Publisher DOI: 10.1109/JMMCT.2019.2931936
Title: Efficient Simulation of Substrate-Integrated Waveguide Antennas Using a Hybrid Boundary Element Method
Authors: Dahl, David 
Brüns, Heinz-Dietrich 
Wang, Lei 
Frick, Eduard 
Seifert, Christian  
Lindner, Marko  
Schuster, Christian 
Keywords: Boundary element methods; contour integral method (CIM); horn antennas; method of moments (MoM); substrate integrated waveguide (SIW); unit cell analysis
Issue Date: 2019
Source: IEEE Journal on Multiscale and Multiphysics Computational Techniques (4): 8781922 (2019)
Abstract (english): 
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.
ISSN: 2379-8793
Journal: IEEE journal on multiscale and multiphysics computational techniques 
Institute: Theoretische Elektrotechnik E-18 
Mathematik E-10 
Document Type: Article
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