propagation that was synchronized and in-phase
Summary
Metasurfaces (MTSs) are composed of a dense layer of subwavelength metallic elements, called pixels [1,2,3], printed on top of a grounded substrate. Bounded slow surface waves (SWs) can be guided on these structures with engineered dispersion properties. This is the case for the near-field plates, planar lenses and cloaking structures found in the literature [4,5,6,7]. Based on the transverse resonance condition, such structures have been characterized by means of scalar or tensor surface impedances [1]. Several studies have been carried out to analytically characterize the dispersion properties of the TM mode within circular, elliptical and slotted patches printed on top of a grounded slab [8,9,10,11,12]
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