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COMPACT FOUR-COMPONENT 2-D FDFD METHOD WITH EQUIVALENT SURFACE IMPEDANCE BOUNDARY CONDITION FOR MULTILAYER METAL-COATED WAVEGUIDE 被引量:1
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作者 赵伟 赵永久 +2 位作者 邓宏伟 姜万顺 宁曰民 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2010年第3期275-279,共5页
A compact four-component two-dimensional (2-D) finite-difference frequency domain (FDFD) method with the equivalent surface impedance boundary condition is used to analyze the dispersion characteristics of multila... A compact four-component two-dimensional (2-D) finite-difference frequency domain (FDFD) method with the equivalent surface impedance boundary condition is used to analyze the dispersion characteristics of multilayer metal-coated waveguides. According to the equivalent surface impedance boundary condition,the relationship between transverse field components on the boundary can be easily depicted. Once the eigen equation is solved,the propagation constant can be obtained as the eigen value for a given frequency. Results of the proposed method agaree well with those of high frequency structure simulator(HFSS). 展开更多
关键词 WAVEGUIDES eigen equation equivalent surface impedance boundary condition propagation constant
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4-component 2-D CFDFD method in analysis of lossy circular waveguide with fractal rough surface
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作者 邓宏伟 赵永久 +2 位作者 刘冰 姜万顺 宁曰民 《Journal of Shanghai University(English Edition)》 CAS 2011年第3期185-189,共5页
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... 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 an- alyze 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. 展开更多
关键词 FRACTAL ROUGHNESS 2-D compact fimte difference frequency domain (2-D CFDFD) equivalent surface impedance boundary condition (ESIBC) attenuation constant
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