SUBPROJECT 1: UPM-INTERSPACE

New Array Antenna Technologies and Digital Processing for the Future Integrated Terrestrial and Space-based Millimeter Wave Radio Systems

OBJECTIVES SUBPROJECT 1:

Project PID2020-112545RB-C51 funded by MCIN/ AEI /10.13039/501100011033

1. Analyisis of new architectures and radio enabling technologies for massive LEO architectures in bands above 60 GHz.

2. Development of new technologies for beam steering and reconfigurability for array antenna systems in Ka, Q, V bands and beyond based on liquid crystals technology and analog beamforming.

3. Identification and development of new digital antenna technologies and work scenarios in the area of terrestrial and space communcation as well as new techniques and algorithms for array processing including new capabilities and reconfigurable architectures.

4. Development of new antenna technologies measurement techniques in Ka, Q, V bands and beyond and improving the performance of the measurement systems in these bands.

 

Publications:

[1] J. Melendro Jiménez, A. Tamayo Domínguez, P. Sánchez Olivares, J. Calatayud Maeso, J. L. Masa Campos and J.M. Fernández González, “Spherically-Conformed Loxodromic 3D Printed Dielectric Polarizer For Dual Circularly Polarized Omnidirectional Radiation in Ka Band Vehicular Communications”, IEEE Trans. on Vehicular Technology, DOI: 10.1109/TVT.2025.3607736, Accepted for publication.

[2] J. Melendro Jiménez, J. Sánchez Castillo, A. Tamayo Domínguez, P. Sánchez Olivares, J. Calatayud Maeso, J. L. Masa Campos and J.M. Fernández González, “Geodesic Lens Antenna with Integrated Dielectric Lens and Anisotropic Polarizer for Multibeam Enhancement and Circular Polarization in the Ka Band”, IEEE Trans. on Antennas and Propagation, DOI: 10.1109/TAP.2025.3620607,  January 2026.

[3] S. Martínez Zamacola, F. Luna Valero and R. Martínez Rodríguez-Osorio, “Hybrid MOEA with problem-specific operators for beam-hopping based resource allocation in multi-beam LEO satellites”, Swarm and Evolutionary Computation, DOI: 10.1016/j.swevo.2025.102174, December 2025.

[4] S. Martínez Zamacola, S. Martín Marco and R. Martínez Rodríguez-Osorio, “Profiling the transmit power of LEO satellite constellations for broadband communication services considering terrestrial and aerial demand”, Acta Astronautica, DOI:10.1016/j.actaastro.2025.06.068, November 2025.

[5] M. Räsänen, J. Ala Laurinaho, A. Di Giovanni, J.M. Fernández González, A.T. Muriel Barrado and V. Viikari, “Profile-Reduced S/X-Band Shared-Aperture Antenna Array with Frequency Selective Surfaces”, Reviews of Electromagnetics, DOI: 10.53792/RoE/2025/25015,  November 2025.

[6] S. García Martínez, D. Santiago, A. Tamayo Domínguez, P. Sánchez Olivares, I. Arregui, T. Lopetegi, M. Laso and J.M. Fernández González, “Robust Filter Design Built in a Contactless Multilayer Waveguide at W-Band”, IEEE Trans. on Microwave Theory and Techniques, DOI: 10.1109/TMTT.2025.3564144,  May 2025.

[7] X. Sun, J. Calatayud Maeso, A.T. Muriel Barrado, J.M. Fernández González and M. Sierra Castañer, “Calibration of a Low-Cost 8×8 Active Phased Array Antenna”, Applied Sciences, DOI: https://doi.org/10.3390/app15074066, April 2025.

[8] J. Calatayud Maeso, X. Sun, A.T. Muriel Barrado, F. Rodríguez Varela, P. Sánchez Olivares, J.M. Fernández González and M. Sierra Castañer, “In-Depth Analysis of Ka-Band Integrated Commercial Beamformer Non-Idealities In Phased Array Calibration and Pattern Prediction Methods for 5G Scenarios”, IEEE Access, DOI: 10.1109/ACCESS.2025.3555140, March 2025.

[9] C. Fontá Romero, F. Rodríguez Varela, B. Galocha Iragüen and J.A. López Pérez, “Fast Surface Error Diagnosis for Radiotelescopes Using Linearized Microwave Holography”, IEEE Trans. on Antennas and Propagation, DOI: 10.1109/TAP.2025.3542619, February 2025.

[10] S. Martínez Zamacola, R. Martínez Rodríguez-Osorio and M. A. Salas Natera, “Joint Satellite Platform and Constellation Sizing for Instantaneous Beam-Hopping in 5G/6G Non-Terrestrial Networks”, Computer Networks, DOI: https://doi.org/10.1016/j.comnet.2024.110942, February 2025.

[11] A. Ertug Zorkun, M. A. Salas Netra, R. Martínez Rodríguez-Osorio and S. Chatzinotas, “Energy Efficient Low-Complexity RIS-Aided 3-D DoA Estimation and Target Tracking Algorithm via Matrix Completion”, IEEE Access, DOI: 10.1109/ACCESS.2024.3511717, December 2024.

[12] R. Verdecia, A.T. Muriel Barrado, J. Calatayud Maeso, P. Sánchez Olivares, J.M. Fernández González and J. I. Alonso Montes, “A Millimeter-Wave Phased Array-Aided 5G Communication Prototype: Evaluation in an Indoor Scenario”, IEEE Access, DOI: 10.1109/ACCESS.2024.3483573, September 2024.

[13] P. Sánchez Olivares, A. Pascual González, A. Tamayo Domínguez and  J.M. Fernández González, “Effective Bandwidth Improvement of Travelling-Wave Waveguide Array Antennas Using Double Parallel-Slot Radiating Elements”,  AEU-International Journal of Electronics and Communications, DOI: https://doi.org/10.1016/j.aeue.2024.155413, September 2024.

[14] J. Melendro Jiménez, P. Sánchez Olivares, A. Tamayo Domínguez, J.L. Masa Campos and J.M. Fernández González, “A Novel Logarithmic-Spiral-Shaped 3D-Printed Dielectric Polarizer for Dual-Circularly Polarized Conical-Beam Radiation Patterns in the Ka Band”,  IEEE Trans. on Antennas and Propagation, DOI: 10.1109/TAP.2024.3415423, August 2024.

[15] A. Ertug Zorkun, M. A. Salas Natera, A. Araujo Pinto, R. Martínez Rodríguez-Osorio and M. Sierra Pérez, “A Mutual Coupling-Based Full Self-Online Calibration Method for Antenna Arrays in Uplink”,  IEEE Open Journal of Antennas and Propagation, DOI: 10.1109/OJAP.2024.3406067, August 2024.

