极高频率
材料科学
光学
电介质
毫米
地平面
光电子学
带宽(计算)
液晶
反射(计算机编程)
插入损耗
宽带
基质(水族馆)
反射损耗
光束转向
梁(结构)
天线(收音机)
电信
物理
计算机科学
复合材料
海洋学
复合数
程序设计语言
地质学
作者
Dayan Pérez-Quintana,Erik Aguirre,Eduardo Olariaga,S. А. Kuznetsov,В. И. Лапаник,V. S. Sutormin,V. Ya. Zyryanov,José Antonio Marcotegui,Miguel Beruete
标识
DOI:10.1109/tap.2023.3329666
摘要
This paper reports on the development and evaluation of a reconfigurable millimeter-wave reflectarray based on liquid-crystal (LC) substrate operating in the D-band (105-125 GHz). The reflectarray is composed of a high-impedance surface with a meta-array of 33 × 29 patches on a 2-mm-thick quartz substrate, separated from the ground plane 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 degrees and low insertion losses of 2.5 dB. Furthermore, the device was demonstrated as a proof of concept for 1D beam-steering applications, exhibiting an operational bandwidth of 12 GHz.
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