@article {educsci16050713,
	title = {Gamification in Radiocommunications: A Board Game Approach to Boost Engagement and Learning},
	journal = {Education Sciences},
	volume = {16},
	number = {5},
	year = {2026},
	abstract = {Courses in electromagnetism and related technical subjects are often dominated by lecture-heavy instruction and complex mathematical concepts, which can make it difficult for students to stay engaged. This is particularly problematic in today{\textquoteright}s hyper-digitalized society, where constant screen exposure and shortened attention spans challenge traditional learning methods. While computer-based tools and hands-on laboratories offer some pedagogical improvements, they often fall short in terms of interactivity, dynamism, adaptiveness, and student engagement. In an effort to enrich the learning experience and boost student motivation, we have created a gamified learning activity for the undergraduate course {\textquotedblleft}Radiocommunications{\textquotedblright}{\textemdash}commonly referred to as Antennas and Propagation in other institutions{\textemdash} implemented in the form of a question-based board game. The activity, carried out over three academic years, is fully aligned with the course syllabus and encourages active learning, healthy competition, and collaborative problem-solving. Custom-made materials{\textemdash}including a game board, 270 question cards, wildcards, and incentive-based rewards{\textemdash}were developed specifically for this purpose. The qualitative results from a student survey, together with statistical evidence from hypothesis testing, suggest that the activity enhances conceptual understanding, helps students connect ideas across related subjects, and contributes to a more motivating and enjoyable learning experience.},
	issn = {2227-7102},
	doi = {10.3390/educsci16050713},
	url = {https://www.mdpi.com/2227-7102/16/5/713},
	author = {Domenech, Ana S. and Alex-Amor, Antonio}
}
@article {85sy-qbk6,
	title = {Kapitza-inspired stabilization of non-Foster circuits via time modulations},
	journal = {Phys. Rev. Appl.},
	volume = {24},
	year = {2025},
	month = {Aug},
	pages = {024022},
	publisher = {American Physical Society},
	doi = {10.1103/85sy-qbk6},
	url = {https://link.aps.org/doi/10.1103/85sy-qbk6},
	author = {Alex-Amor, Antonio and Ptitcyn, Grigorii and Engheta, Nader}
}
@article {11145284,
	title = {Transfer ABCD Matrix for Time-Varying Media and Time Crystals},
	journal = {IEEE Transactions on Antennas and Propagation},
	volume = {73},
	number = {12},
	year = {2025},
	pages = {10931-10936},
	keywords = {ABCD parameters, Microwave amplifiers, Microwave communication, microwave filters, Microwave theory and techniques, Microwave transistors, network analysis, Nonhomogeneous media, Power transmission lines, S-matrix, scattering parameters, Slabs, temporal slabs, time crystal, Time-varying systems, Transmission line matrix methods},
	doi = {10.1109/TAP.2025.3602115},
	author = {Molero, Carlos and Zapata-Cano, Pablo. H. and Alex-Amor, Antonio}
}
@article {10309209,
	title = {Analytical Framework to Model Reconfigurable Metasurfaces Including Lumped Elements},
	journal = {IEEE Transactions on Circuits and Systems II: Express Briefs},
	volume = {71},
	number = {4},
	year = {2024},
	pages = {1784-1788},
	keywords = {Analytical framework, equivalent circuits, finite element analysis, Floquet expansion, Gratings, Harmonic analysis, Integrated circuit modeling, lumped elements, Metasurfaces, oblique incidence, reconfigurable, Resistors},
	doi = {10.1109/TCSII.2023.3330318},
	author = {P{\'e}rez-Escribano, Mario and Moreno-Rodr{\'\i}guez, Salvador and Molero, Carlos and Valenzuela-Vald{\'e}s, Juan F. and Padilla, Pablo and Alex-Amor, Antonio}
}
@article {10477894,
	title = {Joint Ultra-Wideband Characterization of Azimuth, Elevation, and Time of Arrival With Toric Arrays},
	journal = {IEEE Transactions on Wireless Communications},
	volume = {23},
	number = {9},
	year = {2024},
	pages = {10990-11000},
