Browsing by Author "Altıntaş, Ayhan"
Now showing items 21-40 of 78
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Feasibility study of installation of solar panels on a high power HF antenna terrain
(EMC Türkiye, 2015) -
Focusing ability of a microsize graphene-based cylindrical reflector in the THz range illuminated by electromagnetic plane wave
(IEEE, 2016-07)The scattering of the H-polarized plane wave by a two-dimensional (2-D) parabolic reflector made of graphene placed in the free space is simulated by using the Method of Analytical Regularization (MAR) technique. The total ... -
A GIS-Aided frequency planning tool for terrestrial broadcasting and land mobile services
(Springer, Dordrecht, 2002)Radio provides an important technology for emergency preparedness and emergency response. It not only offers rapid communication for emergency workers within the disaster area, but also affords the means of disseminating ... -
Integral-equation study of ray effects and natural-mode resonances in a 2-D dielectric prism
(IEEE, 2015)We analyze the interplay of two different types of electromagnetic behavior demonstrated by a 2-D dielectric prism: Geometrical Optics and resonance. As it is shown, the first is responsible, for instance, for enhanced ... -
Investigation of planar and conformal printed arrays for MIMO performance analysis
(IEEE, 2006)MIMO channel capacity of printed arrays with dipole elements is analyzed. A MIMO channel model based on electric fields is used. The effects of mutual interactions among the array elements through space and surface waves ... -
Large flat plate models in the physical optics method for RCS calculations
(IEEE, 2004-09)The calculation of Radar Cross Section (RCS) of arbitrarily large perfectly conducting body is presented. The body is modelled as triangular meshes of any size by the help of graphical tools. For the calculation of scattered ... -
Lasing modes of infinite periodic chain of quantum wires
(IEEE, 2009-06-07)In this paper, we study the scattering and eigenvalue problems for a periodic open optical resonator that is an infinite chain of active circular cylindrical quantum wires standing in free space. The scattering problem is ... -
Last PhD supervised by Professor Kouyoumjian: Extended UTD by Dr. Buyukdura
(IEEE, 2011)While he is a Professor Emeritus at Ohio State, Professor Kouyoumjian supervised a thesis work by Merih Buyukdura. They first derived a dyadic Green's function for a PEC wedge using spherical wave functions and employed ... -
Light-controlled polarization of MM-waves with photo-excited gratings in a resonant semiconductor slab
(Advanced Electromagnetics, 2019)We investigated photoconductive gratings in the resonant semiconductor layers as light-controlled polarizers for the millimeter (MM) waves. We compared the effects of strip-like, wire-like, and fin-like gratings excited ... -
The method of analytical regularization in the electromagnetic wave scattering by thin disks
(Institution of Engineering and Technology, 2007)We consider the problem of diffraction of an arbitrary electromagnetic wave by a thin disk made from different materials and located in free space. Here we imply a zero- thickness perfectly electrically conducting (PEC) ... -
The method of regularization and its application to some EM problems
(Springer, 2000)The regularization of the integral equations for the solution of electromagnetic problems is discussed. The technique includes a semi-analytic inversion of the integral operator resulting in equation of the Fredholm second ... -
Microcavity lasers on polymer materials: Boundary integral equation modeling and experiments
(IEEE, 2015-04)We consider the modeling and experiments with polymer dye-doped lasers shaped as thin flat cavities, allowing one to consider them as two-dimensional (2-D) active cavities. We focus our modeling on the H-polarized ... -
Microwave whispering-gallery-mode photoconductivity measurement of recombination lifetime in silicon
(Advanced Electromagnetics, 2019)We present a whispering-gallery-mode resonance-enhanced microwave-detected photoconductivity-decay method for contactless measurement of recombination lifetime in highresistivity semiconductor layers. We applied the method ... -
Mikrodalga karasal radyo link analiz ve simülasyonlarının Rec. ITU-R P.530 tavsiyesine uygun olarak gerçeklenmesi
(URSI, 2014)Bu çalışmada, NATO Band 3+ (1350 – 2690 MHz) ve NATO Band 4 (4400 – 5000 MHz) frekanslarında çalışan karasal mikrodalga radyo linklerin analizi için gerekli olan yansıma noktası hesabının iyileştirilmesi ve yansımadan ... -
Milli frekans yönetim sistemi
(2001) -
A model with electric fields for the inclusion of mutual coupling effects in the MIMO channel
(IEEE, 2007)Multiple input multiple output (MIMO) wireless communication systems have been a focus of interest, due to their ability to increase the capacity in rich scattering environments by using multi-element antenna arrays both ... -
Modelling a resistive-reflector antenna by the complex source-dual series approach: the 2-D case of H-polarization
(IEEE, 1995)The simulation of reflector antenna is normally conducted under an assumption of the perfect conductivity of reflector. This paper presents an analysis of resistive reflector beamforming using modified method of regularization ... -
Multipath fading effect on terrestrial microwave LOS radio links
(IEEE, 2015-07)In this paper, the calculation of both the total received power with the effect of the ground reflection and the fade margin to find out the link availability for terrestrial microwave LOS (line-of-sight) radio links is ...
