Efficient simulation of substrate-integrated waveguide antennas using a hybrid boundary element method

David Dahl, Heinz-Dietrich Brüns, Lei Wang, Eduard Frick, Christian Seifert, Marko Lindner, Christian Schuster

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents a hybrid boundary element method for the efficient simulation of substrate-integrated waveguide (SIW) horn antennas. It is applicable with good accuracy to relatively thin structures with conventional circular ground vias. In the multiscale simulations, a 2-D contour integral method is used for the modeling of the fields inside the structure with numerous vias and a method of moments is used for the radiated fields outside. The contour integral method is extended in this paper by a new waveguide port of finite size based on the unit cell analysis of an SIW segment. Several SIW horn antennas are studied to validate the proposed method in terms of the input impedance, the field distribution on the aperture, and the radiation diagram. The proposed method shows good to reasonable accuracy and has a numerical efficiency which is about 2-3 orders higher than FEM-based full-wave simulations. It is therefore well suited for fast optimizations.
Original languageEnglish
Pages (from-to)180-189
Number of pages10
JournalIEEE Journal on Multiscale and Multiphysics Computational Techniques
Volume4
Early online date30 Jul 2019
DOIs
Publication statusPublished - 2019

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