Fast CAD and Optimization of Waveguide Components and Aperture Antennas by Hybrid MM/FE/MoM/FD Methods—State-of-the-Art and Recent Advances

Arndt, F.; Brandt, J.; Catina, V.; Ritter, J.; Rullhusen, I.; Dauelsberg, J.; Hilgefort, U.; Wessel, W.

doi:10.1109/tmtt.2003.820890

Cited by 94 publications

(52 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, these techniques require important CPU time and memory storage. To alleviate these weaknesses, several hybrid modal and space meshing methods have been proposed [5][6][7][8][9][10][11]. In [9][10][11], we presented hybrid FEM-MVM tools to the studying of complex discontinuities in unfilled and filled rectangular waveguides.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Complex Discontinuities in Circular Waveguides Using Hybrid Finite Element Method and Multimodal Variational Method

Yahia

Tao

Sakli³

2015

PIER Letters

View full text Add to dashboard Cite

Abstract-We propose a hybrid multimodal variational method (MVM) and finite element method (FEM) to the analysis of complex 2D discontinuities in circular waveguides. The finite element method characterizes waves in arbitrarily shaped discontinuities, and the total response of the circuit is obtained by applying the multimodal variational method. The proposed hybrid method is successfully applied to the full-wave analysis of discontinuities with great practical interest (i.e., circular, cross-shaped, offcentered, ridged, multi-aperture irises, etc.), thus improving CPU time and memory storage against several full-wave finite element method based computer aided design (CAD) tools (i.e., HFSS High Frequency Structural Simulator).

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Complex Discontinuities in Circular Waveguides Using Hybrid Finite Element Method and Multimodal Variational Method

Yahia

Tao

Sakli³

2015

PIER Letters

View full text Add to dashboard Cite

show abstract

“…The roots of the cross-product of Bessel functions and their derivatives represent the eigenvalue solutions of problems like the accurate simulation of the behavior of discontinuities involving coaxial geometries. This is a basic staple in modern computer-aided design (CAD) tools for designing waveguide networks [3]- [5]. The computation of the radiated field produced by an openended coaxial probe, a very useful tool in electromagnetic diagnosis, also needs the calculation of these roots [6]- [11].…”

Section: Introductionmentioning

confidence: 99%

Algorithm to Calculate a Large Number of Roots of the Cross-Product of Bessel Functions

Sorolla

Mosig

Mattes

2013

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Abstract-This paper describes an algorithm to calculate a large number of roots of the cross-product of Bessel functions and of their first derivatives. The algorithm initially finds the roots of the zeroth order using an auxiliary function that exhibits the same roots as the original cross-products but with better behavior for numerical root search with the Newton-Raphson algorithm. In order to find the roots for higher orders, the algorithm follows a pyramidal scheme using the interlacing property of the cross-product of Bessel functions. The algorithm shows globally convergent behavior for a large range of values of the argument and of the order of the Bessel functions. The roots can be computed to any precision, limited only by the computer implementation, and the convergence is attained in six iterations per root in average, showing a much better performance than previous works for the calculation of these roots.

show abstract

“…Nevertheless, these techniques require important CPU time and memory storage. To alleviate these drawbacks, several hybrid methods that combine modal and space meshing methods such like hybrid FEM-MM have been proposed for waveguide problems [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Complex Rectangular Filter Design Using Hybrid Finite Element Method and Modified Multimodal Variational Formulation

Yahia¹,

Tao²,

Sakli³

2013

PIER C

View full text Add to dashboard Cite

Abstract-We hybridize vector Finite Element Method (FEM) and a Modified Multimodal Variational Formulation (MMVF) to the accurate and fast design of complex isotropic rectangular filters. The MMVF is applied to the full-wave description in the rectangular waveguides while the FEM characterizes waves in the arbitrarily shaped discontinuities. The proposed hybrid method is applied to the full-wave analysis of circuits with great practical interest (i.e., cross-shaped iris and multimode filters), thus improving CPU time and memory storage against several full-wave FEM based Computer Aided Design (CAD) tools (i.e., HFSS High Frequency Structural Simulator). The performances of the proposed hybrid method are validated with experimental results and HFSS simulations.

show abstract

Fast CAD and Optimization of Waveguide Components and Aperture Antennas by Hybrid MM/FE/MoM/FD Methods—State-of-the-Art and Recent Advances

Cited by 94 publications

References 82 publications

Analysis of Complex Discontinuities in Circular Waveguides Using Hybrid Finite Element Method and Multimodal Variational Method

Analysis of Complex Discontinuities in Circular Waveguides Using Hybrid Finite Element Method and Multimodal Variational Method

Algorithm to Calculate a Large Number of Roots of the Cross-Product of Bessel Functions

Complex Rectangular Filter Design Using Hybrid Finite Element Method and Modified Multimodal Variational Formulation

Contact Info

Product

Resources

About