[16] A. Ertug Zorkun, M. A. Salas Natera and R. Martínez Rodríguez-Osorio, “An Improved Hybrid Beamforming Algorithm for Fast Target Tracking in Satellite and V2X Communication”,  Remote sensing, DOI: httpc://doi.org/10.3390/rs16010013, December 2023.

[17] D. Santiago, A. Tamayo Domínguez, M.A.Gómez Laso, T. Lopetegui, J.M. Fernández González, R. Martínez and I. Arregui, “Robust Design of 3D-Printed W-Band Bandpass Filters using Gap Waveguide Technology”,  Journal of Infrared, Millimeter, and Terahertz Waves, DOI: 10.1007/s10762-022-00903-0, February 2023.

[18] J. Melendro-Jimenez, P. Sánchez Olivares, A. Tamayo Domínguez, X. Sun and J.M. Fernández González, “3D Printed Directive Beam-Steering Antenna Based on Gradient Index Flat Lens with an Integrated Polarizer for Dual Circular Polarization at W-band”, IEEE Trans. on Antennas and Propagation, DOI: 10.1109/TAP.2022.3217177, October 2022.

[19] A. Ertug Zorkun, M. A. Salas-Natera and R. Martínez Rodríguez-Osorio, “Improved Iterative Inverse Matrix Approximation Algorithm for Zero Forcing Precoding in Large Antenna Arrays”, IEEE Access, Vol. 10, pp. 100964-100975, DOI: 10.1109/ACCESS.2022.3208155, September 2022.

[20] A. Tamayo Domínguez, P. Sánchez Olivares, A. Camacho Hernández and J.M. Fernández González, “Guidelines for Accurate In-House Electroplating and 3D Printing Processes Applied to mm-Wave Devices”, IEEE Microwave and Wirless Components Letters, DOI: 10.1109/LMWC.2022.3182868, June 2022.

[21] F. Rodríguez Varela, B. Galocha Iragüen and M. Sierra Castañer, “Single-Cut Phaseless Near-Field Measurements for Fast Antenna Testing”, IEEE Trans. on Antennas and Propagation, DOI: 10.1109/TAP.2022.3177525, May 2022.

[22] D. Santiago, A. Tamayo Domínguez and M. A.G. Laso, T. Lopetegi, J.M. Fernández González, R. Martínez and I. Arregui, “Robust Design of 3D-Printed W-Band Bandpass Filters Using Gap Waveguide Technology”, J. Infrared Milli Terahz Waves, DOI: 10.1007/s10762-022-00903-0, 2023.

[23] J.A. Vásquez Peralvo, A. Tamayo Domínguez, G. Pérez Palomino, J.M. Fernández González and T. Wong, “3D Inductive Frequency Selective Structures Using Additive Manufacturing and Low Cost Metallization”, Sensors 2022, DOI: 10.3390/s22020552, 2022.

[24] A. Tamayo Domínguez, J.M. Fernández González and O. Quevedo Teruel, “Mechanically Reconfigurable Waveguide Filter Based on Glide Symmetry at Millimetre Wave”, Sensors 2022, DOI: 10.3390/s22031001, 2022.

SUBPROJECT 2: UVI-INTERSPACE

Measurement and Characterization of Radio Propagation Channel for Future Communication Ecosystem beyond 5G

OBJECTIVES SUBPROJECT 2:

Project PID2020-112545RB-C52 funded by MCIN/ AEI /10.13039/501100011033

1. Design and construction of two agile radio wideband channel sounders for satellite and terrestrial radio environment, rapidly changing and non-stationary, at millimetric band frequencies: Ka, Q, V and W band.

2. Measurement campaign in satellite and terrestrial environments in Ka, Q, V and W band.

3. OTA measurements with developed antennas in real environments.

4. Application of heuristic analysis to both the development of the channel sounder and measurement techniques.

5. Optimization of the estimated radio channel model and its simulation.

6. Study and development of compensation/mitigation techniques for impairments due to propagation mechanisms; determination of the Channel Enhancement Indicator achieved.

Publications:

[1] Luis A. López-Valcárcel, Manuel García Sánchez, “A Wideband Radio Channel Sounder for Non-Stationary Channels: Design, Implementation and Testing”, Electronics, vol. 10, no. 15, pp. 1838, 2021. DOI: https://doi.org/10.3390/electronics10151838

[2] Bram Decoster, Stephanie Maes, Iñigo Cuiñas, Manuel García Sánchez, Rafael Caldeirinha and Jo Verhaevert, “Dual-Band Single-Layer Fractal Frequency Selective Surface for 5G Applications”, Electronics, vol.10, no. 22, pp. 2880, 2021. DOI: https://doi.org/10.3390/electronics10222880

[3] Isabel Expósito Pérez, Cristian Martínez Portas, Manuel García Sánchez, Manuel Sierra Castañer, Iñigo Cuiñas Gómez, “Intercomparación de medida de antenas con reducido número de participante”, Libro de actas del XXXVI Simposio Nacional URSI 2021. 20-24 Septiembre 2021, Universidad de Vigo (España). Presentación oral.

[4] Fidel Alejandro Rodríguez-Corbo, Leyre Azpilicueta, Mikel Celaya-Echarri, Peio Lopez-Iturri, Ana Vázquez Alejos, Raed M. Shubair, Francisco Falcone, “Deterministic and Empirical Approach for Millimeter-Wave Complex Outdoor Smart Parking Solution Deployments”, Sensors, vol. 21, no. 12, pp. 4112, 2021. DOI: https://doi.org/10.3390/s21124112

[5] Fidel Alejandro Rodríguez-Corbo, Leyre Azpilicueta, Mikel Celaya-Echarri, Ana Vázquez Alejos, Francisco Falcone, “Propagation Models in Vehicular Communications”, IEEE Access, vol. 9, pp. 15902 – 15913, 2021. DOI: 10.1109/ACCESS.2021.3049884

[6] Miguel Riobó Prieto, Rob Hofman, Manuel García Sánchez, Íñigo Cuíñas, Isabel Expósito Pérez, Jo Verhaevert, “ Effect of Space Diversity for Fading Mitigation at 40 and 60 GHz Indoor Channels”, 16th European Conference on Antennas and Propagation (EuCAP), Madrid, Spain, March 27 – April 1, 2022. Presentación oral. DOI: 23919/EuCAP53622.2022.9769493

[7] Malo-Torreiro, M. Seijas-Iglesias, I. Cuiñas, “Comparison of Distribution Models for Fast Variations in the Indoor Radio Channel at 5G Frequency Range 1 Microwave Bands”, Electronics, vol. 11, no. 3, pp. 449, 2022. DOI: https://doi.org/10.3390/electronics11030449

