A reconfigurable aperture-coupled reflectarray cell, based on the use of a liquid crystal substrate, is investigated to operate within the Ka-band, for 5G applications. A liquid crystal cavity is filled between the phasing line and the ground plane, to implement the proposed phase tuning mechanism. A new highly anisotropic liquid crystal material for high-frequency applications is adopted, offering improved phase ranges (? 350°) and low losses (< - 3dB) at the central operating frequency f0=27 GHz. The potentialities of the adopted aperture-coupled configuration are properly exploited to achieve a good phase-reconfigurability within a quite large frequency band of about 17%.
Liquid Crystal-Based Reconfigurable Reflectarray Cells for 5G Systems
Costanzo S.;Venneri F.;Di Massa G.
2019-01-01
Abstract
A reconfigurable aperture-coupled reflectarray cell, based on the use of a liquid crystal substrate, is investigated to operate within the Ka-band, for 5G applications. A liquid crystal cavity is filled between the phasing line and the ground plane, to implement the proposed phase tuning mechanism. A new highly anisotropic liquid crystal material for high-frequency applications is adopted, offering improved phase ranges (? 350°) and low losses (< - 3dB) at the central operating frequency f0=27 GHz. The potentialities of the adopted aperture-coupled configuration are properly exploited to achieve a good phase-reconfigurability within a quite large frequency band of about 17%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
