Conductor losses calculation in two-dimensional simulations of H-plane rectangular waveguides. Issue 8 (24th May 2019)

• Record Type: Journal Article
• Authors: Castorina, G.; Torrisi, G.; Sorbello, G.; Celona, L.; Mostacci, A.
• Is Part Of: Journal of electromagnetic waves and applications. Volume 33:Issue 8(2019)
• Page Start: 981
• Page End: 990
• Publication Date: 2019-05-24
• Subjects: H-plane waveguide -- numerical simulation -- power divider -- attenuation -- conductor losses -- conductivity -- waveguide components -- rectangular waveguides; Electromagnetic waves -- Periodicals; Electromagnetic devices -- Periodicals; 621.3
• DOI: 10.1080/09205071.2019.1583136
• Languages: English
• ISSNs: 0920-5071

Abstract

ABSTRACT: This paper presents a novel numerical approach to simulate H-plane rectangular-waveguide microwave circuits considering a reduced quasi-2D simulation domain with benefits for computational cost and time. With the aim to evaluate the attenuation of the full height 3D component, we propose a modified expression for the waveguide top/bottom wall conductivity. Numerical 2D simulations are validated against results from full wave 3-D commercial electromagnetic simulator. After a benchmark on a simple straight waveguide model, the method has been successfully applied to an asymmetric un-balanced power splitter, where an accurate power loss prediction is mandatory. Simulation time and memory consumption can be reduced by a factor ten and seven respectively, in comparison with complete 3D geometries. Finally, we show that, also for quasi-2D E-bend waveguide, a case where the translational H-plane symmetry is broken, the error on conductor losses computation is mitigated by our approach since the method remains still valid in a first approximation.