Browsing by Keywords "Dielectrics"
Now showing items 1-11 of 11
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Accurate solutions of scattering problems involving low-contrast dielectric objects with surface integral equations
(Institution of Engineering and Technology, 2007)We present the stabilization of the surface integral equations for accurate solutions of scattering problems involving low-contrast dielectric objects. Unlike volume formulations, conventional surface formulations fail to ... -
Analysis of slotted sectoral waveguides embedded in cylindrically stratified media using closed-form Green's function representations
(IEEE, 2013)Slotted waveguide antenna arrays with dielectric covers are widely used in both military and civil applications due to their low-profile, high power handling capacity, and the ability to conform to the host platform. ... -
Band alignment issues related to HfO2/SiO2/p-Si gate stacks
(American Institute of Physics, 2004-12-15)The valence and conduction band densities of states for the HfO2/SiO2/Si structure are determined by soft x-ray photoemission and inverse photoemission. First principles calculations are used to help in assigning valence ... -
Comparison of integral-equation formulations for the fast and accurate solution of scattering problems involving dielectric objects with the multilevel fast multipole algorithm
(Institute of Electrical and Electronics Engineers, 2009)We consider fast and accurate solutions of scattering problems involving increasingly large dielectric objects formulated by surface integral equations. We compare various formulations when the objects are discretized with ... -
An effective preconditioner based on schur complement reduction for integral-equation formulations of dielectric problems
(IEEE, 2009)The author consider effective preconditioning of recently proposed two integral-equation formulations for dielectrics; the combined tangential formulation (CTF) and the electric and magnetic current combined-field integral ... -
Improving the accuracy of the surface integral equations for low-contrast dielectric scatterers
(IEEE, 2007)Solutions of scattering problems involving low-contrast dielectric objects are considered by employing surface integral equations. A stabilization procedure based on extracting the non-radiating part of the induced currents ... -
Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts
(Journal of Computational Physics, 2008)We present a novel stabilization procedure for accurate surface formulations of electromagnetic scattering problems involving three-dimensional dielectric objects with arbitrarily low contrasts. Conventional surface integral ... -
On the errors arising in surface integral equations due to the discretization of the identity operator
(IEEE, 2009)Surface integral equations (SIEs) are commonly used to formulate scattering and radiation problems involving three-dimensional metallic and homogeneous dielectric objects with arbitrary shapes. For numerical solutions, ... -
Simulating a wavelength-size 2-D lens with an accurate numerical method
(IEEE, 2001)The effect of a localized light source directivity improvement due to an arbitrarily shaped dielectric cylinder taken as a 2-D model of a dielectric lens is studied. The source is simulated by the field of a complex ... -
Stabilization of integral-equation formulations for the accurate solution of scattering problems involving low-contrast dielectric objects
(Institute of Electrical and Electronics Engineers, 2008)The solution of scattering problems involving low-contrast dielectric objects with three-dimensional arbitrary shapes is considered. Using the traditional forms of the surface integral equations, scattered fields cannot ... -
Structural and phase evolution in mechanically alloyed calcium copper titanate dielectrics
(2013)Nanocrystalline calcium-copper-titanate (CCTO) dielectric powders were prepared by mechanical alloying. Phase transformations and structural evolution of the mechanically activated powders were investigated through the ...