[8] Manuel García Sánchez, Carlos Iglesias, Iñigo Cuiñas, and Isabel Expósito, “Building Penetration Losses at 3.5 GHz: Dependence on Polarization and Incidence Angle”, Electronics, vol. 12, no. 1, pp. 106, 2023. DOI: https://doi.org/10.3390/electronics12010106

[9] Leyre Azpilicueta, Cesar Vargas-Rosales, Ana Vazquez Alejos, Francisco Falcone, Chapter 7: “Vehicular Communications in the B5G Era”, Book title: “A Glimpse Beyond 5G in Wireless Networks”, Editorial Springer, ISSN: 978-3-031-13785-3, 2023. DOI: https://doi.org/10.1007/978-3-031-13786-0_7

 

SUBPROJECT 3: UPNA-INTERSPACE

Filters and Passive Components for the Future Integrated Terrestrial and Space-based Millimter Waves Radio Systems

OBJECTIVES SUBPROJECT 3:

Project PID2020-112545RB-C53 funded by MCIN/ AEI /10.13039/501100011033

 

1. Synthesis techniques for devices with smooth profile based on Inverse Scattering and their applications to planar circuits and rectangular waveguide technology.

2. Design of step-impedance filters with advanced frequency response in waveguide technology (wide passband and high selectivity).

3. Design of filters and passive components in contactless technologies such as the Groove Gap Waveguide (GGW) technology for simpler fabrications and enhanced performance at millimeter-waves and above.

4. Filters and passive components by advanced manufacturing techniques such as the 3D Screen Printing, SLM (Selective Laser Melting), micro SLM (or high precision SLM) or stereolithography (SLA).

Publications:

 

Journal papers: 

Autores: Sami, A., Gomez Laso, M.A., Lopetegi, T., Arnedo, I., Calero, I., Teberio, F., Martin Iglesias, P., Benito, D., Arregui, I.

Título: Integrating multiple stubs in stepped-impedance filter aiming for high selectivity

Revista: Electron. Lett., 58: 554-556, 2022. https://doi.org/10.1049/ell2.12517

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA: https://hdl.handle.net/2454/43021)

 

Autores: Beatriz Aja, Sergio Arguedas Cuendis, Ivan Arregui, Eduardo Artal, R. Belén Barreiro, Francisco J. Casas, Marina C. de Ory, Alejandro Díaz-Morcillo, Luisa de la Fuente, Juan Daniel Gallego, Jose María García-Barceló, Benito Gimeno, Alicia Gomez, Daniel Granados, Bradley J. Kavanagh, Miguel A.G. Laso, Txema Lopetegi, Antonio José Lozano-Guerrero, Maria T. Magaz, Jesús Martín-Pintado, Enrique Martínez-González, Jordi Miralda-Escudé, Juan Monzó-Cabrera, Francisco Najarro de la Parra, Jose R. Navarro-Madrid, Ana B. Nuñez Chico, Juan Pablo Pascual, Jorge Pelegrin, Carlos Peña Garay, David Rodriguez, Juan M. Socuéllamos, Fernando Teberio, Jorge Teniente, Patricio Vielva, Iván Vila, Rocío Vilar, Enrique Villa

Título: The Canfranc Axion Detection Experiment (CADEx): search for axions at 90 GHz with Kinetic Inductance Detectors

Revista: Journal of Cosmology and Astroparticle Physics, Volume 2022, November 2022, JCAP11(2022)044. https://doi.org/10.1088/1475-7516/2022/11/044

Disponibilidad: Disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/45319

 

Autores: Santiago, D., Laso, M. A. G., Lopetegi, T., Arregui, I.

Título: Gap waveguide topology with reduced height pins for millimeter-wave components

Revista: URSI Radio Science Letters, 4, 1-5, 2022. https://doi.org/10.46620/22-0029

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/45364)

 

Autores: Santiago, D., Tamayo-Domínguez, A., Laso, M. A. G., Lopetegi, T., Fernández-González, J.-M., Martínez, R., Arregui, I.

Título: Robust design of 3d-printed w-band bandpass filters using gap waveguide technology

Revista: Journal of Infrared, Millimeter, and Terahertz Waves, 44, p. 98–109 (2023). https://doi.org/10.1007/s10762-022-00903-0

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/44571)

 

Autores: Martín-Iglesias, M. Marechal, P. Calves, M. Hazard, L. Pambaguian, A. Brandao, S. Rodriguez Castillo, T. Martin, J. Percaz, V. Iza, S. Martín-Iglesias, I. Arregui, F. Teberio, T. Lopetegi, M. A. G. Laso

Título: Metal 3D printing for RF/microwave high-frequency parts

Revista: CEAS Space J 15, 7–25 (2023). https://doi.org/10.1007/s12567-022-00447-y

Disponibilidad: Disponible en green open access en repositorio institucional UPNA: https://hdl.handle.net/2454/43217

Autores: Percaz, J. M., Hussain, J., Arregui, I., Teberio, F., Benito, D., Martin-Iglesias, P., Arnedo, I., Gómez-Laso, M. A., Lopetegi, T.

Título: Synthesis of rectangular waveguide filters with smooth profile oriented to direct metal additive manufacturing

Revista: IEEE Transactions on Microwave Theory and Techniques, 1-21, 2023. https://doi.org/10.1109/TMTT.2023.3245683

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/45204)

 

Autores: Ahmad, J., Hussain, J., Arregui, I., Martin-Iglesias, P., Arnedo, I., Laso, M., Lopetegi, T.

Título: Enhancement of the peak power handling capability in microstrip filters by employing smooth-profiled conductor strips

Revista: Progress In Electromagnetics Research C, 133, 219-231, 2023. https://doi.org/10.2528/PIERC23040602

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/45497)

 

Autores: Santiago, D., Laso, M. A. G., Lopetegi, T., & Arregui, I.

Título: Novel design method for millimeter-wave gap waveguide low-pass filters using advanced manufacturing techniques

Revista: IEEE Access, 11, 89711-89719, 2023. https://doi.org/10.1109/ACCESS.2023.3305956

Disponibilidad: Gold open Access (también disponible en green open access en repositorio institucional UPNA: https://hdl.handle.net/2454/46122)  

 

Autores: Santiago, D., Fang, M., Zaman, A. U., Laso, M. A. G., Lopetegi, T., Arregui, I.

Título: W-band filtering antenna based on a slot array and stacked coupled resonators using gap waveguide technology

Revista: IEEE Antennas and Wireless Propagation Letters, 23(8)1-5, 2024. https://doi.org/10.1109/LAWP.2024.3399269

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://academica-e.unavarra.es/handle/2454/50284)

 

Autores: Pons-Abenza, A., Arregui, I., Laso, M. A. G., Lopetegi, T., Martin-Iglesias, P.

