Title :
4-component 2-D CFDFD with ESIBC application for coaxial waveguide with fractal-regular rough surfaces
Author :
Lu Zhang ; Hong-wei Deng ; Yong-jiu Zhao ; Wan-Shun Jiang ; Yue-Min Ning
Author_Institution :
Coll. of Inf. Sci. & Technol., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
The fractal-regular profile with the properties of stochastic, multi-scale and self-affinity is introduced to present the rough inner surface of the lossy coaxial waveguide in this letter. Equivalent surface impedance boundary condition (ESIBC) is implemented in the 4-component compact 2-D finite difference frequency domain (2-D CFDFD) method to analyze the propagation characteristics of lossy coaxial waveguide with fractal rough surface based on Weierstrass-Mandelbrot (M-W) function. The advantages of the 4-component 2-D CFDFD method are reserved by applying ESIBC. The effects of fractal parameters (D, G) on attenuation constant are presented and the results are discussed in detail.
Keywords :
coaxial waveguides; finite difference methods; fractals; frequency-domain analysis; rough surfaces; surface impedance; 4-component 2-D CFDFD; ESIBC application; Weierstrass-Mandelbrot function; attenuation constant; equivalent surface impedance boundary condition; finite difference frequency domain; fractal parameters; fractal-regular profile; fractal-regular rough surfaces; lossy coaxial waveguide; propagation characteristics; rough inner surface; self-affinity; Boundary conditions; Coaxial components; Finite difference methods; Fractals; Frequency domain analysis; Rough surfaces; Stochastic processes; Surface impedance; Surface roughness; Surface waves; 2D-CFDFD; ESIBC; attenuation constant; fractal-regular rough surfaces; lossy coaxial waveguide;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4076-4
DOI :
10.1109/MAPE.2009.5355884