	keywords = {3D characterization, Azimuth, Direction-of-arrival (DoA), Direction-of-arrival estimation, Estimation, Geometry, propagation, Three-dimensional displays, time-of-arrival (ToA), toric arrays, Wideband, wireless channels, Wireless communication},
	doi = {10.1109/TWC.2024.3377539},
	author = {Ram{\'\i}rez-Arroyo, Alejandro and Alex-Amor, Antonio and Medina, Rub{\'e}n and Padilla, Pablo and Valenzuela-Vald{\'e}s, Juan F.}
}
@article {PhysRevApplied.21.064018,
	title = {Space-time metallic metasurfaces for frequency conversion and beamforming},
	journal = {Phys. Rev. Appl.},
	volume = {21},
	year = {2024},
	month = {Jun},
	pages = {064018},
	publisher = {American Physical Society},
	doi = {10.1103/PhysRevApplied.21.064018},
	url = {https://link.aps.org/doi/10.1103/PhysRevApplied.21.064018},
	author = {Moreno-Rodr{\'\i}guez, Salvador and Alex-Amor, Antonio and Padilla, Pablo and Valenzuela-Vald{\'e}s, Juan F. and Molero, Carlos}
}
@article {PhysRevB.110.235125,
	title = {Transient states to control the electromagnetic response of space-time dispersive media},
	journal = {Phys. Rev. B},
	volume = {110},
	year = {2024},
	month = {Dec},
	pages = {235125},
	author = {Zapata-Cano, Pablo H. and Moreno-Rodr{\'\i}guez, Salvador and Amanatiadis, Stamatios and Alex-Amor, Antonio and Zaharis, Zaharias D. and Molero, Carlos}
}
@article {PhysRevApplied.20.014063,
	title = {Analysis of Metallic Space-Time Gratings Using Lorentz Transformations},
	journal = {Phys. Rev. Appl.},
	volume = {20},
	year = {2023},
	month = {Jul},
	pages = {014063},
	publisher = {American Physical Society},
	doi = {10.1103/PhysRevApplied.20.014063},
	url = {https://link.aps.org/doi/10.1103/PhysRevApplied.20.014063},
	author = {Alex-Amor, Antonio and Molero, Carlos and Silveirinha, M{\'a}rio G.}
}
@article {PhysRevApplied.20.044010,
	title = {Analytical equivalent circuits for three-dimensional metamaterials and metagratings},
	journal = {Phys. Rev. Appl.},
	volume = {20},
	year = {2023},
	month = {Oct},
	pages = {044010},
	publisher = {American Physical Society},
	doi = {10.1103/PhysRevApplied.20.044010},
	url = {https://link.aps.org/doi/10.1103/PhysRevApplied.20.044010},
	author = {Alex-Amor, Antonio and Moreno-Rodr{\'\i}guez, Salvador and Padilla, Pablo and Valenzuela-Vald{\'e}s, Juan F. and Molero, Carlos}
}
@article {PhysRevApplied.19.044014,
	title = {Diffraction Phenomena in Time-Varying Metal-Based Metasurfaces},
	journal = {Phys. Rev. Appl.},
	volume = {19},
	year = {2023},
	month = {Apr},
	pages = {044014},
	publisher = {American Physical Society},
	doi = {10.1103/PhysRevApplied.19.044014},
	url = {https://link.aps.org/doi/10.1103/PhysRevApplied.19.044014},
	author = {Alex-Amor, Antonio and Moreno-Rodr{\'\i}guez, Salvador and Padilla, Pablo and Valenzuela-Vald{\'e}s, Juan F. and Molero, Carlos}
}
@article {10109651,
	title = {Joint Direction-of-Arrival and Time-of-Arrival Estimation With Ultra-Wideband Elliptical Arrays},
	journal = {IEEE Transactions on Wireless Communications},
	volume = {22},
	number = {12},
	year = {2023},
	pages = {9187-9200},
	keywords = {broadband communications, Direction-of-arrival (DoA), Direction-of-arrival estimation, elliptical arrays, Estimation, Phased arrays, propagation, Sensor arrays, Time of arrival estimation, time-of-arrival (ToA), Ultra wideband technology, wireless channels, Wireless communication},
	doi = {10.1109/TWC.2023.3268949},
	author = {Ram{\'\i}rez-Arroyo, Alejandro and Alex-Amor, Antonio and Padilla, Pablo and Valenzuela-Vald{\'e}s, Juan F.}
}
@article {10287949,
	title = {Time-Periodic Metallic Metamaterials Defined by Floquet Circuits},
	journal = {IEEE Access},
	volume = {11},
	year = {2023},
	pages = {116665-116673},
	keywords = {duty cycle, FDTD, Floquet circuit, Harmonic analysis, Integrated circuit modeling, macroperiod, Magnetic materials, Metals, Metamaterials, Modulation, modulation ratio, Transient analysis},
	doi = {10.1109/ACCESS.2023.3325909},
	author = {Moreno-Rodr{\'\i}guez, Salvador and Alex-Amor, Antonio and Padilla, Pablo and Valenzuela-Vald{\'e}s, Juan F. and Molero, Carlos}
}
