@misc{10481/105633,
year = {2025},
month = {3},
url = {https://hdl.handle.net/10481/105633},
abstract = {This letter presents a metal-only reflectarray based
on a 3-D unit cell with dual-band capability. The 3-D unit cell is a
square waveguide whose vertical walls include resonator elements
with independent frequency performance. Different resonator geometries are analyzed to obtain a reflected phase variation in the
target frequency band and to be feasible for 3-D manufacturing.
C-shaped and triangle-shaped resonators are selected to obtain
the required phase shift in reflection. A reflectarray prototype
is designed, including pairs of resonators where the C-shaped
resonator controls the low-frequency band, and the triangle-shaped
resonators do so for the high-frequency band. The main reflected
beam directions for each frequency band are different to show
the independent phase tuning of the resonators. The prototype
is manufactured using stereolithography with a subsequent silver
coating. Measured results show realized gains of 21.2 dBi in the
18 GHz band and 23.63 dBi in the 26.75 GHz band, with a good
agreement with the simulated results},
organization = {European Union Next GenerationEU/PRTR (Grant Number: TED2021-129938B-I00, PID2020-112545RB-C54, PDC2023-145862-I00, TED2021-131699B-I00 and IJC2020-043599-I)},
publisher = {IEEE},
title = {Metal-Only 3-D Unit Cell for Reflectarrays With Independent Dual-Band Operation},
doi = {10.1109/lawp.2025.3548310},
author = {Biedma Pérez, Andrés and Pérez Escribano, Mario and Parellada Serrano, Ignacio and Palomares Caballero, Ángel and Padilla De La Torre, Pablo and García-Vigueras, María},
}