Browsing by Author "Başdemir, Hüsnü Deniz"

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İki izorefraktif ortam arasına yerleştirilmiş empedans sınır koşuluna sahip yarım düzlemden düzlemsel dalgaların saçılması
(2016) Başdemir, Hüsnü Deniz; Umul, Yusuf Ziya; 20399; 06.02. Elektronik ve Haberleşme Mühendisliği; 06. Mühendislik Fakültesi; 01. Çankaya Üniversitesi
İki izorefraktif ortamın sınırına yerleştirilmiş empedans sınır koşuluna sahip bir yarım düzlemden düzlemsel dalgaların saçılması incelenir. Elde edilen alan ifadeleri sayısal olarak analiz edilir.
Line integral representation of fringe waves for perfectly conducting and impedance surfaces
(2014) Başdemir, Hüsnü Deniz; 06.02. Elektronik ve Haberleşme Mühendisliği; 06. Mühendislik Fakültesi; 01. Çankaya Üniversitesi
In this thesis, surface diffraction was investigated for perfectly conducting and impedance cylinders. Moreover, the line integral representations of fringe fields were derived analytically and generalized with using the unit vectors of related edge contours. Hence, the method of physical theory of diffraction was improved with reducing the scattering surface integral to line integral. The derived expressions were applied to perfectly conducting parabolic reflector geometry for investigation of exact diffracted fields. In addition, uniform expressions of scalar fringe waves which are based on the physical theory of diffraction method are derived for an impedance half-plane. The asymptotic and uniform expressions were compared for the impedance half-plane geometry. All these mentioned fields were plotted and analyzed numerically.
Review On The Modified Theory of Physical Optics
(IEEE, 2018) Başdemir, Hüsnü Deniz; 20399; 06.02. Elektronik ve Haberleşme Mühendisliği; 06. Mühendislik Fakültesi; 01. Çankaya Üniversitesi
In this review, modified theory of physical optics approach to the diffraction problem is revisited. The important aspects of the method are explained and steps for the usage of the method are revealed. Also, historical progress of the method is mentioned.
Scattering of plane waves by a half-plane at the interface of two ısorefractive media
(2015) Başdemir, Hüsnü Deniz; 20399; 06.02. Elektronik ve Haberleşme Mühendisliği; 06. Mühendislik Fakültesi; 01. Çankaya Üniversitesi
Scattering of plane waves by a half-plane at the boundary of two isorefractive media is analyzed. The E-polarization case is taking into account. The results were analyzed numerically and compared with a similar previous study. The results are consistent with each other.
Citation - WoS: 1
Citation - Scopus: 2
Wideband Hexagonal Type Antenna Design for 5g Networks
(Ieee, 2017) Yildiran, Orcun; Başdemir, Hüsnü Deniz; Basdemir, Husnu Deniz; 20399; Elektronik ve Haberleşme Mühendisliği; 06.02. Elektronik ve Haberleşme Mühendisliği; 06. Mühendislik Fakültesi; 01. Çankaya Üniversitesi
In this paper, hexagonal type antenna for the next generation (5G) mobile networks is proposed. Both the microstrip feed line and coaxial feed techniques are used to feed the antenna. The best feed point location for both techniques is found to achieve the highest performance. The High Frequency Structural Simulator (HFSS 12.0) is used to simulate the antenna and find out the characteristics. The antenna performance characteristics such as VSWR, return loss, radiation pattern are obtained.