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.
Based on the modified image theory, the FDIE of a thin wire placed at arbitrary direction in lossy half-space is built, and the corresponding TDIE is obtained by the inverse Fourier transformation. The transient currents induced on the wire are calculated by the time domain MoM combined with MOT. It is shown, compared with reference, the method herein is effective and the conductivity of the soil...
For the modeling of electromagnetic scatter of thin metal wires located above or under real ground, a new numerical method based on time domain integral equations is presented. The influence of lossy ground is taken into account via Fresnel space-time reflection coefficient. The integral equations are solved efficiently by method of moments combined with marching on in time procedure. The calculated...
The electric field integral equation (EFIE), based on electromagnetic field equivalence principle, is solved with method of moment accelerated by fast multipole method (FMM). Having established the Pocklington integral equation of thin-wire antennas in infinite space, the fast multipole method is adopted to accelerate matrix-vector multiplication in iterative operation of linear system of equations...
In this paper, the effect of ionosphere to the lightning radiation magnetic field is investigated using Sommerfeld integral. Supposing that the ionosphere is perfect conductor layer, the rigorous and simplified expressions of magnetic field are both obtained. Based on the engineering model, the obtained expression is applied to analyzing the characteristics of lightning radiation magnetic field. The...
New time domain integral equations of single and two identical coupled thin wire antennas located above real ground are presented, which can be converted into a simple form expressed only by vector potential. The influence of the lossy ground is taken into account via Fresnel space-time reflection coefficient, and the equations are solved efficiently by method of moments (MOM) combined with marching...
In order to improve the efficiency of the computation of complex wire structure, combined with moment method (MoM), a conjugate gradient FFT method (CG-FFT) is developed to solve the integral equation. Compared with the results computed by NEC, the validity of this method is verified. Using this method, the shielding effectiveness (SE) of wire structure is computed and the factors affect the SE are...
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.