Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/260
Browse
Browsing Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu by Institution Author "Basdemir, Husnu Deniz"
Now showing 1 - 11 of 11
- Results Per Page
- Sort Options
Article Citation - WoS: 4Citation - Scopus: 4An Analytical Solution for the Plane Wave Diffraction by a Resistive Half-Plane Residing at the Interface of Left and Right Handed Media(Elsevier Gmbh, 2019) Basdemir, Husnu DenizThe diffraction of waves by a resistive half-plane lying on the interface of left and right handed media is investigated in this study. Because of the anomalous refraction property of left handed media, shadow boundary shifts toward to the lower surface of the half-plane. In order to obtain the shifted boundary, diffracted waves are divided to subfields. Thus, obtained diffracted waves compensates the deficiency of geometries optics fields at the transition regions. The uniform version of waves is obtained by using the uniform theory of diffraction. The wave behaviors are examined numerically.Article Citation - WoS: 5Citation - Scopus: 5Bessel Beam Diffraction by an Aperture in an Opaque Screen(Hindawi Ltd, 2015) Basdemir, Husnu DenizThe scattering of the Bessel beam by a circular aperture in an opaque screen is investigated by the geometrical theory of diffraction approach. The geometrical optics and diffracted and scattered fields are obtained. The effect of the aperture to the scattering process is analyzed. The uniform versions of field expressions are derived. The geometrical optics and diffracted and scattered fields are examined numerically.Article Citation - WoS: 6Citation - Scopus: 8Diffraction of Waves by a Perfect Electromagnetic Conductor Half-Plane Between Isorefractive Media(Springer, 2019) Basdemir, Husnu DenizIn this study, diffraction of waves by a perfectly electromagnetic conductor half-plane which is lying at the boundary of isorefractive media is investigated. The diffracted field expressions are constructed by using the relation between scattered geometrical optics fields and the transition boundaries. The high frequency asymptotic expressions of diffracted fields reach infinite magnitude values at the transition boundaries. The uniform expressions of fields are obtained by using the uniform theory of diffraction method in order to obtain the finite magnitude values at the transition boundaries and the results are analyzed numerically for different set of parameters.Article Citation - WoS: 6Citation - Scopus: 6Directive Line Source Scattering by a Half-Plane Between Two Isorefractive Media(Elsevier Gmbh, Urban & Fischer verlag, 2017) Basdemir, Husnu DenizA perfectly conducting half-plane which is lying at the interface between two isorefractive media is investigated for a directive line source illumination. For this purpose, a directive line source is defined by passing a plane-wave from an aperture. Also, more suitable function than the Fresnel function is defined for cylindrical sources. The scattered field and its subfields are obtained by a new method. Consequently, all the mentioned fields are analyzed numerically. (C) 2016 Elsevier GmbH. All rights reserved.Article Citation - WoS: 6Citation - Scopus: 7Modeling of an Interface Between Isorefractive Media by a Resistive Surface(Optical Soc Amer, 2018) Basdemir, Husnu DenizIn this study, the scattering of plane waves by a half-plane with different face impedances, which lie between isorefractive media, is analyzed. A new approach for the solution of this scenario is proposed. According to this proposal, the problem of isorefractive media and an impedance half-plane is modeled by a junction of resistive and impedance sheets. Thus the diffraction coefficient of the construction is obtained with the aid of the equivalent problem. The uniform expression of the diffracted waves is derived by the method of the uniform theory of diffraction. The scattered and diffracted waves are investigated numerically. (c) 2018 Optical Society of AmericaArticle Citation - WoS: 3Citation - Scopus: 4Po and Ptd Approach To the Diffraction Problem by a Resistive Half-Plane(Taylor & Francis Ltd, 2014) Basdemir, Husnu DenizDiffracted fields from a resistive half-plane were investigated by the method of physical optics (PO) and the physical theory of diffraction. The coefficient of the PO scattering integral was derived for the first time for the resistive half-plane. Uniform fringe field expressions were obtained in terms of the Fresnel functions. The resultant expressions of the fringe fields were plotted and analyzed numerically.Editorial Citation - WoS: 3Citation - Scopus: 2Reply To the "comments on 'fringe Waves in an Impedance Half-Plane(E M W Publishing, 2014) Basdemir, Husnu DenizArticle Citation - WoS: 10Citation - Scopus: 10Scattering of Evanescent Plane Waves by a Black Wedge at the Interface Between Isorefractive Media(Ieee-inst Electrical Electronics Engineers inc, 2016) Basdemir, Husnu DenizThe scattering of evanescent plane waves by a black wedge located at the interface of two isorefractive media is investigated in order to extend the results for the perfectly conducting half-plane case reported by Uslenghi (2013). The geometrical optics, in addition to the diffracted and scattered fields, are analyzed numerically. The effect of the isorefractive media on the diffracted field and the effect of the evanescent plane-wave excitation on the scattered field are also examined.Article Citation - WoS: 3Citation - Scopus: 3Scattering of Inhomogeneous Plane Waves by a Truncated Cylindrical Cap(Taylor & Francis Ltd, 2015) Basdemir, Husnu DenizScattered fields of the inhomogeneous plane waves from a truncated cylindrical cap are obtained. Also the uniform diffracted fields are performed in terms of the Fresnel functions. Reflected and diffracted fields are obtained by using the physical optics and the geometrical theory of diffraction methods, respectively. All the mentioned results are plotted numerically for various numerical parameters.Article Citation - WoS: 8Citation - Scopus: 8Scattering of Plane Waves by a Rational Half-Plane Between Dng Media(Elsevier Gmbh, 2019) Basdemir, Husnu DenizScattering of plane waves by a hard-soft half-plane which is lying between double negative material is investigated. The diffracted fields are determined by dividing the diffraction coefficient to four subfields for satisfying the boundary conditions. It is observed that the shadow boundary shifts towards to lower surface of the half-plane. Also geometric optics fields are determined by using the geometry of the problem. As a result, the behavior of the fields is investigated numerically.Article Citation - WoS: 12Citation - Scopus: 12Scattering of Waves by a Perfectly Conducting Wedge Residing at the Interface Between Two Isorefractive Media(Ieee-inst Electrical Electronics Engineers inc, 2016) Basdemir, Husnu DenizScattered field by a wedge that is surrounded by isorefractive media is analyzed. A series-based method is introduced and applied to the wedge problem with soft boundary condition. The fields are examined numerically. The numerical results show that the proposed method is suitable for analysis of these kinds of problems.
