Publications
Peer-reviewed work from research at the Universidad de Granada and UC San Diego. Topics span evolutionary antenna optimization and GPU-accelerated micromagnetic simulation.
Exploration of Multi-Objective Particle Swarm Optimization on the Design of UWB Antennas
J. Espigares Martin · M. Fernández Pantoja · A. Rubio Bretones · S. González García · C.M.D.J. van Coevorden · R. Gómez Martín
3rd European Conference on Antennas and Propagation (EuCAP), Berlin, Germany — pp. 561–565
Abstract
Ultra-wideband (UWB) antennas must operate across an exceptionally wide frequency range while remaining compact and conforming to strict spectral regulations — including a mandatory notch to avoid interference with existing 5 GHz Wi-Fi systems.
This paper applies Multi-Objective Particle Swarm Optimization (MOPSO) to automate the antenna geometry design process, coupled to a full-wave FDTD electromagnetic simulator, simultaneously balancing broadband impedance matching, band-notch depth in the 5–6 GHz range, and radiation performance.
Conducted at the Departamento de Electromagnetismo y Materiá de la Condensada, Universidad de Granada, under Spanish Ministry of Science research grant (TEC2007-66698-C04-02/TCM).
Effect of Thermal Fluctuations on the Performance of Particulate Media
J. E. Martin · M. V. Lubarda · V. Lomakin · P.-O. Jubert
IEEE Transactions on Magnetics, Vol. 49, pp. 3137–3140
Abstract
High-density magnetic recording depends on microscopic magnetic particles that must reliably hold their written state at and above room temperature. Thermal energy introduces random perturbations that can broaden written transitions, widen the switching field distribution, and degrade SNR.
This paper uses GPU-accelerated micromagnetic simulations to quantify how thermal fluctuations affect the write performance of barium ferrite (BaFe) particulate recording media across a temperature range up to 400 K, providing design guidelines for thermally resilient media.
Conducted in collaboration with Prof. Vitaly Lomakin’s Computational Magnetics group at UC San Diego and IBM Research.