Título: Design of an additively-manufactured self-supported all-metal coaxial-line X-band bandpass filter

Revista: IEEE Access, 12, 68171-68183, 2024. https://doi.org/10.1109/ACCESS.2024.3399745

Disponibilidad: Gold open Access (también disponible en green open access en repositorio institucional UPNA: https://academica-e.unavarra.es/handle/2454/50285)

 

Autores: Alvarez-Botero, G., Moctezuma-Pascual, E., Laso, M. A. G., Torres-Torres, R.

Título: Assessment of performance of one-turn inductors in series configuration through a transmission-line modeling approach

Revista: IEEE Access, 12, 96404 – 96410, 2024. https://doi.org/10.1109/ACCESS.2024.3426911

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA: https://hdl.handle.net/2454/50292)

 

Autores: Segura-Gómez, C., Biedma-Pérez, A., Santiago, D., Palomares-Caballero, Á., Arregui, I., Laso, M. A. G., Padilla, P.

Título: Cavity-stacked filter in CLAF-SIW technology for millimeter waves.

Revista: AEU – International Journal of Electronics and Communications (2025), 193, 1-7. https://doi.org/10.1016/j.aeue.2025.155725

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/54379)  

 

Autores: Garcia-Martinez, S., Santiago, D., Tamayo-Dominguez, A., Sanchez-Olivares, P., Arregui, I., Lopetegi, T., Laso, M. A. G., Fernandez-Gonzalez, J. M.

Título: Robust filter design built in a contactless metallic multilayer waveguide at W-band

Revista: IEEE Transactions on Microwave Theory and Techniques, 73, 9, 5841-5850, 2025. https://doi.org/10.1109/TMTT.2025.3564144

Disponibilidad: Gold open access) (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/54231)

 

Autores: Baranowski, M., Pons-Abenza, A., Arregui, I., Lopetegi, T., Álvarez-Botero, G., Lamecki, A., Laso, M. A. G., Martin-Iglesias, P.

Título: A 3-D-printing-oriented coaxial-line filter with wide out-of-band rejection

Revista: IEEE Microwave and Wireless Components Letters, 35(9), 1292-1295, 2025.  https://doi.org/10.1109/LMWT.2025.3578244

Disponibilidad: Disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/54365

 

Autores: Pons-Abenza, A., Ahmad, J., Périgaud, A., Arregui, I., Alvarez-Botero, G., Martín-Iglesias, P., Lopetegi, T., Delhote, N., Gómez-Laso, M. A. G.

Título: Rigorous design of compact high-performance 3-D microstrip filters using inverse scattering

Revista: IEEE Microwave and Wireless Technology Letters, 35(12), 1-4, 2025.  https://doi.org/10.1109/LMWT.2025.3605549

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/56006)

 

Autores: Álvarez-Botero, G., Duque-Madrid, N., Lobato-Morales, H., Méndez-Jerónimo, G., Hui, K., Tarabay, N., Pons-Abenza, A., Arregui, I., Lopetegi, T., Laso, M. A. G., Velez, C.

Título: Enhancing magneto-dielectric material characterization by integrating SRR sensor, de-embedding procedure, and artificial neural network modeling

Revista: Radio Science, 60(10), 1-11, 2025. https://doi.org/10.1029/2024RS008214

Disponibilidad: Gold open access) (también disponible en green open access en repositorio institucional UPNA:  https://hdl.handle.net/2454/55890)

 

Autores: Syed Nazim Shah, Syed Ahson Ali Shah, Izaz Ali Shah, Jamal Nasir, Miguel Laso

Título: A Multi-Site Ultra-Miniaturized Circularly Polarized Triple-Band MIMO Antenna for High Data-Rate IoMT Applications

Revista: IEEE Access, Early Access 2025 https://doi.org/10.1109/ACCESS.2025.3635346

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA: https://hdl.handle.net/2454/55978)

 

Autores: Fang, M., Santiago, D., Yang, J., Arregui, I., Laso, M. A. G., Emanuelsson, T., Zaman, A. U., Kishk, A. A.

Título: Dual-band filtering slot array antenna for W-band application

Revista: IEEE Transactions on Antennas and Propagation, 74, 1, Jan. 2026. https://doi.org/10.1109/TAP.2025.3617124

Disponibilidad: Gold open access (también disponible en green open access en repositorio institucional UPNA: https://hdl.handle.net/2454/56095)

 

Conferences:

Autores: Teberio, I. Arregui, P. Martin-Iglesias, M. A. G. Laso

Título: New high manufacturing yield filter design methods and topologies for high-capacity satellites, en WS04 workshop “New Trends in Microwave and mmWave Filters”

Tipo (invitada/oral/poster): Comunicación invitada

Conferencia: 51st European Microwave Conference 2021, London, 2-7 April 2022

Disponibilidad: Programa de la conferencia en https://www.eumw.eu/wp-content/uploads/2025/07/EuMW-2021_compressed.pdf

Autores: Sami, F. Teberio, I. Arnedo, P. Martin-Iglesias, T. Lopetegi, I. Arregui, M. A. G. Laso

Título: High-Performance Stepped-impedance Bandpass Filters for Millimeter-wave Applications

Tipo (invitada/oral/poster): Comunicación oral (online)

Conferencia: 3rd URSI AT-AP-RASC, Gran Canaria, Spain, 29 May – 3 June 2022

Disponibilidad: Disponible en green open Access en https://doi.org/10.5281/zenodo.7343305

 

Autores: Santiago, M.A.G. Laso, T. Lopetegi, I. Arregui

Título: Gap Waveguide Bandpass Filter with Reduced Height Pins for Easy Fabrication

Tipo (invitada/oral/poster): Comunicación oral (online)

Conferencia: 3rd URSI AT-AP-RASC, Gran Canaria, Spain, 29 May – 3 June 2022

Disponibilidad: Disponible en green open access en  https://doi.org/10.5281/zenodo.7930515  

 

Autores: Jabir Hussain, Jamil Ahmad, Ivan Arregui, Petronilo Martin-Iglesias, Israel Arnedo, Miguel A. G. Laso, Txema Lopetegi

Título: High-Power Performance of Smooth-Profiled Rectangular Waveguide Filters

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO’2022), Limoges, France, July 6-8, 2022

Disponibilidad:

 

Autores: Santiago, M. A. G. Laso, T. Lopetegi, I. Arregui

Título: Filtro paso banda en tecnología groove gap waveguide con altura de pines reducida para facilitar su fabricación

