On Analysis of Planar Antennas Using FDTD Method

The FDTD method is a powerful method for analysis of electromagnetic flelds in microwave circuits and devices, antennas, optical devices and transmission lines. In this paper, numerical conditions in analysis of planar antennas using the FDTD method are considered and found for a planar dipole antenna. The obtained results are compared with other and experimental results. DOI: 10.2529/PIERS061002234141 The planar antennas that are useful for mobile communications have been developed for many researchers. The FDTD method is a powerful method for analysis of planar antennas that are deflned as antennas that have planar shapes. We have analyzed several kinds of planar antennas for mobile communications. In this paper, numerical conditions in analysis of planar antennas using the FDTD method (3) are considered and found for a planar dipole antenna. In order to use the method, it is important to decide the number of layers of the PML and the distance between the antenna and the wall of the analytical area. If they are decided appropriately, the computational time and memories are saved. Therefore, the relation between them is discussed precisely. The FDTD method which used their numerical values are applied to several planar antennas (1,2). The obtained results are compared with other and experimental results. 2. FDTD METHOD