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Numerical technique for the analysis of EM field with high speed moving dielectric body by using FDTD method with Overset Grid Generation method considering Lorentz transformation is presented. The characteristic of EM field when incident wave hits the moving dielectric body with high velocity value are analyzed. The accuracy of the proposed technique is validated. Good agreements are obtained between...
The numerical technique for the analysis of the electromagnetic field with moving body or a moving source are required for the effective modeling of new optical devices or microwave devices and also mobile communication field. We have previously proposed the Overset Grid Generation method coupled with FDTD method for the analysis of the EM field with moving boundaries considering Doppler Effect. For...
Many practical engineering applications require the numerical solution for the analysis of the EM field by a moving source and/or a moving body. We have previously proposed the Overset Grid Generation method coupled with FDTD method for the analysis of the EM field with moving boundaries considering Doppler Effect. By overlapping one moving sub-mesh on a static main mesh, each mesh is calculated alternately...
A numerical technique for the analysis of the EM field by a moving source or a moving body can be significantly important for the realization of new optical/nanotechnology devices. We have previously proposed the Overset Grid Generation method coupled with FDTD method for the analysis of the EM field with moving boundaries considering Doppler Effect. By overlapping one moving sub-mesh on a static...
In this study, we investigate the unwanted emission from a simplified microelectro‐mechanical capacitor with sinusoidal and damped motions. A finite‐difference time‐domain method combined with an adaptive local subcell technique is developed to analyze the field emission from the variable capacitor. First, our computational method is confirmed from the time course of the charge accumulated on the...
In this paper, we investigate the unwanted emission from a variable capacitor with sinusoidal motion. Then, a finite-difference time-domain method with an adaptive local sub-cell implementation is applied. First, our computational implementation is verified by computing the time course of the charge accumulated on the electrode of the capacitance with those for the electrode with a fixed separation...
This paper presents an alternative approach for the analysis of EM field with moving boundaries by FDTD method combined with Overset Grid Generation method, considering Lorentz transformation for the higher velocity cases. This approach has been previously proposed for the case of moving/rotating body with empty grids. Here, the approach is expanded to a moving dielectric body that moves linearly...
In this paper, FDTD method combined with Overset Grid Generation method is proposed to the analysis of the EM fields around a rotating body. We have previously proposed this numerical approach for a stationary and uniformly moving body. Lorentz transformation is combined to the analysis to comprise with the high relative velocities. The results of the numerical analysis show the modulations of the...
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