@article{10902/37919, year = {2025}, month = {7}, url = {https://hdl.handle.net/10902/37919}, abstract = {In this study we explored the chiral behavior of a honeycomb-like chiral metamaterial with a negative Poisson’s ratio. This type of structure is widely used in sectors such as construction and packaging, but is not as common in electromagnetics/electrical engineering. Moreover, in contrast with typical layer-by-layer chiral metamaterial structures, which are usually formed by metallic patterns with C4 symmetry, this hexachiral structure presents C6 symmetry. The aim of this paper is analyzing the electromagnetic behavior of this kind of auxetic metamaterial with special attention to its chiral behavior. This structure is analyzed by means of measurements and simulations of its reflection and transmission responses (scattering parameters) in different configurations, showing that a dual-layer configuration with conjugated faces provides high electromagnetic activity (gyrotropy) with low losses.}, organization = {This research was funded by the Spanish Ministry of Science and the European Union: MCIN/AEI/10.13039/501100011033/FEDER, UE, grant number PID2022-137619NB-I00, and also Projects PGC2018-098350-BC21 and PGC2018-098350-B-C22.}, publisher = {MDPI}, publisher = {Electronics, 2025, 14(13), 2521}, title = {A hexagonal bi-isotropic honeycomb in PCB}, author = {Barba García, Ismael and Fernández Fernández, Óscar and Gómez Gómez, Álvaro and Grande Sáez, Ana María and López Cabeceira, Ana Cristina}, }