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In this work, a model order reduction technique for fast frequency sweep in microwave filters and diplexers via the Reduced Basis Method is detailed. The Finite Element Method is used to solve the time-harmonic Maxwell's equations in these resonant circuit problems. Taking into account the electromagnetic field varies smoothly as a function of the frequency parameter, a low dimension system parameter...
A circuit description of the electromagnetic behavior in microwave filters by means of the data provided by FEM analysis in the frequency band of interest is detailed. Loewner matrix approach is used to carry out a tangential interpolation of the simulation data, giving rise to a linear dynamical system description fitting the simulation results. The FEM solver is then used as a black box unlike other...
A data-driven model order reduction technique for fast frequency sweep in computationally intensive full-wave solution in large finite frequency selective surfaces is detailed. A hybrid Boundary Integral-Finite Element Domain Decomposition Method is addressed to accurately predict the electromagnetic behavior of these structures. A reduced-order model is built up by means of output data provided by...
In this work, the electromagnetic behaviour in microwave filters is described in terms of circuit theory. A transversal coupling matrix gathering all electromagnetic phenomena within a frequency band is found. As a result, further insight from the microwave point of view arises. A Finite Element Method approach is carried out for the microwave filter analysis and a reliable reduced-order model for...
In this work, a reduced-order model for geometry parameters and fast frequency sweep is proposed. The Finite Element Method is used to solve time-harmonic Maxwell's equations. Taking into account the electromagnetic field does not arbitrarily vary as a function of frequency and geometry parameters, a low dimension system manifold is identified. Thus, the original Finite Element problem can be approximated...
In this work, a reduced-order model for fast frequency sweep in large finite antenna arrays is proposed. A Domain Decomposition Method approach is carried out in the antenna array analysis. The ingredients of this methodology are: 1) the use of field solutions at given frequencies as basis functions to reduce the original system, 2) adaptively choosing the field solution frequency samples and 3) evaluation...
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