An Efficient Technique to Assess the Convergence of the Multimode Equivalent Network for Waveguide Devices

Abstract

Numerical methods are widely used to analyze and design microwave components for communication applications. In the implementation of any numerical technique, however, there are always a set of parameters that must be properly adjusted in order to obtain, at the same time, computational efficiency and numerical accuracy of the results. In this context, therefore, we focus in this paper on the multimode equivalent network formulation for waveguide devices, and we propose a more intuitive and efficient strategy for choosing these parameters. Following our approach, setting only one global numerical variable is sufficient to adjust automatically the specific convergence parameters of each discontinuity to give a specific level of numerical accuracy of the results. As a consequence, the computational efficiency is significantly increased. In addition, the user experience is significantly improved since our approach eliminates all lengthy convergence tests previously needed to assure good numerical accuracy. In addition to theory, we discuss in this paper a number of numerical results that clearly demonstrate how the new strategy is very effective, thereby fully validating the theoretical formulation.

Investigación en técnicas numéricas basadas en ecuación integral para el análisis y diseño de dispositivos de microondas para comunicaciones espaciales

“…where h To continue, we now separate the modes which contribute to the storage of energy (localized modes) from the modes that contribute to the energy exchange between cascaded discontinuities (accessible modes) Gomez- Molina et al (2018b). This is done by splitting the infinite modal series into two terms, thus obtaining 2) n h (2) n (s) + 2) m (s), (4.6) where N (δ) is the number of accessible modes in each region.…”