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: Simposio Nacional URSI’2022, Málaga, Spain, 5-7 septiembre 2022

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/45363 (repositorio institucional UPNA)

 

Autores: Abdul Sami, Iván Arregui, Txema Lopetegi, Fernando Teberio, Petronilo Martín-Iglesias, Miguel A. G. Laso

Título: High-Performance Stepped-Impedance Bandpass Filters for Microwave and Millimeter-wave Applications, en WM8 workshop “New techniques and foundations for microwave and mm-wave RF filtering devices for emerging communication systems”

Tipo (invitada/oral/poster): Comunicación invitada

Conferencia: 52nd European Microwave Conference 2022, Milan, Italy, September 25-30, 2022

Disponibilidad: Programa de la conferencia en https://www.eumw.eu/wp-content/uploads/2025/07/EuMW-2022_compressed.pdf

 

Autores: Jabir Hussain, Jamil Ahmad, Iván Arregui, Petronilo Martín-Iglesias, Israel Arnedo, Txema Lopetegi, Miguel A. G. Laso

Título: Smooth Profiled Rectangular Waveguide Filters

Tipo (invitada/oral/poster): Comunicación invitada

Conferencia: 52nd European Microwave Conference 2022, Milan, Italy, September 25-30, 2022

Disponibilidad: Programa de la conferencia en https://www.eumw.eu/wp-content/uploads/2025/07/EuMW-2022_compressed.pdf

 

Autores: Jamil Ahmad, Jabir Hussain, Ivan Arregui, Petronilo Martin-Iglesias, Israel Arnedo, Miguel A. G. Laso, Txema Lopetegi

Título: Improvement of Corona Breakdown Threshold (Peak Power Handling) in Smooth-Profiled Microstrip Filters

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: ESA International Workshop on Multipactor, Corona and Passive Intermodulation (MULCOPIM’22), Valencia, Spain, 19-21 October 2022

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/48034 (repositorio institucional UPNA).

 

Autores: Sami, F. Teberio, I. Arnedo, P. Martin-Iglesias, T. Lopetegi, M. A. G. Laso, I. Arregui

Título: Multipactor Breakdown Analysis of Ku-Band Meandered Low-Pass Filter

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: ESA International Workshop on Multipactor, Corona and Passive Intermodulation (MULCOPIM’22), Valencia, Spain, 19-21 October 2022

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/44390 (repositorio institucional UPNA)

 

Autores: Miguel A. G. Laso, Iván Arregui, Israel Arnedo, Txema Lopetegi

Título: Smooth Profiled Microwave Filters

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: 1^st International Workshop on Microwave Research and Applications, July 3-7, 2023, Comarruga, Spain

Disponibilidad: Disponible en green open access en https://doi.org/10.5281/zenodo.18630918 

 

Autores: Santiago, A. Tamayo-Domínguez, M. A. G. Laso, T. Lopetegi, J. M. Fernández-González, R. Martínez, I. Arregui

Título: A 94-GHz SLA-enabled bandpass filter for monopulse radar in space debris detection

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: URSI GASS 2023, Sapporo, Japan, 19 – 26 August 2023

Disponibilidad: Disponible en green open access en https://doi.org/10.5281/zenodo.10433123

 

Autores: Miguel Laso, Iván Arregui, Txema Lopetegi y David Benito

Título: Proyectos de Aprendizaje y Servicio en la UPNA y despliegue de redes de banda ancha en el ámbito rural de Navarra

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXVIII Simposio Nacional de la Unión Científica Internacional de Radio, Cáceres 13-15 septiembre 2023 (pp. 1-4)

Disponibilidad: Disponible en green open acess en https://hdl.handle.net/2454/56347 (repositorio institucional UPNA)

 

Autores: Santiago, D., Tamayo-Domínguez, A., Laso, M. A. G., Lopetegui, T., Fernández-González, J.-M, Martínez, R., Arregui I.

Título: Diseño robusto de filtros paso-banda de banda W en tecnología Gap Waveguide impresos en 3D

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXVIII Simposio Nacional de la Unión Científica Internacional de Radio, Cáceres 13-15 septiembre 2023 (pp. 1-4)

Disponibilidad: Disponible en green open acess en  https://hdl.handle.net/2454/47147 (repositorio institucional UPNA)

 

Autores: García-Martínez, S., Santiago, D., Tamayo-Domínguez, A., Sánchez-Olivares, P., Arregui, I., Lopetegi, T., Fernández González, J. M., Laso, M. Á. G.

Título: Diseño de filtro en guía de onda en banda W mediante guía multicapa con simetría glide

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXVIII Simposio Nacional de la Unión Científica Internacional de Radio, Cáceres 13-15 septiembre 2023 (pp. 1-4).

Disponibilidad: Disponible en green open Access en  https://hdl.handle.net/2454/54728 (repositorio institucional UPNA)

 

Autores: Laso, M. A. G. Sami, A., Lopetegi, J. M., Martin-Iglesias, P., Álvarez-Botero, G. A., Pons-Abenza A., Arregui, I.

Título: Integración de múltiples stubs en filtros de saltos de impedancias de alta selectividad

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXVIII Simposio Nacional de la Unión Científica Internacional de Radio, Cáceres 13-15 septiembre 2023 (pp. 1-4)

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/47146 (repositorio institucional UPNA).

 

Autores: Santiago, M Fang, A U Zaman, J Yang, M A G Laso, T Lopetegi, and I Arregui

Título: Filtering Antenna Based on a Slot Array and Stacked Coupled Resonators Using Gap Waveguide Technology

Tipo (invitada/oral/poster): Comunicación invitada

Conferencia: Gap Waveguide Technology Workshop, Nov. 9-10, 2023, Chalmers Univ., Goteborg (Sweden)

Disponibilidad:

 

Autores: Santiago, D., Laso, M.A.G., Lopetegi, T., Arregui, I.

Título: Robust and flexible design for effective low-pass filters exploiting a passband replica

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: IEEE International Microwave Filter Workshop, IMFW 2024, 21-23 Feb 2024, Cocoa Beach, FL, USA (pp. 35-38). https://doi.org/10.1109/IMFW59690.2024.10477129

Disponibilidad: Disponible en green open access en https://academica-e.unavarra.es/handle/2454/51576 (repositorio institucional UPNA).

