Kılıç, Veli Tayfun
Loading...
Profile URL
Name Variants
Kilic, V.T
Kilic, Veli Tayfun
Kiliç, Veli Tayfun
Kılıç, Veli Tayfun
Veli Tayfun Kilic
Kilic, Veli Tayfun
Kiliç, Veli Tayfun
Kılıç, Veli Tayfun
Veli Tayfun Kilic
Job Title
Dr. Öğr. Üyesi
Email Address
tayfun.kilic@agu.edu.tr
Main Affiliation
02.05. Elektrik & Elektronik Mühendisliği
Status
Current Staff
Website
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Sustainable Development Goals
13
CLIMATE ACTION
0
Research Products
15
LIFE ON LAND
0
Research Products
8
DECENT WORK AND ECONOMIC GROWTH
0
Research Products
10
REDUCED INEQUALITIES
0
Research Products
2
ZERO HUNGER
0
Research Products
6
CLEAN WATER AND SANITATION
0
Research Products
14
LIFE BELOW WATER
0
Research Products
11
SUSTAINABLE CITIES AND COMMUNITIES
0
Research Products
16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
5
GENDER EQUALITY
0
Research Products
9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
0
Research Products
7
AFFORDABLE AND CLEAN ENERGY
1
Research Products
4
QUALITY EDUCATION
0
Research Products
1
NO POVERTY
0
Research Products
17
PARTNERSHIPS FOR THE GOALS
0
Research Products
3
GOOD HEALTH AND WELL-BEING
0
Research Products
12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
Documents
20
Citations
180
h-index
6
Documents
20
Citations
139
Scholarly Output
21
Articles
12
Views / Downloads
1/0
Supervised MSc Theses
3
Supervised PhD Theses
0
WoS Citation Count
44
Scopus Citation Count
52
WoS h-index
3
Scopus h-index
4
Patents
0
Projects
0
WoS Citations per Publication
2.10
Scopus Citations per Publication
2.48
Open Access Source
11
Supervised Theses
3
| Journal | Count |
|---|---|
| -- 10th International Conference on Computing, Engineering and Design, ICCED 2024 -- Jeddah -- 208836 | 1 |
| -- 1st IEEE Global Power, Energy and Communication Conference, GPECOM 2019 -- Nevsehir; Perissia Hotel and Convention Center -- 150174 | 1 |
| -- 2021 International Conference on Circuits, Controls and Communications, CCUBE 2021 -- Bangalore -- 177194 | 1 |
| 2022 International Conference on Electronics Computing and Communication Technologies -- JUL 08-10, 2022 -- Bengaluru, INDIA | 1 |
| Archives of Electrical Engineering | 1 |
Current Page: 1 / 3
Scopus Quartile Distribution
Competency Cloud
21 results
Scholarly Output Search Results
Now showing 1 - 10 of 21
Conference Object Gain Enhancement of a mmWave Patch Antenna Array Having Limited Number of Input Ports(Institute of Electrical and Electronics Engineers Inc., 2024) Keskin, Mehmet Ziya; Yentur, Abdulkadir; Ozdur, Ibrahim T.; Kiliç, Veli TayfunmmWave sensors are rapidly being used in various fields due to their low power consumption, compact size, and cost-effectiveness, particularly for applications like target detection and tracking. This study investigates the gain enhancement of a patch antenna array operating in the mmWave frequency band of 76 GHz - 81 GHz, where commercial single-chip integrated circuits are available. We analyze the S-parameters and radiation patterns of a reference antenna in detail, comparing simulation results with experimental measurements to ensure accuracy. Acknowledging the challenges posed by mmWave patch antennas, we propose a straightforward method to enhance peak gain while preserving the capabilities of the commercial patch structure. Specifically, by twinning one of the input port signals using a power divider, we increase the number of elements in the array without altering the number of input ports. Our findings suggest that this technique can increase the peak gain by 1.3 dB and narrow the beam by 4°, resulting in practical benefits such as enhanced target detection range and accuracy in radar applications while mostly preserving the functioning of the system. © 2025 Elsevier B.V., All rights reserved.Article Citation - WoS: 2Citation - Scopus: 2Crown Shaped Edge Multiband Antenna Design for 5G and X-Band Applications(Springer, 2023) Hakanoglu, Baris Gurcan; Kilic, Veli Tayfun; Altindis, Fatih; Turkmen, MustafaNowadays we are experiencing the fifth-generation (5G) technology with new frequency bands to achieve high broadband speed, minimum latency and more developed end user devices. Due to the different frequency ranges for different applications at 5G bands the