(IEEE, 2024) Pérez Quintana, Dayan; Aguirre Gallego, Erik; Olariaga Jauregui, Eduardo; Kuznetsov, Sergei A.; Lapanik, Valeri I.; Sutormin, Vitaly S.; Zyryanov, Victor Ya; Marcotegui Iturmendi, José Antonio; Beruete Díaz, Miguel; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Institute of Smart Cities - ISC
This article reports on the development and evaluation of a reconfigurable millimeter-wave reflectarray (RA)
based on liquid-crystal (LC) substrate operating in the D-band
(105–125 GHz). The RA is composed of a high-impedance
surface (HIS) with a meta-array of 33 × 29 patches on a
2-mm-thick quartz substrate, separated from the ground plane
(GP) by a 40-µm-thick LC layer. A novel LC composition with
low dielectric losses (<0.003) and high dielectric anisotropy
(>1.3) has been developed for operation at millimeter waves.
The results demonstrate a reflection phase tunability of 210◦
and low insertion losses of 2.5 dB. Furthermore, the device
was demonstrated as a proof of concept for 1-D beam-steering
applications, exhibiting an operational bandwidth of 12 GHz.
