2026-05-27T05:30:00Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/452432026-02-07T00:47:21Zcom_10630_2254col_10630_37959

00925njm 22002777a 4500 dc Alex-Amor, Antonio author Pérez-Escribano, Mario author Muriel Barrado, Alfonso Tomás author Moreno Rodríguez, Salvador author Rodríguez-Padilla, Pablo author Molero, Carlos author 2025 This paper details how to exploit the introduction of time as a design variable to enhance the properties of conventional static (time-invariant) spatially-periodic metastructures such as Frequency Selective Surfaces (FSS). Here, we focus on communications scenarios, although most of the discussed concepts are also applicable in radar systems. We show that, by tuning the temporal period in time-modulated 1D metallic gratings, two different diffracted harmonic configurations mn and m′n′ can propagate in the same direction (i) with different output frequencies (same incident angles and frequencies), (ii) with identical output frequencies (different incident angles, same incident frequencies), (iii) with identical output frequencies (different incident angles and frequencies). These results reveal the potential of space-time metastructures to act as beamformers and frequency mixers. https://hdl.handle.net/10630/45243 Radiofrecuencia Superando los Límites Pasivos en Sistemas de Comunicaciones con Modulaciones Temporales