4-component 2-D CFDFD method in analysis of lossy circular waveguide with fractal rough surface |
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| Authors: | DENG Hong-wei ZHAO Yong-jiu LIU Bing JIANG Wan-shun NING Yue-min |
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| Institution: | 1. College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016,P. R. China
2. The 41th Research Institute of China Electronics Technology Group Corporation, Qingdao 233006, P. R. China |
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| Abstract: | In this paper, equivalent surface impedance boundary condition (ESIBC), which takes fractal parameters (D, G)into SIBC, is implemented in the 4-component 2-D compact finite difference frequency domain (2-D CFDFD) method to analyze the propagation characteristics of lossy circular waveguide with fractal rough surface based on Weierstrass-Mandelbrot (W-M) function. Fractal parameters' effects on attenuation constant are presented in the 3 mm lossy circular waveguide, and the attenuation constants of the first three modes vary monotonically with scaling constant (G) and decrease as the fractal dimension (D) increasing. |
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| Keywords: | fractal roughness 2-D compact fimte difference frequency domain (2-D CFDFD) equivalent surface impedance boundary condition (ESIBC) attenuation constant |
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