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Vladimir Okhmatovski - One of the best experts on this subject based on the ideXlab platform.
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Overview of Surface-Volume-Surface Electric Field Integral Equation Formulations for 3-D Composite Metal-DiElectric Objects
2020 14th European Conference on Antennas and Propagation (EuCAP), 2020Co-Authors: Reza Gholami, Shucheng Zheng, Vladimir OkhmatovskiAbstract:The Surface-Volume-Surface Electric Field Integral Equation (SVS-EFIE) has been recently generalized to solution of general scattering and radiation problems for 3D composite objects. These objects can be formed by multiple piece-wise homogeneous diElectric regions which do or do not share common boundaries. Generalization to the composite objects formed by metal and piece-wise homogeneous diElectric regions which share common boundaries has also been demonstrated. Since the SVS-EFIE formulation utilizes only the Electric Field dyadic Green’ s functions, it can be extended to the case of composite objects situated in non-magnetic planar multilayered media by casting its operators into the mixed-potential form using classical Michalski-Zheng’ s approach. Examples of the above SVS-EFIE formulations are summarized in the paper.
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Delta-Gap Source Excitation Model in Surface-Volume-Surface Electric Field Integral Equation for 3-D Interconnect Characterization
2019 IEEE 28th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), 2019Co-Authors: Ammar Aljamal, Reza Gholami, Shucheng Zheng, Vladimir OkhmatovskiAbstract:A delta-gap source model is proposed for Surface-Volume-Surface Electric Field Integral Equation (SVS-EFIE) which is a new class of single source integral equation (SSIE). The proposed excitation model enables the use of SVS-EFIE for full-wave analysis of interconnects which accurately accounts for the loss in the conductors and allows for rigorous handling of the substrate multilayered medium. The delta-gap source model of SVS-EFIE is derived based on the conventional model that was formulated for the classic Surface Electric Field Integral Equation (EFIE). The computation of the network parameters, however, requires computation of the Electric Fields at the ports volumetric cross-sections. The SVS-EFIE and the proposed source model are discretized using Method of Moments (MoM). Preliminary numerical results are provided for current distribution and the input impedance calculations of a dipole antenna. The input impedance of the dipole antenna computed using proposed excitation model is shown to agree well with that computed using classical Surface EFIE provided the latter uses appropriate Surface impedance model to account for the conductor loss.
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Surface-Volume-Surface Electric Field Integral Equation for Solution of Scattering Problems on 3-D DiElectric Objects in Multilayered Media
IEEE Transactions on Microwave Theory and Techniques, 2018Co-Authors: Shucheng Zheng, Reza Gholami, Vladimir OkhmatovskiAbstract:Generalization of the Surface-volume-Surface Electric Field integral equation (SVS-EFIE) for the solution of electromagnetic scattering problems on 3-D diElectric objects embedded in multilayered media is proposed. While having only a single unknown Surface current density on the boundary of the scatterer, the SVS-EFIE also features only Electric Field dyadic Green’s functions in its integral operators. This property in conjunction with Michalski–Zheng’s formulation of the multilayered media Electric Field Green’s function allows for the formulation of SVS-EFIE in the mixed potential form for the solution of the scattering problems in layered media. In the proposed method of moments (MoM) discretization scheme, the gradient and divergence operators associated with the Electric Field Green’s function are shifted to the basis and test functions of the discretized integral operators. As a result, the proposed formulation features no derivatives acting on the components of the layered media dyadic Green’s function, hence, substantially alleviating the numerical evaluation of the pertinent Sommerfeld integrals. The proposed MoM formulation scalarizes reaction integrals containing the multilayered media dyadic Green’s function through the use shape function-based definition of the basis and test functions. The resultant MoM integrals feature no singularities stronger than $1/R$ . The validation of the proposed SVS-EFIE formulation and its MoM discretization is performed through a comparison of the computed Fields against the Fields produced using commercial electromagnetic analysis software.
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Surface volume Surface Electric Field integral equation for magneto quasi static analysis of complex 3 d interconnects
IEEE Transactions on Microwave Theory and Techniques, 2014Co-Authors: Anton Menshov, Vladimir OkhmatovskiAbstract:A novel single-source Surface-volume-Surface integral equation is proposed for accurate broadband resistance and inductance extraction in 3-D interconnects. The new equation originates in the volume integral equation (VIE) traditionally used for magneto-quasi-static modeling of current flow in 3-D wires. The latter is reduced to a Surface integral equation by representing the Electric Field inside each conductor segment as a superposition of cylindrical waves emanating from the conductor's boundary. As no approximation is utilized and all underlying boundary conditions and pertinent equations are satisfied in the reduction, the new integral equation is rigorously equivalent to the solution of the traditional volume Electric Field integral equation. The rigorous nature of the proposed single-source Surface integral equation is corroborated numerically. In this paper, a detailed description of the method of moments discretization for the proposed Surface integral equation is also presented. Numerical solution of the proposed Surface integral equation for a 12-conductor bond-wire package is used to demonstrate the accuracy of the method and its computational benefits compared to the traditional solution based on the VIE.
