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Konu "Edge" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

Konu "Edge" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

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  • Apertured paraxial Bessel beams 
    Umul, Yusuf Ziya (Optical Soc Amer, 2010-03)
    The paraxial Bessel beam is obtained by applying an approximation in the wavenumbers. The scattering of the beams by a circular aperture in an absorbing screen is investigated. The scattered fields are expressed in terms ...
  • Beam diffraction by a resistive half-plane 
    Umul, Yusuf Ziya (Optical Soc Amer, 2015-04-01)
    The scattering of a Gaussian beam by a resistive half-screen is investigated. Far-field approximation is used in evaluation of geometrical optics and diffracted waves. The uniform expression of the diffracted waves by the ...
  • Diffraction of Cylindrical Waves by a Transmissive Half-Plane 
    Umul, Yusuf Ziya (Asme, 2017-10)
    The scattered acoustic waves by a transmissive half-plane, which is illuminated by a line source, are investigated. The high-frequency diffracted wave expressions are obtained by taking into account a resistive half-screen ...
  • Diffraction of homogeneous and inhomogeneous plane waves by a planar junction between perfectly conducting and impedance half-planes 
    Umul, Yusuf Ziya (Optical Soc Amer, 2007-01)
    The problem of diffraction of homogeneous and inhomogeneous plane waves at the discontinuity formed by perfectly conducting and impedance half-planes is examined by the method of modified theory of physical optics (MTPO). ...
  • Effect of the shadow geometry on diffraction 
    Umul, Yusuf Ziya (Optical Soc Amer, 2008-12)
    The effect of the scatterer surface on the shadow region is examined by using the surface integrals of the modified theory of physical optics. It is shown that the shadow geometry has a considerable effect on the structure ...
  • Equivalent functions for the Fresnel integral 
    Umul, Yusuf Ziya (Optical Soc Amer, 2005-10-17)
    Fresnel integral is modeled with three equivalent functions. The first function is derived by considering the sum of the first term of the Fresnel integral's asymptotic expansion {(F) over cap (x)} and an exponential ...
  • Modified diffraction theory of Kirchhoff 
    Umul, Yusuf Ziya (Optical Soc Amer, 2008-08)
    The diffraction theory of Kirchhoff is reinterpreted and a new form of a surface diffraction integral is developed by using the axioms of the modified theory of physical optics, which leads to the exact scattered fields ...
  • Modified theory of physical optics approach to wedge diffraction problems 
    Umul, Yusuf Ziya (Optical Soc Amer, 2005-01-10)
    The problem of diffraction from a perfectly conducting wedge is examined with the modified theory of physical optics (MTPO). The exact wedge diffraction coefficient is compared with the asymptotic edge waves of MTPO integral ...
  • Scattering of a line source by a cylindrical parabolic impedance surface 
    Umul, Yusuf Ziya (Optical Soc Amer, 2008-07)
    The scattering of the radiated fields of a line source by a cylindrical parabolic reflector, which has impedance boundary conditions on its surface, is obtained by using the surface integrals of the modified theory of ...
  • Scattering of inhomogeneous plane waves by a resistive half-screen 
    Umul, Yusuf Ziya (Optical Soc Amer, 2013-12-01)
    The scattering process of inhomogeneous plane waves by a resistive half-plane is investigated by using the exact diffracted field expressions. The uniform field representations are obtained with the aid of the uniform ...
  • Simplified uniform theory of diffraction 
    Umul, Yusuf Ziya (Optical Soc Amer, 2005-07-01)
    Simple exponential functions that approach zero for reflection and shadow boundaries are considered to cancel the infinite values of diffraction coefficients at these regions. This method is applied to a wedge diffraction ...
  • Uniform boundary diffraction wave theory of Rubinowicz 
    Umul, Yusuf Ziya (Optical Soc Amer, 2010-07)
    Rubinowicz introduced a uniform asymptotic evaluation of the boundary diffraction wave at the transition region [Ann. Phys. (Leipzig) 378, 339 (1924)]. The uniform theory of Rubinowicz is generalized for the improved ...
  • Young-Kirchhoff-Rubinowicz theory of diffraction in the light of Sommerfeld's solution 
    Umul, Yusuf Ziya (Optical Soc Amer, 2008-11)
    Kirchhoff's theory of diffraction is derived by transforming the exact solution of Sommerfeld into surface integrals for the half-plane problem. It is shown that the exact solution directly yields the integral theorem of ...