2026-05-31T04:33:23Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/316022026-02-03T11:17:37Zcom_10630_2254col_10630_37953

Time-Domain Characterization of Nematic Liquid Crystals Using Additive Manufacturing Microstrip Lines. Mateos-Ruiz, Pablo Pérez-Escribano, Mario Hernández-Escobar, Alberto Abdo-Sánchez, María Elena Márquez-Segura, Enrique Martín-Guerrero, Teresa María Camacho-Peñalosa, Carlos Cristales líquidos Redes de banda ancha This paper presents a method for effectively characterizing the dielectric permittivity of nematic liquid crystals across a broad frequency range. These materials show significant potential for reconfigurable devices operating in microwave and millimeter-wave frequencies. To achieve this goal, an additive manufacturing technique is used to create a microstrip line that can be filled with liquid that acts as its substrate. The liquid crystal (LC) is then biased to modulate its permittivity. After manufacturing, a time-gating approach is used to extract the permittivity, eliminating the need for in-fixture calibration, such as Thru-Reflect-Line (TRL). Finally, the approach is validated through simulations and experimental results, which closely align with those reported using other methods in the bibliography. 2024-06-13T08:56:45Z 2024-06-13T08:56:45Z 2024-06-13T08:56:45Z 2024 journal article https://hdl.handle.net/10630/31602 10.1109/TIM.2024.3413162 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional IEEE