antennas should support multiband operation in a compact structure. This paper proposes a new multiband microstrip patch antenna design operating at mid band 5G frequencies and in the X band. The structure of the antenna includes simply loading the top radiating edge with rhombic shaped stubs and slots. This configuration yields the antenna to have resonances at multiple frequencies based on the fact that the stubs and slots affect capacitive and inductive impedances on the lower and higher operating frequencies of the antenna. The unique design enables the antenna to have reasonably high gains at four different bands of 6.76 dBi, 6.47 dBi, 7.76 dBi and 5.51 dBi at 3.34 GHz, 4.61 GHz, 6.01 and 8.02 GHz, respectively. Also, the simulated antenna has been manufactured and measured. The measurement results are in good agreement with the simulation results. The proposed design can be used with many other frequency bands and dielectric materials as well to achieve multiband operation.Conference Object Design of a Portable DF System With Simple and Compact Structure Operating at 875 MHZ GSM Band(Institute of Electrical and Electronics Engineers Inc., 2021) Uludag, Mert; Ozoksuzkaya, Ali; Kiliç, Veli TayfunThis paper reports a portable GSM direction finding system operating at 875 MHz frequency band with simple and compact structure. In the system, array of receiver antennas are placed together with other RF components including amplifiers, power dividers, phase comparators, an analog to digital converter and a processor unit. With help of the developed algorithm phase comparison between the receiver antenna channels is obtained and angle estimation is done. The developed algorithm was first run on a constructed system test setup that involves a digital oscilloscope connected to the receiver antennas in a laboratory environment. Later, the digital oscilloscope in the test setup was replaced with the RF components mentioned above such that a portable receiver system with compact structure was obtained. Direction finding experiments were repeated with the designed portable receiver system in the laboratory and in open space. Results show that with the designed system angle of a transmitter is found very accurately such that the maximum angle error between the estimated and the exact angle values of the transmitter antenna was found to be equal to 3.5° in the open space experiments for the transmitter antenna positioned at an angle between -60° and 60° on the horizontal plane same with the receiver antennas. Also, it is observed that the difference between the estimated and the exact angle values has an increasing trend with the exact angle absolute value. The findings indicate that the designed portable direction finding system is promising to be used for applications requiring accurate angle estimation of GSM signals. © 2022 Elsevier B.V., All rights reserved.Conference Object Citation - WoS: 3Citation - Scopus: 5Single and Double Side Comb-Shaped Patch Antenna Design Evolved From Rectangular Shape for Reduced Sized Antenna Applications(IEEE, 2020) Baydar, Huseyin; Aslan, Melih; Kilic, Veli TayfunThis paper reports single and double side comb-shaped patch antennas to be used in reduced-sized antenna applications. The proposed antenna designs are evolved from regular rectangular shape antennas. The designed single and double side comb-shaped antennas were investigated in a complete set of study together with the rectangular shape antenna that resonates at 5 GHz frequency. Reflection coefficient (S-11) parameter of the designed comb-shaped antennas and the rectangular antenna were calculated together with three-dimensional (3D) directivity patterns in simulations for different arm lengths, arm widths, and arm numbers of the comb-shaped antennas. Results show that with the comb-shaped antennas it is possible to shift the resonance frequency of a regular rectangular shape antenna to a frequency lower than its half without enlarging the foot-print area or with the smaller foot-print area. Also, resonance frequency change and peak directivity variations at resonance frequencies of the antennas with geometrical parameters of the antennas were calculated, too. The findings indicate that due to the large number of