scholarly journals Comparison of higher order fem and MOM/SIE approaches in analyses of closed- and open-region electromagnetic problems

2008 ◽  
Vol 21 (2) ◽  
pp. 209-220
Author(s):  
Milan Ilic ◽  
Andjelija Ilic ◽  
Branislav Notaros
Keyword(s):  
Method Of Moments ◽  
Three Dimensional ◽  
Higher Order ◽  
The Finite Element Method ◽  
Surface Integral ◽  
Electromagnetic Problems ◽  
Full Wave ◽  
Full Wave Analysis ◽  
Open Region ◽  
Higher Order Modeling

We investigate the efficiency of the two most popular frequency-domain approaches in computational electromagnetics (CEM); the finite element method (FEM) and the method of moments based on the surface integral equation (MoM/SIE), both in the context of the higher order modeling. We compare the performances of the two approaches in two simple three-dimensional (3-D) problems with similar meshes, chosen as benchmark examples. The chosen examples demonstrate full-wave analysis of a wave-guiding structure (a closed-region problem) and a scatterer in free space (an open-region problem). .

scholarly journals Simulation of Airborne Antenna Array Layout Problems Using Parallel Higher-Order MoM

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Zhongchao Lin ◽  
Yu Zhang ◽  
Shugang Jiang ◽  
Xunwang Zhao ◽  
Jingyan Mo
Keyword(s):  
Method Of Moments ◽  
Load Balance ◽  
Message Passing ◽  
Composite Structures ◽  
Message Passing Interface ◽  
Higher Order ◽  
Parallel Method ◽  
Electromagnetic Problems ◽  
Microstrip Patch ◽  
Higher Order Method

The parallel higher-order Method of Moments based on message passing interface (MPI) has been successfully used to analyze the changes in radiation patterns of a microstrip patch array antenna mounted on different positions of an airplane. The block-partitioned scheme for the large dense MoM matrix and a block-cyclic matrix distribution scheme are designed to achieve excellent load balance and high parallel efficiency. Numerical results demonstrate that the rigorous parallel Method of Moments can efficiently and accurately solve large complex electromagnetic problems with composite structures.

scholarly journals Method of Moments versus Advanced Transverse Wave Approach for EM Validation of Complex Microwave and RF Applications

2020 ◽  
Vol 20 (1) ◽  
pp. 31-38
Author(s):  
Mohamed Ayari ◽  
Yamen El Touati ◽  
Saleh Altowaijri
Keyword(s):  
Method Of Moments ◽  
Transverse Wave ◽  
Integrated Circuit ◽  
Integrated Circuit Design ◽  
Printed Antennas ◽  
Wave Approach ◽  
Full Wave ◽  
Microwave Engineering ◽  
Full Wave Analysis ◽  
Information And Communication

The art of benchmarking study has improved at an astonishing rate the scientific research in all areas but mainly in microwave engineering domain, and in particular, the field of microwave (MW) and radiofrequency (RF) integrated circuit design. Moreover, the fast simulation of complex MF/RF structures is considered a big challenge for the simulators, mainly in light of the continuous information and communication technology (ICT) development. In this context, the present paper sets out to present two important numerical electromagnetic (EM) methods, the method of moments (MOM) and our advanced transverse wave approach (A-TWA) for full-wave analysis of RF/MW structures. The computational complexity of these methods is evaluated. Two complex printed antennas working in the RF/MW range are selected and investigated. The EM problems that can be found in these circuits and that could not be solved analytically or by other numerical methods are discussed. The EM-validation of the studied structures using A-TWA and MOM is demonstrated and compared in the context of RF/MW applications. The obtained simulation results prove the efficiency and rapidity of our approach in comparison with the literature.

scholarly journals Finding exceptional points in realistic systems using full-wave simulations

2021 ◽  
Vol 2015 (1) ◽  
pp. 012033
Author(s):  
Alexey A Dmitriev ◽  
Mikhail V Rybin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
Dipole Model ◽  
The Finite Element Method ◽  
Exceptional Points ◽  
Full Wave ◽  
Element Method

Abstract Here, we present an approach to finding exceptional points using the finite-element method. Using this method, we demonstrated exceptional points in 2D dimers of infinite cylinders and infinite parallelepipeds. The results agree well with the analytical coupled-dipole model, however a deviation due to the contribution of higher multipoles, is present. Our approach can be applied to three-dimensional particles as well.

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