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To solve the scattering from multiple bodies of revolution (BoRs), a fast iterative solver is proposed in this paper. By dividing the original multiple BoRs problem into single BoR problems, the present method can achieve a fast solution by the method of moment for single BoR problem and an efficient strategy for calculating interactions between different BoRs. Due to the rotational symmetry of single...
A full-wave hybrid formulation is proposed for the efficient and accurate modeling of substrate integrated waveguides by rigorously accounting for all possible interactions among elements such as vertical metallic or dielectric posts and coupling or radiating slots. The method is specifically accelerated in order to maximize the efficiency of the analysis of common structures. Its flexibility allows...
We present an analytical formulation to describe the plane-wave propagation through artificial dielectric layers (ADLs) of finite thickness. The formulation is based on a spectral domain approach derived for connected arrays. An analytical circuit model based on this approach is reported, which makes use of lumped loads to represent the reactance associated with each layer and the coupling between...
The concept of multi-functional operation using a single dielectric resonator for radiation, oscillation and filtering purposes is discussed in this paper. Different design realizations are presented to investigate and prove the claimed concept. A dual mode operation for oscillation and radiation characteristics using single dielectric resonator enclosed by modified rectangular cavity has been developed...
This paper presents a dielectric-property determination technique that measures the magnitudes of the reflection and coupling coefficients of coupled antennas. They are plotted on the epsivrpsila epsivrrdquo plane, and the intersection of these two quantities provides the values of epsivrpsila and epsivrrdquo where epsivrpsila is the real part and epsivrrdquo is the imaginary part of the relative...
In this paper, the behavior of the impedance bandwidth, SAR and radiation efficiency of mobile terminal antennas are studied by FDTD-based simulations at a wide frequency range, from 0.6 GHz to 6 GHz. The used models comprise a basic coupling element based antenna structure placed beside a simple dielectric block modeling the user. The results of this paper give novel information about the behavior...
This paper studies the possibility of distinguishing between benign and malignant masses by exploiting the morphology-dependent temporal and spectral characteristics of their microwave backscatter response in ultra-wideband breast cancer detection. The spiculated border profiles of 2-D breast masses are generated by modifying the baseline elliptical rings based upon the irregularity of their peripheries...
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