 

Autores: Pons Abenza, Jabir Hussain, Iván Arregui, Petronilo Martin-Iglesias, Germán Álvarez, Txema Lopetegi, and Miguel A. G. Laso

Título: High-power effects in satellites, their detrimental effects on signals, and solutions

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: 4th URSI AT-RASC, Gran Canaria, 19-24 May 2024

Disponibilidad: Disponible en green open access en https://doi.org/10.5281/zenodo.18608776

 

Autores: A. Álvarez Botero, H. Lobato Morales, K. Hui, N. Tarabay, J. Sanchez Vargas, G. Méndez Jerónimo, Pons Abenza, I. Arregui, T. Lopetegi, M. A. G. Laso, C. Velez

Título: Integration of Microwave Resonant Sensors and Machine Learning Modeling for Advanced Characterization of Magnetodielectric Composites

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: 2nd International Workshop on Microwave Research and Applications, June 30-July 5, 2024, Comarruga, Spain

Disponibilidad: Disponible en green open access en https://doi.org/10.5281/zenodo.18608501

 

Autores: Pons Abenza, A., Arregui, I., Lopetegi, T., Laso, M. A. G., Álvarez Botero, G. A, Martín Iglesias, P.

Título: Diseño de filtros en tecnología de línea coaxial sin dieléctricos mediante impresión 3D

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXIX Simposio Nacional de la Unión Científica Internacional de Radio, Cuenca, 4-6 septiembre, 2024 (pp. 63-63)

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/51645 (repositorio institucional UPNA).

 

Autores: Álvarez-Botero, G. A., Lobato-Morales, H., Hui, K., Tarabay, N., Sanchez-Vargas, J., Méndez-Jerónimo, G., Pons-Abenza, A., Arregui, I., Lopetegi, T., Laso, M. A. G., Velez, C.

Título: Caracterización de composites magneto-dieléctricos usando sensores resonantes de microondas y redes neuronales

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXIX Simposio Nacional de la Unión Científica Internacional de Radio, Cuenca, 4-6 septiembre, 2024 (pp. 63-63)

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/51644 (repositorio institucional UPNA)

 

Autores: Armendáriz Armenteros, M. A., Vertiz Conde, A., Muro Pérez, A., Martín-Iglesias, P., Laso, M. A. G

Título: Sistema de medición de condiciones atmosféricas basado en el estudio del flujo de muones

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXIX Simposio Nacional de la Unión Científica Internacional de Radio, Cuenca, 4-6 septiembre, 2024 (pp. 63-63)

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/51647 (repositorio institucional UPNA).

 

Autores: Segura-Gómez, C., Biedma-Pérez, A., Santiago, D., Palomares-Caballero, A., Arregui, I., Laso, M. A. G., Padilla, P.

Título: Filtro de cavidades apiladas en tecnología CLAF-SIW para ondas milimétricas

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XXXIX Simposio Nacional de la Unión Científica Internacional de Radio, Cuenca, 4-6 septiembre, 2024 (pp. 63-63)

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/54404 (repositorio institucional UPNA).

 

Autores: Miguel Laso

Título: Microwave developments for satellite and wireless communications

Tipo (invitada/oral/poster): Comunicación invitada

Conferencia: LAMC (Latin America Microwave Conference) 2025 (Puerto Rico, 22-24 Jan. 2025)

Disponibilidad: Programa de la conferencia en https://2025.lamc-ieee.org/technical-program/day1/

 

Autores: Michal Baranowski, Alejandro Pons-Abenza, Ivan Arregui, Txema Lopetegi, German Alvarez-Botero, Michal Mrozowski, Adam Lamecki, Miguel Laso, Petronilo Martin-Iglesias

Título: 3D-Printed Coaxial-Line Filters for Earth Observation applications

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: Space Microwave Week, 12th – 16th May 2025, ESA-ESTEC, Noordwijk, Netherlands

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56292 (repositorio institucional UPNA)

 

Autores: Nathalia Duque Madrid, Miguel Ángel Gómez Laso, Francisco Luna Valero, Iván Arregui, Txema Lopeteg, Alejandro Pons Abenza, Germán Álvarez Botero

Título: Assessment of Machine Learning Models in Characterization of Magnetodielectric Composites

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: 3rd International Workshop on Microwave Research and Applications, June 29-July 4, 2025, Comarruga, Spain

Disponibilidad: Disponible en green open access en https://doi.org/10.5281/zenodo.18608684

 

Autores: Shah, S. N., Nasir, J., Laso, M. A. G.

Título: An ultracompact triple-band circularly polarized MIMO model for wireless capsule endoscopy and midfield power transfer

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: International Symposium ELMAR, Zadar, Croatia, 12-17 September 2025 (pp. 149-152). https://doi.org/10.1109/ELMAR66948.2025.11194036

Disponibilidad: Disponible en green open access en  https://hdl.handle.net/2454/56046 (repositorio institucional UPNA).

 

Autores: Sergio Garcia-Martinez, David Santiago, Adrian Tamayo-Domínguez, Pablo Sanchez-Olivares, Iván Arregui, Txema Lopetegi, Miguel A. G. Laso, Jose Manuel Fernandez-Gonzalez

Título: Fabricación de un Filtro Robusto basado en una Guía de Onda Multicapa Metálica en Banda W

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XL Simposio Nacional URSI 2025, 3-5 septiembre, 2025 (Tarragona)

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56269 (repositorio institucional UPNA)

 

Autores: Iran Bahena-Miranda, Alejandro Pons-Abenza, Gérman Álvarez-Botero, Iván Arregui, Ariel Calzadilla, Txema Lopetegi, Miguel A.G. Laso

Título: Diseño de filtros microstrip 3D utilizando inverse scattering

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XL Simposio Nacional URSI 2025, 3-5 septiembre, 2025 (Tarragona)

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56260 (repositorio institucional UPNA)

 

Autores: Andrés Biedma-Pérez, Cleofás Segura-Gómez, David Santiago, Ángel Palomares-Caballero, Iván Arregui, Miguel A. G. Laso, Pablo Padilla

Título: Tolerancias de la tecnología CLAF-SIW para filtros de cavidades apiladas en frecuencias milimétricas

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XL Simposio Nacional URSI 2025, 3-5 septiembre, 2025 (Tarragona).

