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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Author "Eyyuboğlu, Halil T."

Now showing items 1-20 of 132

A New Design of Dual Band Microstrip Bandpass Filter Based On Peano Fractal Geometry: Design and Simulation Results

Mezaal, Yaqeen S.; Eyyuboğlu, Halil T.; Ali, Jawad K. (2013-09)

The proposed filter design topology is based on dual coupled resonators constructed in the form of Peano fractal geometry. A dual-band microstrip bandpass filter with a quasi-elliptic response has been designed for first ...
A new quadrature routine for improper and oscillatory integrals

Sermutlu, Emre; Eyyuboğlu, Halil T. (Elsevier Science, 2007-01-01)

In MATLAB environment, a new quadrature routine based on Gaussian quadrature rule has been developed. Its performance is evaluated for improper integrals, rapidly oscillating functions and other types of functions requiring ...
A Novel Design of Two Loosely Coupled Bandpass Filter Based On Hilbert-Zz Resonator With Higher Harmonic Suppression

Mezaal, Yaqeen S.; Eyyuboğlu, Halil T.; Ali, Jawad K. (IEEE, 2013)

New characteristics of fractal design scheme has been introduced to generate compact two poles capacitively coupled microstrip bandpass filter by using additional coupling stubs for different wireless applications. The ...
A study of source plane Mathieu beams

Eyyuboğlu, Halil T. (Springer, 2008-06)

We derive the source field expressions of different Mathieu beams. In particular, Mathieu beams consisting of the infinite summations of J-type Bessel functions and their Gaussian counterparts are studied. Mathieu beams ...
Active laser radar systems with stochastic electromagnetic beams in turbulent atmosphere

Cai, Yangjian; Korotkova, Olga; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2008-09-29)

Propagation of stochastic electromagnetic beams through paraxial ABCD optical systems operating through turbulent atmosphere is investigated with the help of the ABCD matrices and the generalized Huygens-Fresnel integral. ...
An analysis on radius of curvature aspects of hyperbolic and sinusoidal Gaussian beams

Eyyuboğlu, Halil T.; Ji, Xiaoling (Springer, 2010-10)

The effective radius of curvature of hyperbolic and sinusoidal Gaussian beams in free space and turbulent atmosphere is studied analytically and numerically. It is shown that the radius of curvature rises with growing ...
Analysis of flat-topped Gaussian vortex beam scintillation properties in atmospheric turbulence

Elmabruk, Kholoud; Eyyuboğlu, Halil T. (Spie-Soc Photo-Optical Instrumentation Engineers, 2019-06)

We analyze the scintillation properties of a flat-topped Gaussian vortex beam propagating in a weakly turbulent atmosphere. We utilize a random phase screen model to perform this analysis. We evaluate the scintillation ...
Analysis of laser multimode content on the angle-of-arrival fluctuations in free-space optics access systems

Eyyuboğlu, Halil T.; Baykal, Yahya (Spie-Soc Photo-Optical Instrumentation Engineers, 2005-05)

The effects of laser beam multimode content on the angle-of-arrival fluctuations are examined for free-space optics (FSO) access systems. Multimode excitation is represented by coherent addition of Hermite-Gaussian modes. ...
Analysis of reciprocity of cos-Gaussian and cosh-Gaussian laser beams in a turbulent atmosphere

Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2004-10-04)

In a turbulent atmosphere, starting with a cos-Gaussian excitation at the source plane, the average intensity profile at the receiver plane is formulated. This average intensity profile is evaluated against the variations ...
Analysis of wave structure functions

Eyyuboğlu, Halil T. (IEEE, 2008)

Wave structure function (WSF) of spherical wave is used in extended Huygens-Fresnel integral to induce the effect of turbulent atmosphere on the propagating laser beam. Depending on the approximation made and the choice ...
Angle-of-arrival fluctuations for general-type beams

Eyyuboğlu, Halil T.; Baykal, Yahya (Spie-Soc Photo-Optical Instrumentation Engineers, 2007-09)