geometrical parameters that come with the nature of the comb shape, comb-shaped antennas provide more flexibility while constructing an antenna.Conference Object Comb-Shaped Patch Antenna Design Study With Shifted Arms and Asymmetric Architecture Enabling Controlled Resonance Change and Radiation Pattern(IEEE, 2022) Asian, Melih; Baydar, Huseyin; Kilic, Veli Tayfun; Aslan, MelihThis paper reports comb-shaped patch antennas with asymmetrical geometries having two and three arms on the sides. The proposed geometry is evolved from regular rectangular shaped patch antenna by removing certain parts of the radiator patch and shifting the arms on one side of the antenna. Systematic simulations were obtained with the designed antennas for different arm shifting distances, and changes in resonance behavior and far-field radiation pattern were investigated. Results show that as the arm shifting increases the first and second resonance frequencies of the antennas decrease. Also, it is observed that the radiation occurs with two symmetric beams at the second resonance frequency of the designed antennas with no shift between the arms. However, as the arm shifting is applied the beam on the side of the arms closer to the feeding line gets stronger, whereas the other beam weakens. Obtained plots indicate that the directivity of the antennas have a tendency to increase with the arm shifting while the side lobe level decreases. In addition, results show that the half power beam width of the antenna increases with arm shifting. The simulations were repeated for different arm thicknesses and the same observations were held.Conference Object Citation - WoS: 2Citation - Scopus: 4Magnetic Field Calculation of Square Coils Having Rounded Corners(Institute of Electrical and Electronics Engineers Inc., 2019) Erman, Muhammed Furkan; Kiliç, Veli TayfunThere are differently shaped coils for induction heating used in industry such as circular, and square coils. While producing square-like shaped coils, it is unavoidable to face production difficulties due to the sharp corners. At the end of the production, instead of square-like shape, edges are flat and corners are rounded shape coil which is called squircle coil is produced. This paper will discuss how these rounded corners effect the magnetic field at the center of the coil by deriving missed formulas in the literature, and prove the results by comparing with the results of generally known formulas. © 2020 Elsevier B.V., All rights reserved.Article Bandwidth Optimization of an Ultra Wide Band Vivaldi Antenna Design with Its Feed Alignment(2025) Kilic, Veli Tayfun; Güzelkara, IzzetTıbbi görüntüleme, gözetleme veya iç mekan lokalizasyonu gibi ultra geniş bant uygulamaları farklı bant genişlikleri gerektirir. Farklı bant genişliği gereksinimleri genellikle anten tasarımı açısından zorluk teşkil etmektedir. Bu çalışmada ultra geniş bant sistemlerine uygun geniş bantlı bir Vivaldi anten sunulmaktadır. Anten, 3 boyutlu bir elektromanyetik simülasyon aracı kullanılarak tasarlanmış ve optimize edilmiştir. Daha sonra mikroşerit beslemenin anten bant genişliği üzerindeki etkisinin araştırıldığı parametrik bir çalışma yapılmıştır. Antenin bant genişliğinin, başka herhangi bir anten parametresini değiştirmeye gerek kalmadan, mikroşerit beslemenin toplam uzunluğu ve konumu değiştirilerek değiştirilebileceği gösterilmiştir.Article Citation - WoS: 17Citation - Scopus: 19High-Efficiency Flow-Through Induction Heating(Wiley, 2020) Kilic, Veli Tayfun; Unal, Emre; Demir, Hilmi VolkanThis study reports a newly designed induction heating system for efficient, fast, and safe flow-through heating. The system has a very simple architecture, which is composed of a transmitting coil, an isolating plastic pipe, and an embedded metal shell. Wireless energy transfer from the external coil to the internal metal shell through the pipe is essential for decreasing losses. Also, a large contact surface between a fluid and the immersed shell enables rapid heat transfer. The proposed heating system was systematically investigated for different shell geometries and the results were compared with a commercially available conductive flow-through heating device. As a proof-of-concept demonstration, a prototype of the