Makale Koleksiyonu by İSTE Author "Alkurt, Fatih Özkan"
Now showing items 1-20 of 35
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Antenna-based microwave absorber for imaging in the frequencies of 1.8, 2.45, and 5.8 GHz
Alkurt, Fatih Özkan; Altıntaş, Olcay; Atcı, Ahmet; Bakır, Mehmet; Ünal, Emin; Akgöl, Oğuzhan; Delihacıoğlu, Kemal; Karaaslan, Muharrem; Sabah, Cumali (The International Society for Optics and Photonics (SPIE), 2018)We propose a microwave imaging structure with GSM, ISM, Wi-Fi, and WiMAX operating frequencies at 1.80, 2.45, and 5.80 GHz, respectively. The suggested structure is based on a microwave antenna-inspired absorber with ... -
Characterization of tunable electromagnetic band gap material with disordered cavity resonator for X band imaging applications by resistive devices
Alkurt, Fatih Özkan; Karaaslan, Muharrem (Springer, 2019)Electromagnetic band gap (EBG) integrated monopole antenna is investigated in deformed cavity resonator in this study. The operation frequency is chosen as X band frequency regime and designs are completed for this frequency. ... -
The Detection of Chemical Materials with a Metamaterial-Based Sensor Incorporating Oval Wing Resonators
Abdulkarim, Yadgar I.; Deng, Lianwen; Karaaslan, Muharrem; Dalgaç, Şekip; Mahmud, Rashad Hassan; Alkurt, Fatih Özkan; Muhammadsharif, Fahmi F.; Awl, Halgurd N.; Huang, Shengxiang; Luo, Heng (MDPI, 2020)The detection of branded and unbranded chemical materials is essential for the quality control assessment. In this work, a metamaterial inspired sensor is designed and fabricated, which incorporates oval-shaped wing ... -
Determination of frying sunflower oil usage time for local potato samples by using microwave transmission line based sensors
Erdoğan, Maide; Ünal, Emin; Alkurt, Fatih Özkan; Abdulkarim, Yadgar, I.; Deng, Lianwen; Karaaslan, Muharrem (Elsevier, 2020)Amount of oil usage time can be determined by microwave measurements instead of using complex laboratory equipments to measure oil parameters such as viscosity, base number, refractive index, acid numbers, density, water ... -
Electromagnetic Analysis of Organic Waste and Blust Furnace Slag Mixtures
Baltacıoğlu, Mustafa; Başar, Mustafa Tunahan; Karaaslan, Muharrem; Alkurt, Fatih Özkan; Arıpek, Samet Alparslan (European Mechanical Science, 2021)In this experimental study, a composite structure was obtained by combining apple pulp wastes with slag wastes. Electromagnetic field characteristics of test samples have been determined. In the scope of the study, dry ... -
Enhancement of image quality by using metamaterial inspired energy harvester
Alkurt, Fatih Özkan; Altıntaş, Olcay; Özaktürk, Melikşah; Karaaslan, Muharrem; Akgöl, Oğuzhan; Ünal, Emin; Sabah, Cumali (Elsevier, 2020)Metamaterial energy harvester based subwavelength imaging structure is presented. Besides, 2x2 array patch antenna is designed to create incident radiated signal towards the proposed harvester structure. Harvested energy ... -
Farklı Konfigürasyonlarda Çelik Metamalzemeler Kullanarak Sismik Etkilerin Azaltılması
Kaçın, Selçuk; Sevim, Umur Korkut; Öztürk, Murat; Karaaslan, Muharrem; Demirci, Mustafa; Akgöl, Oğuzhan; ünal, Emin; Özer, Zafer; Başar, Mustafa Tunahan; Alkurt, Maide Erdoğan; Alkurt, Fatih Özkan; Mert, Bayram Ali; Kaya, Şeyda (Türk deprem araştırma dergisi (Online), 2021)Depremlerin yıkıcı etkilerini azaltmak için yapılan çalışmalar, son zamanlarda üzerinde durulan araştırma konuları arasındadır. Bu çalışmada, kare, üçgen, sinüs ve daire olmak üzere dört farklı saha dizisinde çelik met ... -
Ground plane design configuration estimation of 4.9 GHz reconfigurable monopole antenna for desired radiation features using artificial neural network
Alkurt, Fatih Özkan; Özdemir, Merve Erkınay; Akgöl, Oğuzhan; Karaaslan, Muharrem (Wiley, 2021)This paper presents a system based on artificial neural network (ANN) that predicts ground plane design for desired radiation properties of a monopole antenna with operation band of 4.8 to 5 GHz. The operating frequency ... -
Highly sensitive metamaterial-based microwave sensor for the application of milk and dairy products
