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A position estimation technique using electromagnetic wave has been proposed for object detection in wireless power transmission. However, conventional position estimation method has a problem that position estimation accuracy varies with object position. This paper proposes a position estimation method using hyperbola obtained from time difference and ellipse obtained from path length. Due to the...
It is well known from the independent works of Keller, Deschamps, and Felsen, respectively, that an electromagnetic (EM) point current source positioned in complex space produces a beam wave field which is highly localized about its forward propagation axis. It is noted that the EM field of a complex source beam (CSB) constitutes an exact solution of Maxwell's equations, and it is simply obtained...
New types of devices from electromagnetic (EM) technology and scientific area have emerged from its core in our society for a variety of purposes. EM radiation from these devices has caused growing concern about possible bio-effects and interference produced in the other devices. Our aim is to show the danger so that public can decide the risk they want to take. Quite similar to many phenomenon, it...
Discussed herein is a novel approach entitled reverse operation self-consistent evaluation (ROSE). Specifically, we applied ROSE for the treatment of weak-singular and hypersingular kernels in surface integral equations (SIEs) for the computation of electromagnetic (EM) scattering from perfect electrical conductors (PEC). In this paper, we restrict our discussion to the weak-singular and hypersingular...
This paper presents a rigorous analysis of electromagnetic scattering and transmission of dual-metallic grating screens. The Fourier transform is used to represent the electric and magnetic fields in the spectral domain and the boundary conditions are enforced to obtain simultaneous equations using the mode-matching technique. Numerical results show that the dual-metallic grating screens exhibit asymmetric...
This paper presents an investigation of the electrical property of the multi-layer soil using a short-time matrix pencil method (STMPM). The simulations are conducted in order to investigate the poles on the different electrical property of soil. In simulations, a Gaussian pulse is transmitted to the multi-layer soil with various electrical properties. Poles including the damping factor and natural...
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