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56272 (repositorio institucional UPNA)

 

Autores: Duque-Madrid, M.A.G. Laso, F. Luna, I. Arregui, T. Lopetegi, A. Pons-Abenza, G.A. Álvarez-Botero

Título: Modelos de aprendizaje automático para caracterización de composites magneto-dieléctricos

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XL Simposio Nacional URSI 2025, 3-5 septiembre, 2025 (Tarragona)

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56256 (repositorio institucional UPNA)

 

Autores: Michal Baranowski, Alejandro Pons Abenza, Iván Arregui, Txema Lopetegi, Germán Alvarez-Botero, Adam Lamecki, Miguel Angel Gomez Laso, Petronilo Martín Iglesias

Título: Diseño de Filtro Coaxial Mediante Impresión 3D para Observación de la Tierra

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: XL Simposio Nacional URSI 2025, 3-5 septiembre, 2025 (Tarragona)

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56266 (repositorio institucional UPNA)

 

Autores: Nathalia Duque-Madrid, M.A.G. Laso, Francisco Luna, Alejandro Pons-Abenza, Txema Lopetegi, Iván Arregui, Israel Arnedo, Arancha Sánchez, Silvia Zabala, Eduardo Trébol, Germán Álvarez-Botero

Título: A New Genetic Algorithm Approach for Hybrid-Domain Spectral Signature Design

Tipo (invitada/oral/poster): Comunicación oral

Conferencia: European Microwave Week, 21-26 September 2025, Utrecht, Netherlands

Disponibilidad: Disponible en green open access en https://hdl.handle.net/2454/56291 (repositorio institucional UPNA)

 

 

SUBPROJECT 4: UGR-INTERSPACE

New Electronically Reconfigurable Antenna Technology based on Field Confinement for Future Communication systems beyond 5G

OBJECTIVES SUBPROJECT 4:

Project PID2020-112545RB-C54 funded by MCIN/ AEI /10.13039/501100011033

 

1. Development of design techniques and procedures for fiel-confinement-based devices in Ka, Q, V bands and beyond. Exploration of the design of radiating devices for frequencies beyond W band (up to 330 GHz).

2. Addition of reconfigurability to passive devices based on graphene and graphene-based materials.

3. Development of new techniques for emulation the channel propagation on hybrid reverberation chamber. Exploratory study of the propagation channel performance for frequencies beyond W band.

4. Improvement of the manufacturing capabilities for initial prototypes, reducing the time required for the prototyping cycle.

5. Increase and improvement of the 5G-Lab mesuring capabilities, also maximizing transfer to industry through the offer of mesuring services to companies and research centers.

Publications:

[1] S. Ortiz-Ruiz, M. Pérez-Escribano, S. Moreno-Rodríguez, Á. Palomares-Caballero, J. F. Valenzuela-Valdés, F. G. Ruiz, Carlos Molero “Broadband frequency selective surface absorber based on laser-induced graphene for applications from Ku-band to Q-band”. IEEE Journal of Microwaves, 2025.

[2] A Biedma-Pérez, C. Segura-Gómez, Á. Palomares-Caballero, P. Padilla “Compact H-Plane CLAF-SIW Horn Antenna with Phase Front Correction”. IEEE Access, 2025.

[3] C. Segura-Gómez, L. Wang, A. Biedma-Pérez, Á. Palomares-Caballero, P. Padilla “Substrate Integrated Monopulse Leaky Horn Antenna”. IEEE Antennas and Wireless Propagation Letters 24 (9), 2025.

[4] C. Molero, P. H. Zapata-Cano, A. Alex-Amor “Transfer ABCD Matrix for Time-Varying Media and Time Crystals”. IEEE Transactions on Antennas and Propagation 73 (12), 2025.

[5] M. Baena-Molina, Á. Palomares-Caballero, G. Martínez-García, J. E. Galeote-Cazorla, A. Ramírez-Arroyo, J. F. Valenzuela-Valdés “1-bit mechanically reconfigurable metasurface as a beam splitter for indoor environments at 28 GHz”. IEEE Antennas and Wireless Propagation Letters, 2025.

[6] Á. Palomares-Caballero, M. Pérez-Escribano, C. Molero, P. Padilla, M. García-Vigueras, R. Gillard “Broadband 1-bit Reconfigurable Intelligent Surface at Millimeter Waves: Overcoming PIN-Diode Degradation with Slotline Ring Topology”. IEEE Transactions on Antennas and Propagation 73 (8), 2025.

[7] M. Díaz-Martín, C. Molero, G. Martínez-García, M. Baena-Molina “Low-Cost and Fully Metallic Reconfigurable Leaky-Wave Antenna Based on 3D-Printing Technology for Multi-Beam Operation”. Electronics 14 (23), 2025.

[8] A. Biedma-Pérez, M. Pérez-Escribano, I. Parellada-Serrano, Á. Palomares-Caballero, P. Padilla, M. García-Vigueras, C. Molero “Metal-Only 3D Unit Cell for Reflectarrays with Independent Dual-Band Operation”. IEEE Antennas and Wireless Propagation Letters 24 (7), 2025.

[9] C. Segura-Gómez, A. Biedma-Pérez, D. Santiago, Á. Palomares-Caballero, I. Arregui, M. A. Gómez Laso, P. Padilla “Cavity-stacked filter in CLAF-SIW technology for millimeter waves”. AEU-International Journal of Electronics and Communications 193, 2025.

[10] M. A. Balmaseda-Márquez, G. Valerio, P. Padilla, Á. Palomares-Caballero, J. F. Valenzuela-Valdés, C. Molero “Modelling Partially-Dielectric Unit Cells for OAM Transmitarrays”. IEEE Access, 2024.

[11] S. Moreno-Rodríguez, A. Alex-Amor, P. Padilla, J. F. Valenzuela-Valdés, C. Molero “Space-time metallic metasurfaces for frequency conversion and beamforming”. Physical Review Applied 21 (6), 2024.

[12] J. E. Galeote-Cazorla, A. Ramírez-Arroyo, F. J. López-Martínez, J. F. Valenzuela-Valdés “Empirical Validation of a Class of Ray-Based Fading Models”. IEEE Transactions on Wireless Communications 24 (2), 2024.

[13] A. Ramírez-Arroyo, T. B. Sørensen, P. Beltoft, H. Christiansen, J. F. Valenzuela-Valdés, P. Mogensen “Observations on large-scale attenuation effects in a 26 GHz urban micro-cell environment”. IEEE Wireless Communications Letters 13 (9), 2024.

[14] A. Ramírez-Arroyo, M. López, I. Rodríguez, T. B. Sørensen, S. Caporal del Barrio, P. Padilla, J. F. Valenzuela-Valdés, P. Mogensen “FR2 5G networks for industrial scenarios: Experimental characterization and beam management procedures in operational conditions”. IEEE Transactions on Vehicular Technology 73 (9), 2024.

[15] C. Segura-Gómez, M. Pérez-Escribano, A. Biedma-Pérez, Á. Palomares-Caballero, P. Padilla “Contactless AF-SIW phase shifters based on periodic structures at mmWaves”. AEU-International Journal of Electronics and Communications 179, 2024.

[16] I. Parellada-Serrano, J. Velasco, C. Molero, M. García-Vigueras, P. Padilla “A fully metallic 3-D mmwave reflectarray with independent polarization steering control”. IEEE Transactions on Antennas and Propagation 72 (6), 2024.

