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This paper presents recent developments in Liquid Crystal-based reflectarray antennas for mm-wave applications, future perspectives for this technology and its particular use in SATCOM applications.
A 50.22 × 48.6 mm beam-scanning reflectarray based on liquid crystals (LCs) has been designed to operate over a bandwidth of 5.5% in the low THz frequency range. The structure consists of a single-layer multi-resonant periodic array with unit-cells composed of three parallel unequal length dipoles. The gap between the array and ground plane is filled with electronically tunable LC which exhibits a...
An electromagnetic modeling has been presented for an accurate analysis of reconfigurable reflectarray cells based on liquid crystals (LC). The proposed modeling considers both the inhomogeneity and anisotropic effects, which are calculated by using a simplified molecular model for the behavior of the LC when it is excited by an electrostatic field. The inhomogeneity of the LC is analyzed by dividing...
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