In this paper, a design, fabrication and characterisation of metasurfaces with the anisotropic response for millimetre waves (MMW) have been presented for the seamless, secure and low-loss high-frequency communication. Two frequency bands, 29 GHz and 60 GHz have been selected for the development of an efficient, cost-effective and broadband metasurfaces constituting an octa-armed star-shaped and symmetric dual orthogonally I-shaped structures respectively. Low-cost and highperformance nanoscale printing inks and pastes have been deployed in the screen printing technique in order to perform the fabrication of designed metasurfaces on the flexible films. Electromagnetic (EM) characteristics of the proposed metasurfaces are evaluated by using the state-of-the-art testing facilities to demonstrate their potential performance attributes in wavepropagation at MMW for high data rate communication links.
This paper demonstrates a design, fabrication and performance evaluation of a frequency selective 60-GHz flexible metasurface in order to facilitate an unobstructed, secure, and low-loss high-frequency signal propagation. The high-attenuation 60 GHz millimeter-wave (MMW) band is selected for the design of a broadband metasurface. The symmetric metasurface unit-cell structure comprises of an assembly of a circular metallic ring embedded with a square-shaped ring. The screen printing process is deployed to perform fabrication of the metasurface on flexible films by means of highly-conductive nanoparticle copper pastes. Electromagnetic (EM) characteristics of the proposed structure are examined by using the quasi-optic bench testing facility in order to validate its potential contribution in the high data-rate communication links. The proposed ultra-thin and flexible metasurface can be integrated on walls and windows as wallpaper to enhance the wireless signal propagation in highly-dense indoor scenarios.
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