The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Electromagnetic problems with both conducting and dielectric media are formulated through volume-surface integral equations (VSIEs) in integral equation approach. The conducting part is described by surface integral equation while the dielectric part is governed by volume integral equations (VIEs) and they are coupled together by produced fields. The VSIEs are usually solved by the method of moments...
Electromagnetic modeling and simulation is performed for a miniaturized patch antenna which includes a lossy dielectric substrate and layered thin-ferrite-film superstrate above microstrip. The structure is of multiscale and multimaterial feature and the system matrix may not be well-conditioned if surface integral equations (SIEs) are used to describe the problem. This work formulates the problem...
Accurate electromagnetic (EM) analysis is performed for transmission line structures with finite-thickness conductors. Traditionally, the analysis ignores the thickness of conductors to simplify the model but such an ignorance may not be allowed in many applications. In this paper, a rigorous three-dimensional (3D) model without any geometric approximation is established and the method of moment (MoM)...
Accurate solution of electromagnetic (EM) problems with complex materials requires the formulation of volume integral equations (VIEs) in the integral equation approach. The VIEs are traditionally solved by the method of moments (MoM) with the Schaubert-Wilton-Glisson (SWG) basis function, but we propose a point-matching scheme which does not relies on any basis and testing functions and allows the...
The interaction of transient electromagnetic (EM) wave with objects can be formulated by the integral equation approach in time domain. For conducting objects or homogeneous penetrable objects, the time-domain surface integral equations (TDSIEs) can be applied. Traditionally, the TDSIEs are solved by the method of moments (MoM) in spatial domain and a march-on in time (MOT) scheme in temporal domain...
Tunability analysis based on electromagnetic modeling and simulation is performed for a miniaturized patch antenna loaded with self-biased magnetic films. The antenna includes a lossy dielectric substrate and layered thin-ferrite-film superstrate above microstrip. The structure is of multiscale and multimaterial feature and the system matrix may not be well-conditioned if the problem is described...
Accurate electromagnetic (EM) analysis for interconnect structures requires to consider the finite conductivity of involved conductors. The conductor loss could be accounted for through an approximate surface impedance when the skin depth of current is small. However, this approximation may not be valid for large skin depth caused by low frequencies or small conductivities. In this work, we treat...
The electromagnetic (EM) problems with conductive objects can be solved by surface integral equations (SIEs) with the method of moments (MoM) discretization in the integral equation approach. However, the solutions may not be valid for a wide range of frequency and conductivity. In this work, we use the volume integral equations (VIEs) to formulate the problem and propose a point-matching scheme to...
Volume integral equations (VIEs) are usually solved by the method of moments (MoM) with the Schaubert-Wilton-Glisson (SWG) basis function. The SWG basis function requires conformal meshes in geometric discretization and may be inconvenient for inhomogeneous problems. In this work, we propose a point-matching method for solving the VIEs without using any basis function. The method can allow an inhomogeneity...
Reconstructing unknown dielectric objects by integral equation approach requires an efficient solution of volume integral equations (VIEs) and the widely-used method of moments (MoM) with the Schaubert-Wilton-Glisson (SWG) basis function may not be appropriate in such a scenario due to the unknown profile of objects in the imaging domain. In this work, we develop a meshless scheme for solving the...
The method of moments (MoM) in conjunction with the best uniform rational approximation is applied to predict monostatic radar cross section (RCS) pattern from a few pattern value calculations. Numerical results for three-dimensional arbitrarily shaped perfectly electric conductor objects are considered. Good agreement between the proposed technique and the exact solution is observed. Compared with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.