Simultaneous time and frequency domain solutions of EM problems using finite element and CFH techniques

Kolbehdari, M.A.; Srinivasan, M.; Nakhla, M.; Zhang, Qi‐Jun; Achar, R.

doi:10.1109/22.536600

Cited by 63 publications

(34 citation statements)

References 21 publications

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“…Numerical examples involving formulations for the case of homogeneous structures are presented in [15]. In this paper three numerical examples are given to demonstrate the applicability and the speed-up achieved in the case of inhomogeneous structures arising in electromagnetic problems.…”

Section: Computational Resultsmentioning

confidence: 99%

“…More recently, the complex frequency hopping method which has been used efficient in the simulation of large circuits including both lumped elements and transmission lines [12][13][14] was used in conjunction with the finite element modeling of electromagnetic problems [15,16]. This paper discusses the extension of a model reduction method [15,16] based on the tangential vector finite element and complex frequency hopping methods to compute the resonant frequencies of cavity resonators and the characteristic impedance of stripline shielded in a rectangular cavity.…”

Section: Introductionmentioning

confidence: 99%

“…This paper discusses the extension of a model reduction method [15,16] based on the tangential vector finite element and complex frequency hopping methods to compute the resonant frequencies of cavity resonators and the characteristic impedance of stripline shielded in a rectangular cavity.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Model-Reduction Method for Electromagnetic Problems

Kolbehdari¹

1998

PIER

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Section: Computational Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Model-Reduction Method for Electromagnetic Problems

Kolbehdari¹

1998

PIER

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“…In such cases, multiple expansion points are necessary. Here, a simple binary search algorithm, as described in [2], is employed to automatically choose the expansion points. In this paper, the first two expansion points are located closer to the region's endpoints.…”

Section: The Well-conditioned Asymptotic Waveform Evaluationmentioning

confidence: 99%

“…The asymptotic waveform evaluation (AWE) [1] has been proposed to efficiently solve this problem. AWE was originally developed in the circuit community, and then extended for electromagnetic analysis [2,3]. It is known that the conventional AWE has the problem of instability in the computation of the Pade approximation due to the ill-conditioned moment-matching process [4].…”

Section: Introductionmentioning

confidence: 99%

Rapid Solutions of Scattering From Microstrip Antennas Using Well-Conditioned Asymptotic Waveform Evaluation

Wan¹,

Chen²

2004

PIER

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Abstract-The well-conditioned asymptotic waveform evaluation (WCAWE) is applied to the MoM solution of scattering from microstrip antennas so that the reduced order model is obtained to efficiently evaluate the frequency response over a broadband in this paper. In the traditional asymptotic waveform evaluation (AWE) method, the ill conditioning usually leads to stagnation in the momentmatching process. The WCAWE eliminates this difficult. At the same time, to cover the entire bandwidth, a multipoint automatic WCAWE method is also proposed. Numerical examples are given to illustrate the accuracy and robustness of this method.

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An electrical circuit theoretical method for time- and frequency- domain solutions of the structural mechanics problems

Ekinci

Atalar

1999

Int. J. Numer. Meth. Engng.

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SUMMARYShrinking device dimensions in integrated circuit technology made integrated circuits with millions of components a reality. As a result of this advance, electrical circuit simulators that can handle very large number of components have emerged. These programs use new circuit simulation techniques and can ÿnd solutions accurately and quickly. In this paper, we apply these techniques to structural mechanics problems by adopting electrical circuit equivalents. We ÿrst apply ÿnite element formulation to the mechanical problem. The obtained sets of equations are treated as if they are sets of equations of an equivalent electrical circuit which consists of linear circuit elements such as capacitors, inductors and controlled sources. The equivalent circuit is obtained in the form of a circuit netlist and solved using a general purpose electrical circuit simulator. Several examples showing the advantages of the circuit simulation techniques are demonstrated. Asymptotic waveform evaluation technique which is widely used for simulation of large electrical circuits is also studied for the same examples and the speed-up advantage is shown.

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Simultaneous time and frequency domain solutions of EM problems using finite element and CFH techniques

Cited by 63 publications

References 21 publications

Model-Reduction Method for Electromagnetic Problems

Model-Reduction Method for Electromagnetic Problems

Rapid Solutions of Scattering From Microstrip Antennas Using Well-Conditioned Asymptotic Waveform Evaluation

An electrical circuit theoretical method for time- and frequency- domain solutions of the structural mechanics problems

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