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Method of moment solution of Surface-Volume-Surface Electric Field Integral Equation for two-dimensional transmission lines of complex cross-sections
2012 IEEE 16th Workshop on Signal and Power Integrity (SPI), 2012Co-Authors: Anton Menshov, Vladimir OkhmatovskiAbstract:The novel Surface-Volume-Surface Electric Field Integral Equation (SVS-EFIE) has been recently proposed for accurate extraction of per-unit-length (p.u.1.) inductance and resistance (RL) matrices in multi-conductor transmission lines (MTL). The SVS-EFIE yields the same accuracy of RL extraction as the traditional volumetric EFIE (V-EFIE) solution while introducing the unknown currents on the conductor Surface instead of its volume. This work presents detailed discussion of Method of Moments (MoM) discretization of the SVS-EFIE and resultant matrices. The example of a coaxial transmission line is utilized in derivations to demonstrate method's applicability to MTL's with multi-connected cross-sections.
Anton Menshov - One of the best experts on this subject based on the ideXlab platform.
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Surface volume Surface Electric Field integral equation for magneto quasi static analysis of complex 3 d interconnects
IEEE Transactions on Microwave Theory and Techniques, 2014Co-Authors: Anton Menshov, Vladimir OkhmatovskiAbstract:A novel single-source Surface-volume-Surface integral equation is proposed for accurate broadband resistance and inductance extraction in 3-D interconnects. The new equation originates in the volume integral equation (VIE) traditionally used for magneto-quasi-static modeling of current flow in 3-D wires. The latter is reduced to a Surface integral equation by representing the Electric Field inside each conductor segment as a superposition of cylindrical waves emanating from the conductor's boundary. As no approximation is utilized and all underlying boundary conditions and pertinent equations are satisfied in the reduction, the new integral equation is rigorously equivalent to the solution of the traditional volume Electric Field integral equation. The rigorous nature of the proposed single-source Surface integral equation is corroborated numerically. In this paper, a detailed description of the method of moments discretization for the proposed Surface integral equation is also presented. Numerical solution of the proposed Surface integral equation for a 12-conductor bond-wire package is used to demonstrate the accuracy of the method and its computational benefits compared to the traditional solution based on the VIE.
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Method of moment solution of Surface-Volume-Surface Electric Field Integral Equation for two-dimensional transmission lines of complex cross-sections
2012 IEEE 16th Workshop on Signal and Power Integrity (SPI), 2012Co-Authors: Anton Menshov, Vladimir OkhmatovskiAbstract:The novel Surface-Volume-Surface Electric Field Integral Equation (SVS-EFIE) has been recently proposed for accurate extraction of per-unit-length (p.u.1.) inductance and resistance (RL) matrices in multi-conductor transmission lines (MTL). The SVS-EFIE yields the same accuracy of RL extraction as the traditional volumetric EFIE (V-EFIE) solution while introducing the unknown currents on the conductor Surface instead of its volume. This work presents detailed discussion of Method of Moments (MoM) discretization of the SVS-EFIE and resultant matrices. The example of a coaxial transmission line is utilized in derivations to demonstrate method's applicability to MTL's with multi-connected cross-sections.
Robert Fedosejevs - One of the best experts on this subject based on the ideXlab platform.
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Terahertz radiation and second-harmonic generation from InAs: Bulk versus Surface Electric-Field-induced contributions
Physical Review B, 2005Co-Authors: Matthew Reid, Igor V. Cravetchi, Robert FedosejevsAbstract:Polarized second-harmonic generation and terahertz radiation in reflection from (100), (110), and (111) faces of $n$-type InAs crystals are investigated as a function of the sample azimuthal orientation under excitation from femtosecond Ti:sapphire laser pulses. The expressions describing the second-order response (optical second-harmonic generation and optical rectification) in reflection from zinc-blende crystals, such as InAs, are calculated taking into account the bulk Electric-dipole contribution and the first-order Surface Electric-Field-induced contribution. It is shown that the two contributions can be separated based on rotation symmetry considerations. Moreover, a direct comparison of the second-harmonic generation and terahertz radiation emission indicates that the observed dominant Surface Electric-Field-induced optical rectification component may be attributed to the large free-carrier contribution to the third-order susceptibility in InAs.
