Improved Multilayer Thin Dielectric Sheet Approximation for Scattering from Electrically Large Dielectric Sheets

Niu, Xue; Nie, Zaiping; He, Shiquan; Que, Xiaofeng

doi:10.1109/lawp.2014.2380852

Cited by 14 publications

(4 citation statements)

References 7 publications

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“…[24], in which the contributions from both the tangential and normal fields are included. In addition to the thin dielectric bodies, the TDS approximation method has also been expanded for multilayer thin dielectric sheets [ 25, 26 ] and thin dielectric coated conducting bodies [ 27–29 ] .…”

Section: Introductionmentioning

confidence: 99%

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Characteristic Mode Analysis for Thin Dielectric Sheets with Alternative Surface Integral Equation

Jia

Ding

et al. 2022

Chinese J of Electronics

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When the dielectric sheet is electrically thin in the normal direction, the conventional volume integral equation (VIE) can be approximately simplified to the surface one. On this basis, a novel surface integral equation-based formulation is presented for analyzing characteristic mode (CM) of thin dielectric sheets. The resultant CMs are expressed with tangential and normal components of electric volume currents, which are more intuitive than the conventional VIE-based one. Due to the application of volume equivalence principle, the proposed formulation is immune to non-physical modes. The CMs of typical thin dielectric bodies, including the dielectric substrate and radome, are analyzed to show that the proposed formulation is computationally efficient with encouraging accuracy.

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Section: Introductionmentioning

confidence: 99%

“…( 7) and ( 8) into Eq. ( 6) and simplifying the volume integrals into surface integrals, TDS SIE can be obtained as [24,25] :…”

mentioning

confidence: 99%

Characteristic Mode Analysis for Thin Dielectric Sheets with Alternative Surface Integral Equation

Jia

Ding

et al. 2022

Chinese J of Electronics

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“…Instead of the VIE, an old study given in [10] is improved by the proper numerical modelling of the field components varying along the normal direction of the TDS [4]. Recently, this study is generalised to solve multilayer TDS surfaces [11]. In [12], the wideband frequency domain solution of the TDS surface modelling is done with the combination of another method.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a thin, penetrable, and non‐uniformly loaded cylindrical reflector illuminated by a complex line source

Oğuzer

Kuyucuoğlu

Avgin

et al. 2017

IET Microwaves, Antennas & Propagation

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A thin, penetrable, and cylindrical reflector is illuminated by the incident field of a complex source point. The scattered field inside the reflector is not considered and its effect is modelled through a thin layer generalised boundary condition (GBC). The authors formulate the structure as an electromagnetic boundary value problem and two resultant coupled singular integral equation system of equations are solved by using regularisation techniques. The GBC provides us to simulate the thin layer better than the resistive model which is applicable only for very thin sheets. Hence, the more reliable data can be obtained for high-contrast and low-loss dielectric material. The scattering and absorption characteristics of the front-fed and offset reflectors are obtained depending on system parameters. Also, the effects of the edge loading are examined for both E-and Hpolarisations. The convergence and the accuracy of the formulation are verified in reasonable computational running time.

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“…Even if the number of unknowns increases from 1.5N to 2.5N , the number is still fewer than the VIE or SIE, such as the Poggio-MillerChan-Harrington-Wu-Tsai (PMCHWT) integral equation. This method has been applied to various structures, such as the dielectric multi-layer structure, the composite perfect electric conductor (PEC) and thin dielectric structure, as well as the dielectric coated PEC structure [8]- [10]. Nevertheless, a wide frequency band analysis using the TDS is still time-consuming because the matrix equation obtained from the TDS must be solved repeatedly at each frequency point.…”

Section: Introductionmentioning

confidence: 99%

Fast Frequency Sweep Using Asymptotic Waveform Evaluation Technique and Thin Dielectric Sheet Approximation

Jeong

Hong

Lee

et al. 2016

IEEE Trans. Antennas Propagat.

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The thin dielectric sheet (TDS) surface integral equation combined with the asymptotic waveform evaluation (AWE) technique is proposed to efficiently analyze wide-band properties of thin dielectric layers such as radome and composite materials. The TDS surface integral equation is an efficient method for analyzing the thin dielectric layer because the number of unknowns of the TDS surface integral equation is fewer than that of the volume integral equation and the condition number of the TDS impedance matrix is small. In addition, the AWE technique based on a Taylor series and the Pade approximation is a well-known method for fast frequency sweep. Therefore, the combination of these two methods makes analysis of the thin dielectric layer efficient in the wide frequency region because the advantages of each method are shown at the same time. In order to determine the valid bandwidth of the approximated results for arbitrary problems using the TDS combined with the AWE, the bandwidth estimation approach for the AWE is applied. The results of the proposed method for closed and open structures agree very well with the exact solutions and reveal the capability for fast frequency sweep.

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Improved Multilayer Thin Dielectric Sheet Approximation for Scattering from Electrically Large Dielectric Sheets

Cited by 14 publications

References 7 publications

Characteristic Mode Analysis for Thin Dielectric Sheets with Alternative Surface Integral Equation

Characteristic Mode Analysis for Thin Dielectric Sheets with Alternative Surface Integral Equation

Analysis of a thin, penetrable, and non‐uniformly loaded cylindrical reflector illuminated by a complex line source

Fast Frequency Sweep Using Asymptotic Waveform Evaluation Technique and Thin Dielectric Sheet Approximation

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