Recent Conference Papers:

• Lopez-Villegas, J.M.; Vidal, N.; Hybrid implementation of a compact 2-way Wilkinson power divider/combiner for applications in the low RF band, IEEE/MTT-S International Microwave Symposium (IMS), 2023.
• Lopez-Villegas, J.M.; Vidal, N.; Salas, A.; Sieiro, J.; Additive Manufacturing Techniques for Fully 3D RF Components and Antennas, XXXVIII Simposio Nacional de la Unión Científica Internacional de Radio (URSI), 2023.
• Lopez-Villegas, J.M.; Vidal, N.; Characterization of 3D printing dielectric materials for RF and Microwave applications, International Workshop on MIcrowave Research and Applications, 2023.
• Lopez-Villegas, J.M.; Vidal, N.; Salas, A.; Sieiro, J.J., 3D printing platform for RF components and circuits, XXXVII Conference on Design of Circuits and Integrated Systems (DCIS), 2022.
• Lopez-Villegas, J.M.; Salas, A.; Vidal, N., 3D-printed Broadband Impedance Transformers Using Helical-microstrip Transmission Line Segments, IEEE/MTT-S International Microwave Symposium (IMS), 2020.
• Vidal, N. ; Salas-Barenys, A.; Garcia, A.; Romeu, J.; González, G.; Jofre, Ll.; Lopez-Villegas, J.M., Design and Characterization of Non-planar 3D-printed Passive UHF-RFID Tag, XXXV Conference on Design of Circuits and Integrated Systems (DCIS), 2020.
• Salas-Barenys, A.; Vidal, N. ; Lopez-Villegas, J.M., Compact 3D-Printed Folded Branch-Line Hybrid Coupler based on Helical-Microstrip Transmission Lines, , XXXV Conference on Design of Circuits and Integrated Systems (DCIS), 2020.
• Lopez-Villegas, J.M.; Salas, A.; Vidal, N.; Sieiro, J., Study of 3D-printed Helical-Microstrip Transmission Lines, IEEE MTT-S International Microwave Symposium (IMS), 1221-1224, 2019.
• Lopez-Villegas, J.M.; Salas, A.; Vidal, N.; Sieiro, J., 3D-Printed Low-Pass Filter with Conical Inductors for Broadband RF Applications, 48th European Microwave Conference, 292-295, 2018.
• Salas-Barenys, A..; Vidal, N.; Sieiro, J.; Lopez-Villegas, J.M.; Medina-Rodríguez, B.; Ramos, F. M., Fabrication of Full-3D Printed Electronics RF Passive Components and Circuits, Conference on Ph. D. Research in Microelectronics and Electronics (PRIME), 265-268, 2018.
• Garcia-Miquel, A.; Medina-Rodríguez, B.; Vidal, N.; Ramos, F. M.; Roca, E.; Lopez-Villegas, J.M., Design and Characterization of a Miniaturized Implantable UHF RFID Tag Based on LTCC Technology, Antennas and Propagation (EUCAP), 1024-1026, 2017.
• Lopez-Villegas, J.M.; Vidal, N.; Sieiro, J.; Salas, A.; Medina, B.; Ramos, F.M., Electromagnetic characterization of 3D printed conical inductors for RF applications, IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2017.
• Ahyoune, S.; Sieiro, J.; Carrasco, T.; Vidal, N.; Lopez-Villegas, J.M.; Roca, E.; Fernandez, F.V., Extending the frequency range of quasi-static electromagnetic solvers, Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2017.
• Ahyoune, S.; Sieiro, J.; Vidal, N.; Lopez-Villegas, J.M.; Ramos, F., 1D/2D hybrid mesh PEEC solver for the analysis of multilayered planar circuits, IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwaves, and Terahertz Applications (NEMO), 49-51, 2017.
• Salas, A.; Vidal, N.; Sieiro, J.; Lopez-Villegas, J.M.; Medina, B.; Ramos, F.M., Full-3D Printed Electronics Process Using Stereolitography and Electroless Plating, Design of Circuits and Integrated Systems (DCIS), 2017.
• Ahyoune, S.; Sieiro, J.; Vidal, N.; Lopez-Villegas, J.M., Skin Effect Formula for Metal Strips in Laminated Substrates, Design of Circuits and Integrated Systems (DCIS), 2017.
• Garcia-Miquel, A.; Curto, S.; Vidal, N.; Lopez-Villegas, J.M.; Prakash, P., Compact Microwave Applicator for Thermal Therapy of Breast Cancer: Comparative Assessment of Arrays Operating at 434 and 915 MHz, European Conference on Antennas and Propagation (EUCAP), 2016.
