1College of Physical Science and Technology, Yunnan University, Kunming 650092 2School of Physics and Electronic Information, Yunnan Normal University, Kunming 650092 3Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093
Partially Loaded Cavity Analysis by Using the 2-D FDTD Method
1College of Physical Science and Technology, Yunnan University, Kunming 650092 2School of Physics and Electronic Information, Yunnan Normal University, Kunming 650092 3Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093
摘要A compact two-dimensional (2-D) finite-difference time-domain (FDTD) method is proposed to calculate the resonant frequencies and quality factors of a partially loaded cavity that is uniform in the z−direction and has an arbitrary cross section in the x–y plane. With the description of z dependence by kz, the three-dimensional (3-D) problem can be transformed into a 2-D problem. Therefore, less memory and CPU time are required as compared to the conventional 3-D FDTD method. Three representative examples, a half-loaded rectangular cavity, an inhomogeneous cylindrical cavity and a cubic cavity loaded with dielectric post, are presented to validate the utility and efficiency of the proposed method.
Abstract：A compact two-dimensional (2-D) finite-difference time-domain (FDTD) method is proposed to calculate the resonant frequencies and quality factors of a partially loaded cavity that is uniform in the z−direction and has an arbitrary cross section in the x–y plane. With the description of z dependence by kz, the three-dimensional (3-D) problem can be transformed into a 2-D problem. Therefore, less memory and CPU time are required as compared to the conventional 3-D FDTD method. Three representative examples, a half-loaded rectangular cavity, an inhomogeneous cylindrical cavity and a cubic cavity loaded with dielectric post, are presented to validate the utility and efficiency of the proposed method.
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2011, Vol. 28 