[17] M. Pérez-Escribano, A. Palomares-Caballero, P. Padilla, J. F. Valenzuela-Valdés, E. Márquez-Segura “Broadband parasitic modeling of diodes in the millimeter-wave band”. AEU-International Journal of Electronics and Communications 177, 2024.

[18] A. Ramírez-Arroyo, A. Alex-Amor, R. Medina, P. Padilla, J. F. Valenzuela-Valdés “Joint Ultra-Wideband Characterization of Azimuth, Elevation, and Time of Arrival With Toric Arrays”. IEEE Transactions on Wireless Communications 23 (9), 2024.

[19] I. Parellada-Serrano, M. Pérez-Escribano, C. Molero, P. Padilla, V. De La Rubia “Three-dimensional fully metallic dual-polarization frequency-selective surface design using coupled-resonator circuit information”. IEEE Transactions on Antennas and Propagation 72 (3), 2024.

[20] A. Palomares-Caballero, C. Molero, F. Rostami Ghadi, F. J. López-Martínez, P. Padilla, D. Morales-Jimenez, J. F. Valenzuela-Valdés “Enabling intelligent omni-surfaces in the polarization domain: Principles, implementation and applications”. IEEE Communications Magazine 61 (11), 2023.

[21] J. Galeano-Brajones, F. Luna-Valero, J. Carmona-Murillo, P. H. Zapata-Cano, J. F. Valenzuela-Valdés “Designing problem-specific operators for solving the Cell Switch-Off problem in ultra-dense 5G networks with hybrid MOEAs”. Swarm and Evolutionary Computation, 2023.

[22] M. Pérez-Escribano, S. Moreno-Rodríguez, C. Molero, J. F. Valenzuela-Valdés, P. Padilla, A. Alex-Amor “Analytical framework to model reconfigurable metasurfaces including lumped elements”. IEEE Transactions on Circuits and Systems II: Express 71 (4), 2023.

[23] S. Moreno-Rodríguez, A. Alex-Amor, P. Padilla, J. F. Valenzuela-Valdés, C. Molero “Time-periodic metallic metamaterials defined by floquet circuits”. IEEE Access 11, 2023.

[24] A. Alex-Amor, S. Moreno-Rodríguez, P. Padilla, J. F. Valenzuela-Valdés, C. Molero “Analytical equivalent circuits for three-dimensional metamaterials and metagratings”. Physical Review Applied 20 (4), 2023.

[25] A. Ramírez-Arroyo, A. Alex-Amor, P. Padilla, J. F. Valenzuela-Valdés “Joint Direction-of-Arrival and Time-of-Arrival Estimation with Ultra-wideband Elliptical Arrays”. IEEE Transactions on Antennas and Propagation 22 (12), 2023.

[26] A. Alex-Amor, S. Moreno-Rodriguez, P. Padilla, J. F. Valenzuela-Valdes, C. Molero “Diffraction phenomena in time-varying metal-based metasurfaces”. Physical Review Applied 19 (4), 2023.

[27] A. Palomares-Caballero, C. Molero Jiménez, P. Padilla, M. García-Vigueras, R. Gillard “Wideband 3-D-printed metal-only reflectarray for controlling orthogonal linear Polarizations”. IEEE Transactions on Antennas and Propagation 71 (3), 2023.

[28] A. Biedma-Pérez, P. Padilla, C. Segura-Gómez, Á. Palomares-Caballero “Holey SIW Horn Antenna Based on an H-plane Lens-wise Wavefront Collimation”. IEEE Transactions on Antennas and Propagation 71 (1), 2022.

[29] Á. Palomares-Caballero, C. Megías, C. Molero, A. Alex-Amor, P. Padilla “Wideband Gap-Waveguide Phase Shifter Based on a Glide-Symmetric Ridge”. IEEE Microwave and Wireless Components Letters 33 (1), 2022.

[30] C. Segura-Gómez, Á. Palomares-Caballero, P. Padilla “A 1-to-8 Fully Modular Stacked SIW Antenna Array for Millimeter-Wave Applications”. IEEE Transactions on Antennas and Propagation 70 (11), 2022.

[31] A. Ramírez-Arroyo, L. García, A. Alex-Amor, J. F. Valenzuela-Valdés “Artificial Intelligence and Dimensionality Reduction: Tools for approaching future communications”. IEEE Open Journal of the Communications Society 3, 2022.

[32] A. Alex, Á. Palomares, C. Molero “3-D metamaterials: Trends on applied designs, computational methods and fabrication techniques”. Electronics 11 (3), 2022.

[33] S. Moreno-Rodríguez, M. A. Balmaseda-Márquez, J. Carmona-Murillo, A. Palomares-Caballero “Polarization-Insensitive Unit Cells for a Cost-Effective Design of a 3-D-Printed Fresnel-Lens Antenna”. Electronics 11 (3), 2022.

[34] A. Alex-Amor, A. Palomares-Caballero, F. Mesa, O. Quevedo-Teruel, P. Padilla “Dispersion analysis of periodic structures in anisotropic media: Application to liquid crystals”. IEEE Transactions on Antennas and Propagation 70 (4), 2021.

[35] B. Hammu-Mohamed, Á. Palomares-Caballero, C. Segura-Gómez, F. G. Ruiz, P. Padilla “SIW cavity-backed antenna array based on double slots for mmWave communications”. Applied Sciences 11 (11), 2021.

[36] C. Molero, Á. Palomares-Caballero, A. Alex-Amor, I. Parellada-Serrano, F. Gamiz, P. Padilla, J. F. Valenzuela-Valdés “Metamaterial-based reconfigurable intelligent surface: 3D meta-atoms controlled by graphene structures”. IEEE Communications Magazine 59 (6), 2021.

[37] C. Molero, A. Alex-Amor, F. Mesa, A. Palomares, P. Padilla “Cross-polarization control in FSSs by means of an equivalent circuit approach”. IEEE Access 9, 2021.

[38] A. Alex-Amor, F. Mesa, Á. Palomares-Caballero, C. Molero, P. Padilla “Exploring the potential of the multi-modal equivalent circuit approach for stacks of 2-D aperture arrays”. IEEE Transactions on Antennas and Propagation 69 (10), 2021.

[39] Á. Palomares-Caballero, A. Alex-Amor, J. Valenzuela-Valdés, P. Padilla “Millimeter-Wave 3-D-Printed Antenna Array Based on Gap-Waveguide Technology and Split E-Plane Waveguide”. IEEE Transactions on Antennas and Propagation, 2021.

[40] J. Velasco, I. Parellada-Serrano, C. Molero “Fully metallic reflectarray for the Ku-band based on a 3D architecture”. Electronics 10 (21), 2021.