RF and Microwaves Essay Example | Topics and Well Written Essays - 1500 words

RF and Microwaves - Essay Example In this paper, we are going to investigate the behavior of the antenna and make a proposal for a suitable solution to the circuit issue. Analysis in this experiment will be conducted using the Finite Difference Time Domain method (FDTD) method. This analysis will expose the variation of these characteristics with the height of the antenna. The Finite Difference Time Domain method (FDTD) method allows for direct calculation of the Maxwell’s curl equations on lattices in a given time domain. The choice of the rack server is very critical in the application of the Finite Difference Time Domain method (FDTD). It should have a size small enough to allow the realization of results that have high accuracy at frequencies that are very high and large enough to allow manageability of the available resources. The size of the cell is affected by the type of materials that are present in the rack server (Hiebel, 2010). The higher the amount of permittivity, the shorter the size of the wavelength that will be realized at a defined frequency and hence a smaller size of the cell will be required (Nurnberger & Volakis, 2000). This is defined by a rule that is smaller than a tenth of the size of the smallest wavelength and this can be defined by the size of the Finite Difference Time Domain method (FDTD) space and the maximum fr equency of interest. After the size of the cell has been selected, the time step that is maximum can be determined using the Courant condition of stability. Step times that are smaller are also permissible in this experiment and if they are used, they may result into results with an improved accuracy. Large time steps normally result into instability (Luebbers, 2004). In the use of the FDTD method, the field of incidence must be incident and must also be analytically specified. If the resonant geometries used are strong, the excitation of the finite- difference time-domain