Title :
Improvements to the hybrid MoM-PO technique for scattering of plane wave by an infinite wedge
Author :
Gong, Zhuqian ; Xiao, Boxun ; Zhu, Guoqiang ; Ke, Hengyu
Author_Institution :
Sch. of Inf. Sci. & Technol., Sun Yat-Sen Univ., Guangdong, China
Abstract :
The combined method of moments (MoM)-physical optics (PO) approach proposed by Bilow fails in some cases. Based on the geometrical theory of diffraction (GTD), the uniform theory of diffraction (UTD) and the fundamental theory of electromagnetism, Bilow´s diffracted current basis function is modified both within and outside the transition regions. The improved MoM-PO technique is validated by comparison with exact solutions for a right-angled perfectly conducting wedge at normal incidence. The analysis of an impedance wedge also yields accurate results that are in good agreement with available UTD results.
Keywords :
conducting bodies; electromagnetic wave scattering; geometrical theory of diffraction; method of moments; physical optics; physical theory of diffraction; Bilow´s diffracted current basis function; GTD; UTD; fundamental theory of electromagnetism; geometrical theory of diffraction; hybrid MoM-PO technique; impedance wedge; method of moment; perfectly conducting wedge; physical optics; plane wave scattering; uniform theory of diffraction; Impedance; Moment methods; Optical diffraction; Optical scattering; Optical surface waves; Physical theory of diffraction; Radar antennas; Radar cross section; Radar scattering; Tensile stress; Diffracted current basis function; geometrical theory of diffraction (GTD); uniform theory of diffraction (UTD);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2005.861511
