Title :
Extended BOR-FDTD algorithm for the analysis of cylindrical guided-wave structures and antennas
Author :
Yang, Zijiang ; Liu, Xiaoping ; Chen, Yinchao
Author_Institution :
South Carolina Univ., Columbia, SC, USA
Abstract :
In this research, a cylindrical, nonuniform finite difference time domain technique is developed for solving Maxwell´s equations with body of revolution (BOR) geometries. The rotational symmetry of structures enables us to employ a two-dimensional (2D) finite difference lattice in the field timestepping procedure by projecting a three-dimensional (3D) Yee cell in cylindrical coordinates (r, φ, z) onto the (ρ, z) plane. The perfectly electric conductor (PEC) or the anisotropic perfectly matched layer (APML) is used to truncate the computational domain in the ρ and z-axes. Extensive numerical results have been derived for various cylindrical guided-wave structures and horn antennas, and these results have been compared with those available in the literature. Excellent agreement and great efficiency have been observed for all of the cases investigated in this research
Keywords :
Maxwell equations; antenna theory; circular waveguides; finite difference time-domain analysis; horn antennas; waveguide theory; 2D finite difference lattice; 3D Yee cell; APML; Maxwell equations; PEC; anisotropic perfectly matched layer; body of revolution geometries; cylindrical guided-wave structures; cylindrical nonuniform technique; extended BOR-FDTD algorithm; field timestepping procedure; finite difference time domain technique; horn antennas; perfectly electric conductor; rotational symmetry; three-dimensional Yee cell; two dimensional finite difference lattice; Algorithm design and analysis; Boundary conditions; Electromagnetic fields; Finite difference methods; Geometry; Horn antennas; Lattices; Maxwell equations; Optical waveguides; Time domain analysis;
Conference_Titel :
SoutheastCon, 2002. Proceedings IEEE
Conference_Location :
Columbia, SC
Print_ISBN :
0-7803-7252-2
DOI :
10.1109/.2002.995588