Starting with the recently introduced phase correlation function of a general-type beam, the angle-of-arrival fluctuations are derived and evaluated in atmospheric turbulence for lowest-order Gaussian, cos-Gaussian, ...
Annular, cosh and cos Gaussian beams in strong turbulence

Eyyuboğlu, Halil T. (Springer, 2011-06)

For the strong atmospheric turbulence regime, the asymptotic on-axis scintillation behavior of annular, cosh and cos Gaussian beams is theoretically derived and illustrated with numerical examples. It is observed from the ...
Apertured averaged scintillation of fully and partially coherent Gaussian, annular Gaussian, flat toped and dark hollow beams

Eyyuboğlu, Halil T. (Elsevier Science Bv., 2015-03-15)

Apertured averaged scintillation requires the evaluation of rather complicated irradiance covariance function. Here we develop a much simpler numerical method based on our earlier introduced semianalytic approach. Using ...
Area scintillations of Bessel Gaussian and modified Bessel Gaussian beams of zeroth order

Eyyuboğlu, Halil T. (Springer, 2010-01)

As an extension of our previous study, the area scintillation aspects of Bessel Gaussian and modified Bessel Gaussian beams of zeroth order are investigated. The analysis is carried out on the basis of equal source sizes ...
Average intensity and spreading of an elegant Hermite-Gaussian beam in turbulent atmosphere

Yuan, Yangsheng; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2009-06-22)

The propagation of an elegant Hermite-Gaussian beam (EHGB) in turbulent atmosphere is investigated. Analytical propagation formulae for the average intensity and effective beam size of an EHGB in turbulent atmosphere are ...
Average intensity and spreading of cosh-Gaussian laser beams in the turbulent atmosphere

Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2005-02-20)

The average intensity and spreading of cosh-Gaussian laser beams in the turbulent atmosphere are examined. Our research is based principally on formulating the average-intensity profile at the receiver plane for cosh-Gaussian ...
Average intensity and spreading of partially coherent standard and elegant Laguerre-Gaussian beams in turbulent atmosphere

Wang, F.; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (E M W Publishing, 2010)

Analytical expressions for the average intensity, mean-squared beam width and angular spread of partially coherent standard and elegant Laguerre-Gaussian (LG) beams propagating in turbulent atmosphere are derived. The ...
Average irradiance and polarization properties of a radially or azimuthally polarized beam in a turbulent atmosphere

Cai, Yangjian; Qiang, Lin; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Society of America, 2008-05-26)

Analytical formulas are derived for the average irradiance and the degree of polarization of a radially or azimuthally polarized doughnut beam (PDB) propagating in a turbulent atmosphere by adopting a beam coherence-polarization ...
Beam wander characteristics of cos and cosh-Gaussian beams

Çil, Celal Zaim; Eyyuboğlu, Halil T.; Baykal, Yahya; Cai, Yangjian (Springer, 2009-06)

Within the context of a general beam formulation, beam wander characteristics of cos and cosh-Gaussian beams are derived and numerically evaluated. In our graphs, the fundamental Gaussian beam is used as a benchmark for ...
Beam Wander Characteristics of Flat-Topped, Dark Hollow, Cos and Cosh-Gaussian, J(0)- And I-0- Bessel Gaussian Beams Propagating In Turbulent Atmosphere: A Review

Eyyuboğlu, Halil T.; Baykal, Yahya; Çil, Celal Z.; Korotkova, Olga; Cai,Yangjian (Spie-Int Soc Optical Engineering, 2010)

In this paper we review our work done in the evaluations of the root mean square (rms) beam wander characteristics of the flat-topped, dark hollow, cos-and cosh Gaussian, J(0)-Bessel Gaussian and the I-0-Bessel Gaussian ...

Now showing items 1-20 of 132

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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Author "Eyyuboğlu, Halil T."

Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Author "Eyyuboğlu, Halil T."

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