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Seyit Sencer Koç
E-mail
skoc@metu.edu.tr
Department
Department of Electrical and Electronics Engineering
ORCID
0000-0002-1978-4613
Scopus Author ID
7003829699
Publications
Theses Advised
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A non-conventional planar phased array based on the field equivalence principle for wide angle steering of Gaussian beams
Cetiner, Ramazan; Yildiz, Hayrullah; Hizal, Altunkan; Koç, Seyit Sencer (2023-01-01)
A non-conventional planar phased array (PA) for generation and steering of Gaussian electromagnetic (EM) beams (GB) is investigated in detail. It includes a new approach. The near field of an ideal virtual antenna (VA), wh...
Finite-Aperture Microwave Bessel Beams with Vortex Twisting, Fracturing, and Dynamic Phase-Shift Control
Yurchenko, Vladimir; ÇİYDEM, MEHMET; Koç, Seyit Sencer (2022-01-01)
—Finite-aperture microwave vortex beams of various structures in the near-, middle-, and far-field propagation zones have been simulated. The decay of external sidelobes leading to the end of non-diffractive propagation wi...
Multilayer grid polarizers: Simulations for millimeter waves
Yurchenko, Vladimir; ÇİYDEM, MEHMET; Gradziel, Marcin; Koç, Seyit Sencer (2021-1-01)
All rights reserved.Multilayer grid polarizers for millimeter waves produced with photolithographic technology have been simulated. Polarizers have spectral bands of enhanced performance where polarization extinction ratio...
Sparse Reconstruction for Near-Field MIMO Radar Imaging Using Fast Multipole Method
Miran, Emre A.; Öktem, Sevinç Figen; Koç, Seyit Sencer (2021-01-01)
Radar imaging using multiple input multiple output systems are becoming popular recently. These applications typically contain a sparse scene and the imaging system is challenged by the requirement of high quality real-tim...
The Fast Multipole Method for Sparse Solution of Linear Inverse Scattering Problems
Miran, Emre Alp; Koç, Seyit Sencer (2018-11-02)
The sparse solution for the linear inverse problems provide useful results for many fundamental engineering applications such as radar imaging. The studies in the literature has shown that the computational methods for the...
VHF suspended plate transmitter antenna design for DVB-T and DAB-T
Ali, Abdul; Ciydem, Mehmet; ALTINTAŞ, AYHAN; Koç, Seyit Sencer (2018-06-01)
This paper presents the design of stacked suspended plate transmitter antenna for digital video and audio broadcasting. Contrary to conventional dipole structures, we have designed the antenna in VHF band (174-254MHz) with...
UWB 3D Near-Field Imaging with a Sparse MIMO Antenna Array for Concealed Weapon Detection
Anadol, Erman; Seker, Ilgin; Camlica, Sedat; Topbas, Tankut Oguz; Koç, Seyit Sencer; Alatan, Lale; Öktem, Sevinç Figen; Aydın Çivi, Hatice Özlem (2018-04-18)
An ultra-wide-band (UWB) multiple-input multiple-output (MIMO) radar with a sparse array is designed and manufactured for three-dimensional near-field imaging applications such as concealed weapon detection. Contrary to ex...
An Efficient Semianalytical Method for Hypersingularity Treatment Over Curved Patches
Selcuk, G.; Koç, Seyit Sencer (2017-05-01)
In this communication, we propose an efficient method to evaluate hypersingular integrals defined on curved surfaces. First an exact expression for hypersingular kernel is derived by projecting the integral on curvilinear ...
K Band Mikroşerit Yama Anten Dizisi Tasarımı
Aydemir, Aslı Eda; Alatan, Lale; Koç, Seyit Sencer; Aydın Çivi, Hatice Özlem (2016-09-03)
Amplitude Tapering Scheme for Through-Element Coupled Antenna Arrays
Miran, Emre Alp; Koç, Seyit Sencer (2016-07-01)
A new approach is proposed to achieve appropriate amplitude distribution for series-fed linear microstrip patch antenna arrays. Through element coupled patches are further investigated to attain more control on the level o...
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