• Vidal, N.; Garcia-Miquel, A.; Rios, A.; Lopez-Villegas, J.M.; Roca, E., Personal Exposure to Radiofrequency Electromagnetic Fields: University of Barcelona Study, European Conference on Antennas and Propagation (EUCAP), 2016.
• Curto, S.; Garcia-Miquel, A.; Vidal, N.; Lopez-Villegas, J.M.; Prakash, P. A phased antenna array for the treatment of cancer malignancies in the intact breast, Congress of Hyperthermic Oncology, 2016
• Ahyoune, S.; Lopez-Villegas, J.M; Sieiro, J.; Vidal, N.; Ramos, F.M., Effects of Shielding Structures on the Performance of Planar Inductors, Design of Circuits and Integrated Systems (DCIS), 2016.
• Lopez-Villegas, J.M.; Vidal, N.; del Alamo, J.A., Toroidal versus Spiral Inductors in Multilayered Tecnologies, IEEE Radio Frequency Integrated Circuits Symposium, 55-58, 2016.
• Medina-Rodriguez, B.; Ramos, F.M.; Lopez Villegas, J.M.; Vidal, N.; Sieiro, J.; Cirera, A., Customizable Printed Inductors on LTCC Substrates for RF Applications, Design of Circuits and Integrated Systems (DCIS), 2016.
• Garcia-Miquel, A.; Vidal, N.; Lopez-Villegas, J.M.; Sieiro, J.J.; Ramos, F.M., Miniaturization Effects on Implantable Antennas for Biomedical Applications, European Conference on Antennas and Propagation (EUCAP), 2015.
• Vidal, N.; Garcia-Miquel, A.; Lopez-Villegas, J.M.; Sieiro, J.J.; Ramos, F.M., Influence of Phantom Models on Implantable Antenna Performance for Biomedical Applications, European Conference on Antennas and Propagation (EUCAP), 2015.
• Ahyoune, S.; Sieiro, J.; Lopez-Villegas, J.M.; Vidal, N., Substrate Coupling Modeling in Integrated Circuits using Analytical Green’s Function, Design of Circuits and Integrated Systems (DCIS), 2014.
• Ahyoune, S.; Sieiro, J.; Lopez-Villegas, J.M.; Vidal, N.; Carrasco, T.; Ramos, F.; Fernández-Sanjuán, J.M., Scalable LTCC library for System-in-Package design, Design of Circuits and Integrated Systems (DCIS), 2013.
• Fernandez-Sanjuan, J.M.; Bonet, N.; Rodriguez, J.G.; Ramos, F.M.; Sieiro, J.J.; Lopez-Villegas, J.M.; Vidal, N.; Cirera, A., Ceramic capacitive pressure sensor based on LTCC technology, Conference on Electron Devices (CDE), 111-114, 2013.
• Vidal, N.; Lopez-Villegas, J.M.; Curto, S.; Colomer, J.; Ahyoune, S.; Garcia, A.; Sieiro, J.J.; Ramos, F.M., Design of an implantable broadband antenna for medical telemetry applications, European Conference on Antennas and Propagation (EUCAP), 1133-1136, 2013.
• N. Vidal; S. Curto; J.M. Lopez-Villegas; J. Sieiro; F.M. Ramos, Detuning effects on implantable antenna at various human positions, European Conference on Antennas and Propagation (EUCAP), 1231-1234, 2012.
• Lopez-Villegas, J.M.; Vidal, N.; Sieiro, J.; Macias-Montero, J.G.; Carrasco, T., Osorio, J.A., IQ signal Generation using 2nd harmonic injection locked oscillator, Microwave Symposium Digest (MTT), 2012.
• Vidal, N.; Lopez-Villegas, J.M.; Curto, S.; Sieiro, J.; Ramos, F.M., Design of a LTCC compact implantable broadband antenna for wireless biotelemetry, IEEE Antennas and Propagation Society International Symposium (APSURSI), 2012.
• Sieiro, J.; Lopez-Villegas, J.M.; Osorio, J.A.; Carrasco, T.; Vidal, M.N.; Ahyoune, S., Synthesis of compact planar inductors in LTCC technology, Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD),45-48, 2012.
• Sieiro, J.; Lopez-Villegas, J.M.; Vidal, M.N.; Osorio, J.A.; Carrasco, T.; Ahyoune, S., Ab initio adaptive meshing for planar passive component modeling, Microwave Conference (EuMC), 791-794, 2012.