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Comparison of CBFM-...
Comparison of CBFM-Enhanced Iterative Methods for MoM-Based Finite Antenna Array Analysis
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- Marinovic, Tomislav (author)
- Katholieke Universiteit Leuven
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- Maaskant, Rob, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mittra, R. (author)
- University of Central Florida (UCF)
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- Vandenbosch, Guy A.E. (author)
- Katholieke Universiteit Leuven
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(creator_code:org_t)
- 2022
- 2022
- English.
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In: IEEE Transactions on Antennas and Propagation. - 0018-926X .- 1558-2221. ; 70:5, s. 3538-3548
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Abstract
Subject headings
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- In this paper we compare different iterative techniques enhanced by the CBFM, that are used to analyze finite arrays of disjoint antenna elements. These are based on the stationary-type methods (Jacobi, Gauss-Seidel, macro-block Jacobi), the nonstationary GMRES and the hybrid alternating GMRES-Jacobi (AGJ) method which combines these two types. In each iteration, the reduced CBFM system is constructed based on the previous iterates, the solution of which is used to update the solution vector in the next iteration with improved accuracy. In this way, the convergence of the classical iterative techniques can be greatly improved. The convergence rates and computational costs of the CBFM-enhanced iterative methods are analyzed by considering several MoM-based problems. The GMRES-based method, which employs the block-Jacobi preconditioner, outperforms the other methods when the MoM matrix is ill-conditioned. For well-conditioned MoM matrices with reduced diagonal dominance due to increased presence of the inter-element coupling effects, the AGJ method or the methods based on the stationary-type iterations may require smaller computational effort to converge to the desired solution accuracy in comparison to the GMRES-based approach.
Subject headings
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
- NATURVETENSKAP -- Matematik -- Matematisk analys (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Mathematical Analysis (hsv//eng)
Keyword
- Antenna arrays
- Jacobian matrices
- Convergence
- Computational efficiency
- Antenna arrays
- Iterative methods
- method of moments (MoM)
- Finite element analysis
- iterative methods
- mutual coupling
- Method of moments
- characteristic basis function method (CBFM)
- macrobasis functions
Publication and Content Type
- art (subject category)
- ref (subject category)
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