Performance-Enhanced Complex Envelope ADI-PML for Bandpass EM Simulation

Wu, Peiyu; Xie, Yongjun; Jiang, Haolin; Niu, Liqiang

doi:10.1109/lmwc.2020.3007454

Cited by 11 publications

(5 citation statements)

References 11 publications

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“…To demonstrate the theoretical efficiency, numbers of tridiagonal matrices and arithmetic operations are employed. In addition, to compare our proposed algorithm with different PML algorithms, CE‐ADI‐HPML proposed in reference 16 , CE‐CNAFS‐HPML proposed in reference 17, HIE‐PML proposed in reference 9, HIE‐CPML proposed in reference 10 and FDTD‐PML proposed in reference 15 are utilized. The proposed scheme is denoted as CE‐LHIE‐HPML, as shown in Table 1.…”

Section: Theoretical Formulationmentioning

confidence: 99%

Bandpass leapfrog hybrid implicit–explicit procedure with promoted absorption for obtaining fine geometry in a single direction

Xie

Jiang

et al. 2022

Int J RF Mic Comp-Aid Eng

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For an accurate and efficient calculation of fine geometry along a single direction in open regions, a bandpass one‐step hybrid implicit–explicit (HIE) procedure with promoted absorption is implemented in this study. More precisely, the proposed scheme is modified by integrating complex envelope (CE) method, higher order concept, perfectly matched layer (PML) formulation, and one‐step leapfrog HIE procedure. Furthermore, by introducing property variables, efficiency can be improved significantly. In addition, the proposed scheme not only overcomes the Courant–Friedrich–Levy stability condition but also solves the efficiency decrement problem of implicit algorithms. The effectiveness of the proposed algorithm is validated and demonstrated both numerically and experimentally. According to the results, we can conclude that the proposed scheme is advantageous in terms of enhanced accuracy, promoted absorption, improved efficiency for fine geometry along a single direction in bandpass open region problems.

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Section: Theoretical Formulationmentioning

confidence: 99%

Bandpass leapfrog hybrid implicit–explicit procedure with promoted absorption for obtaining fine geometry in a single direction

Xie

Jiang

et al. 2022

Int J RF Mic Comp-Aid Eng

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“…The four auxiliary variables higher or-der PML scheme is introduced to improve the efficiency and absorption. The higher order PML schemes are mainly based on the CFS-PML formulation [37][38][39][40]. The CFS-PML formulation is a media dependent formulation whose complexity increases with the existence of multi-media.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Scattering Characteristics Based on Crank-Nicolson Direct-Splitting Algorithm for Remote Sensing Problems

Gao,

Jiang,

Fan

et al. 2024

IEEE Open J. Antennas Propag.

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In remote sensing problems, broadband scattering investigation becomes increasingly important than ever before. The scattering characteristic changes significantly with the variation of range. Thus, the conventional evaluation method becomes invalid in many situations. Meanwhile, an efficient method for the simulation of electromagnetic wave propagation in electrically large remote sensing problem is also an urgently demanding. In order to alleviate such problems, an alternative Crank-Nicolson Direct-Splitting algorithm is proposed in open regions. To infinite extension of the computational domain, convolutional perfectly match layer with higher order formulation is proposed not only to further enhance the absorption at low-frequency band but also to decrease the reflections during the entire time domain simulation. Efficient method is proposed for scattering characteristics evaluation which ranges from near-field to far-field. Radar remote sensing Problems including ground penetrating radar and early warning radar are introduced to demonstrate the effectiveness of the algorithm. Through the results, it can be concluded that the proposed algorithm shows considerable performance in the simulation of remote sensing problems.

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“…It has been testified that the unsplit-field scheme shows its advantages in simplifying the implementation at corners and edges, absorbing low-frequency evanescent waves and reducing late-time reflections. To our knowledge, the bandpass form for the BOR-FDTD algorithm has not been investigated [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Bandpass Unconditionally Stable Ce-Bor-PML Scheme With CNDG Algorithm for Rotational Symmetric Simulation

Wu¹,

Liu²,

Dong³

et al. 2021

PIER M

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Unconditionally stable approximate Crank-Nicolson (CN) perfectly matched layer (PML) implementation is proposed to treat open region problems for a bandpass rotational symmetric structure. To be more specific, this implementation is based upon the CN Douglas-Gunn (DG) procedure and the complex envelope (CE) method in body of revolution (BOR) finite-difference time-domain (FDTD) lattice. The proposed scheme inherits the advantages of the CNDG procedure, CE method, and BOR-FDTD algorithm which can improve the efficiency, enhance the absorption, and maintain the calculation accuracy. The effectiveness which includes accuracy, efficiency, occupied resources, and absorption is illustrated through a numerical example. The numerical results reveal that the proposed scheme provides considerable accuracy, creditable absorption, and outstanding efficiency. Meanwhile, it can also verify that the proposed scheme is stable without the limitation of Courant-Friedrich-Levy (CFL) condition.

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Performance-Enhanced Complex Envelope ADI-PML for Bandpass EM Simulation

Cited by 11 publications

References 11 publications

Bandpass leapfrog hybrid implicit–explicit procedure with promoted absorption for obtaining fine geometry in a single direction

Bandpass leapfrog hybrid implicit–explicit procedure with promoted absorption for obtaining fine geometry in a single direction

Analysis of Scattering Characteristics Based on Crank-Nicolson Direct-Splitting Algorithm for Remote Sensing Problems

Bandpass Unconditionally Stable Ce-Bor-PML Scheme With CNDG Algorithm for Rotational Symmetric Simulation

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