MLFMM-Accelerated Integral-Equation Modeling of Reverberation Chambers [Open Problems in CEM]

Zhao, Huapeng

doi:10.1109/map.2013.6735541

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…Most of the effort in the analysis and design of reverberation chambers is directed toward the solution of the deterministic electromagnetic problem (in the presence of specific sources). Method of Moments (MoM) is one of the most frequently used techniques for this type of problem in its simple form or extended by other techniques in a hybrid scheme [6][7][8][9][10][11][12][13][14][15][16]. Maybe the most complete work in this area is that of Bruns' [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the analysis of the stirrers in these works is simplified and is far from a realistic model, with the exception of [11]. Zhao introduces an integral equation accelerated by the Multi-Level Fast Multipole Method (MLFMM) in [14], but it is proved to be inappropriate for cavities since the specific technique is appropriate for far field, while the reverberation chamber requires near field. Two interesting works elaborate on the stirrer modeling [15,16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Finite Element Based Eigenanalysis for the Study of Electrically Large Lossy Cavities and Reverberation Chambers

Zekios¹,

Allilomes²,

Chryssomallis³

et al. 2014

PIER B

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An eigenanalysis-based technique is presented for the study and design of large complicated closed cavities and particularly Reverberation Chambers, including conductor and dielectric material losses. Two different numerical approaches are exploited. First, a straightforward approach is adopted where the finite walls conductivity is incorporated into the Finite Element Method (FEM) formulation through the Leontovich Impedance boundary conditions. The resulting eigenproblem is linearized through an eigenvalue transformation and solved using the Arnoldi algorithm. To address the excessive computational requirements of this approach and to achieve a fine mesh ensuring convergence, a novel approach is adopted. Within this, a linear eigenvalue problem is formulated and solved assuming all metallic structures as perfect electric conductors (PEC). In turn, the resulting eigenfunctions are postprocessed within the Leontovich boundary condition for the calculation of the metals finite conductivity losses. Mode stirrer design guidelines are setup based on the eigenfunction characteristics. Both numerical eigenanalysis techniques are validated against an analytical solution for the empty cavity and a reverberation chamber simulated by a commercial FEM simulator. A series of classical mode stirrers are studied to verify the design guidelines, and an improved mode stirrer is developed.

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