Zong Wei - One of the best experts on this subject based on the ideXlab platform.
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A More Accurate Calculation Method of Surface Electric Field Intensity of Bundled Conductors
Power system technology, 2006Co-Authors: Zong WeiAbstract:As for the design of UHV transmission lines, the calculation of Surface Electric Field intensity of bundled conductors is one of the main problems. Based on charge simulation method a more accurate calculation method of Surface Field intensity of bundled conductors is proposed, in which the position of simulation charges is adaptively determined and the formulae to calculate maximal Field intensity of each phase are deduced, so the maximal Field intensity on the Surface of arbitrary conductor and that at any spatial point around the conductor can be directly calculated. Less number of simulation charges are used in the proposed method and the calculation is simple. The results of case study show that the proposed method is accurate.
Shucheng Zheng - One of the best experts on this subject based on the ideXlab platform.
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Overview of Surface-Volume-Surface Electric Field Integral Equation Formulations for 3-D Composite Metal-DiElectric Objects
2020 14th European Conference on Antennas and Propagation (EuCAP), 2020Co-Authors: Reza Gholami, Shucheng Zheng, Vladimir OkhmatovskiAbstract:The Surface-Volume-Surface Electric Field Integral Equation (SVS-EFIE) has been recently generalized to solution of general scattering and radiation problems for 3D composite objects. These objects can be formed by multiple piece-wise homogeneous diElectric regions which do or do not share common boundaries. Generalization to the composite objects formed by metal and piece-wise homogeneous diElectric regions which share common boundaries has also been demonstrated. Since the SVS-EFIE formulation utilizes only the Electric Field dyadic Green’ s functions, it can be extended to the case of composite objects situated in non-magnetic planar multilayered media by casting its operators into the mixed-potential form using classical Michalski-Zheng’ s approach. Examples of the above SVS-EFIE formulations are summarized in the paper.
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Delta-Gap Source Excitation Model in Surface-Volume-Surface Electric Field Integral Equation for 3-D Interconnect Characterization
2019 IEEE 28th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), 2019Co-Authors: Ammar Aljamal, Reza Gholami, Shucheng Zheng, Vladimir OkhmatovskiAbstract:A delta-gap source model is proposed for Surface-Volume-Surface Electric Field Integral Equation (SVS-EFIE) which is a new class of single source integral equation (SSIE). The proposed excitation model enables the use of SVS-EFIE for full-wave analysis of interconnects which accurately accounts for the loss in the conductors and allows for rigorous handling of the substrate multilayered medium. The delta-gap source model of SVS-EFIE is derived based on the conventional model that was formulated for the classic Surface Electric Field Integral Equation (EFIE). The computation of the network parameters, however, requires computation of the Electric Fields at the ports volumetric cross-sections. The SVS-EFIE and the proposed source model are discretized using Method of Moments (MoM). Preliminary numerical results are provided for current distribution and the input impedance calculations of a dipole antenna. The input impedance of the dipole antenna computed using proposed excitation model is shown to agree well with that computed using classical Surface EFIE provided the latter uses appropriate Surface impedance model to account for the conductor loss.
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Surface-Volume-Surface Electric Field Integral Equation for Solution of Scattering Problems on 3-D DiElectric Objects in Multilayered Media
IEEE Transactions on Microwave Theory and Techniques, 2018Co-Authors: Shucheng Zheng, Reza Gholami, Vladimir OkhmatovskiAbstract:Generalization of the Surface-volume-Surface Electric Field integral equation (SVS-EFIE) for the solution of electromagnetic scattering problems on 3-D diElectric objects embedded in multilayered media is proposed. While having only a single unknown Surface current density on the boundary of the scatterer, the SVS-EFIE also features only Electric Field dyadic Green’s functions in its integral operators. This property in conjunction with Michalski–Zheng’s formulation of the multilayered media Electric Field Green’s function allows for the formulation of SVS-EFIE in the mixed potential form for the solution of the scattering problems in layered media. In the proposed method of moments (MoM) discretization scheme, the gradient and divergence operators associated with the Electric Field Green’s function are shifted to the basis and test functions of the discretized integral operators. As a result, the proposed formulation features no derivatives acting on the components of the layered media dyadic Green’s function, hence, substantially alleviating the numerical evaluation of the pertinent Sommerfeld integrals. The proposed MoM formulation scalarizes reaction integrals containing the multilayered media dyadic Green’s function through the use shape function-based definition of the basis and test functions. The resultant MoM integrals feature no singularities stronger than $1/R$ . The validation of the proposed SVS-EFIE formulation and its MoM discretization is performed through a comparison of the computed Fields against the Fields produced using commercial electromagnetic analysis software.