designed induction heating system was manufactured and the heating measurements were conducted with water. Power transfer efficiency of the prototyped induction heating system was measured to be 97%. The comparative study indicates that such high-efficiency induction flow-through heating system offers a great potential for replacing the conventional conductive heating device used in household applications in which the rapid and compact heating is desired.Article Semi Analytical Study and Calculation of Magnetic Flux Density Created by Rectangularly Shaped Planar Coils With Rounded Corners(Springer int Publ Ag, 2025) Kilic, Veli Tayfun; Kavuncu, UmutIn this paper, magnetic flux density induced by a rectangularly shaped single-turn planar coil with rounded corners is investigated. Starting from Biot-Savart law analytical derivations are obtained and contributions of straight edges and rounded corners of a coil to a flux density at a point in a three-dimensional space are formulated. In the derived formula the magnetic flux density generated by a coil with rounded corners is expressed as a function of the coil's geometrical parameters including start and end points of the roundings together with the center of the circles that contain arcs at the corners and observation point coordinates. Magnetic flux density distribution of rectangular coils with different sizes and roundings at the corners were calculated on distinct planes by using the derived formula. Also, FEM based electromagnetic simulations and measurements were done for the same coils. The results obtained in the analytical calculations, FEM calculations and measurements are in a good agreement.Master Thesis İndüksiyon Sistemi Uygulamaları için Farklı Düzlemsel Bobin Şekillerinin Teorik Olarak İncelenmesi ve Modellenmesi(Abdullah Gül Üniversitesi, 2019) ERMAN, MUHAMMED FURKAN; Erman, Muhammed Furkan; Kılıç, Veli TayfunIsıtma endüstride önemli bir yer kaplar. Teknolojinin gelişmesiyle birlikte, günümüz dünyasında, resistif ve kızılötesi ile ısıtma yöntemleri de dahil olmak üzere yaygın olarak kullanılan birçok ısıtma yöntemi vardır. Bu yöntemler arasında, indüktif ısıtma giderek daha popüler hale gelmektedir. İndüktif ısıtma sistemlerinin en önemli parçalarından biri bobindir. Bobin, elektrik enerjisi uygulandığında ve üzerinden akım geçtiğinde manyetik alan oluşturur. Endüstride dairesel, kare vb. şekillerde farklı bobin şekillerini görmek mümkündür. Literatürde mevcut formüller kullanılarak bu bobin şekillerinin analitik incelenmesi yapılabilmektedir. Ancak üretim zorluklarından veya sağladığı avantajlardan dolayı kare bobin gibi köşeleri keskin olan bobinlerin köşelerinin yuvarlanması kaçınılmazdır. Köşeleri yuvarlanmış bobin yapısı orijinal yapısından farklı olduğundan dolayı oluşturduğu manyetik akı yoğunluğu aynı olmamaktadır. Bu tezde, bu tür bobinlerin analitik olarak incelenebilmesi için gerekli formüllerin türetilmesi ile literatürdeki boşluk doldurulmuştur. Bulunan formüller köşeleri yuvarlanmış kare ve üçgen şeklindeki bobinlerin oluşturduğu manyetik akı yoğunluğu hesaplanarak doğrulanmıştır. Her iki bobin şekli modellenerek simule edilmiştir. Her bir şekil için 3 farklı boyut ve her boyut için 5 farklı yuvarlama miktarı seçilmiştir. İlk durumda, yuvarlanan köşe merkezlerinin bobinin merkezi ile çakıştığı varsayılmıştır. Bu sayede bobin merkezinde oluşan manyetik akı yoğunluğu hem geleneksel formüller ile hem de bu tezde türetilen formüller ile hesaplanmıştır. İkinci durumda ise yaylar, merkezleri bobin merkeziyle çakışmayacak şekilde farklı konumlara yerleştirilmiş çemberin parçaları olarak ayarlanmıştır. İkinci durumda, yuvarlamanın yaratılan manyetik alan yoğunluğu üzerindeki etkisini görmek için farklı miktarlarda yuvarlama için bobinin ix toplam uzunluğu sabit tutulmuştur. Bu durumda hesaplamalar sadece bu çalışmada türetilen formüller ile yapılabilmektedir. Manyetik akı yoğunluklarının hesaplanmasından sonra, sonuçlar üç boyutlu elektromanyetik simülasyonlarla desteklenmiştir. Bulunan sonuçların analitik hesaplamalar ve simülasyonlarla karşılaştırılması, önerilen yöntem ile geleneksel yöntem arasındaki ve önerilen yöntem ile simülasyonlar arasındaki maksimum hatanın % 1'den az olduğunu göstermiştir.
- «
- 1 (current)
- 2
- 3
- »