Articles techniques et présentations

Gallium nitride (GaN)-based power devices have emerged as leading contenders for high-frequency applications owing to their inherent robustness, high power density and superior electron mobility. [1] They are now essential components in radar systems, cellular base stations, and next ... En savoir plus

Abstract We present a chip-scale planar cavity platform based on an attached split-ring resonator (ASRR) integrated with yttrium iron garnet (YIG) structures to achieve strong magnon–photon coupling in a compact hybrid system. The ASRR geometry was numerically optimized by tuning inter ... En savoir plus

Industrial microwave heating simulations often require the representation of large cavities, multiple feeding ports, distributed food loads, and supporting structures. In the present work, a full-scale electromagnetic model was required because preliminary analyses showed that a reduced ... En savoir plus

Solid state defects are a promising candidate for many applications in quantum technologies [1-3], whereas their potential usage as qubits for quantum computing is most prominent. [3] Therefor, quantum state manipulation needs to be performed and necessitates resonant microwave ... En savoir plus

Microwave heating is widely used in thermal therapies, particularly microwave ablation (MWA), because it enables rapid and volumetric heating of biological tissue. However, elevated temperatures can induce water evaporation, thermal damage, and substantial tissue shrinkage, potentially ... En savoir plus

This project investigates the geometry optimisation of a dielectric resonator for a pentacene-doped p-terphenyl maser (microwave amplification by stimulated emission of radiation). Efficient operation of an organic crystal maser requires strong microwave magnetic field coupling between ... En savoir plus

Planar Gunn devices can generate microwave-to-terahertz oscillations through the transferred-electron effect or Gunn effect: above a threshold electric field, intervalley electron transfer produces negative differential mobility and negative differential resistance (NDR), supporting self ... En savoir plus

Creating polymers with tunable permittivitt and loss tangent simultaneously requires precise control of the conductive filler microstructure through process optimization. Carbon coated SiO2 (C@SiO2) nanoparticles in an epoxy matrix represent a suitable system for this challenge. ... En savoir plus