Abdulkarim, Yadgar I.; Bakır, Mehmet; Yaşar, İbrahim; Ulutaş, Hasan; Karaaslan, Muharrem; Alkurt, Fatih Özkan; Sabah, Cumali; Dong, Jian (Optica Publishing Group (formerly OSA), 2022)In this work, a novel, to the best of our knowledge, metamaterial-based microwave sensor is designed, numerically simulated, and experimentally tested for milk and dairy products in the frequency range of 8 to 9 GHz. The ... -
Investigation of microwave power limiter for Industrial Scientific Medical band (ISM) applications
Sardi, Azzeddine; Alkurt, Fatih Özkan; Özkaner, Vedat; Karaaslan, Muharrem; Ünal, Emin; Mohamed, Taouzari (Wiley, 2020)In this paper, a new design of microstrip power limiter which is based on microstrip technology and zero bias Schottky diode is introduced. In this context, the FR-4 substrate that was characterized by dielectric permittivity ... -
Metamaterial-based energy harvesting for GSM and satellite communication frequency bands
Bakır, Mehmet; Karaaslan, Muharrem; Karadağ, Faruk; Ünal, Emin; Akgöl, Oğuzhan; Alkurt, Fatih Özkan; Sabah, Cumali (SPIE - Society of Photo-Optical Instrumentation Engineers, 2018)A metamaterial-based energy harvesting structure has been designed and experimentally tested in this study. The proposed structure has square and split ring resonators placed in different angles on the back and front sides ... -
Microfluidic and Fuel Adulteration Sensing by Using Chiral Metamaterial Sensor
Bakır, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Karadağ, Faruk; Alkurt, Fatih Özkan; Altıntaş, Olcay; Dalgaç, Şekip; Sabah, Cumali (The Electrochemical Society, 2018)In this study, Chiral Metamaterial Sensor (CMS), which is designed by utilizing a Split Ring Resonators (SRR) has been employed to reveal the two different types of sensor applications by experimentally and numerically. ... -
Microwave Imager Design with 2.46 GHz Microstrip Patch Antennas
Alkurt, Fatih Özkan; Karaaslan, Muharrem; Ünal, Emin; Karadağ, Faruk (Adıyaman Üniversitesi Fen Bilimleri Dergisi, 2019)In this study, microwave imager design is aimed by using a series of microstrip patch antennas operating in the 2.46 GHz frequency band. The designed microwave imager has a 24-sided cylindrical shape and includes 5x1 ... -
Microwave power imaging detector based on metamaterial absorber
Alkurt, Fatih Özkan; Altıntaş, Olcay; Bakır, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Karadağ, Faruk; Akgöl, Oğuzhan; Sabah, Cumali (SPIE, 2020)Our paper presents the design, fabrication, and characterization of metamaterial absorber-based microwave imaging detector that is operating in industrial, scientific, and medical (ISM) band. The results reveal that the ... -
Monopole antenna integrated cavity resonator for microwave imaging
Alkurt, Fatih Özkan; Karaaslan, Muharrem; Furat, Murat; Ünal, Emin; Akgöl, Oğuzhan (SPIE, 2021)We present a system that displays an image of any metal structure in a scene by the use of microwave radiation from a cavity resonator in a 10-GHz frequency band. An 80 mm x 80 mm mushroom-like electromagnetic band gap ... -
Mutual Coupling Reduction of Cross-Dipole Antenna for Base Stations by Using a Neural Network Approach
Özdemir, Ersin; Akgöl, Oğuzhan; Alkurt, Fatih Özkan; Karaaslan, Muharrem; Abdulkarim, Yadgar I.; Deng, Lianwen (Mdpi, 2020)In this manuscript, a resonator layer is presented for the purpose of reducing the mutual coupling effect between each antenna element of a cross dipole antenna. In design processes, an artificial neural network approach ... -
Octagonal Shaped Metamaterial Absorber Based Energy Harvester
Alkurt, Fatih Özkan; Altıntaş, Olcay; Bakır, Mehmet; Tamer, Ahmet; Karadağ, Faruk; Bağmancı, Mehmet; Karaaslan, Muharrem; Ünal, Emin; Akgöl, Oğuzhan (Kaunas University of Technology, 2018)In this study, a novel octagonal shaped metamaterial based broadband absorber is proposed for energy harvesting at WIMAX wireless communication band. The proposal has an absorption of 99.97 % at 5.5 GHz with a bandwidth ... -
Pattern reconfigurable metasurface to improve characteristics of low profile antenna parameters
Alkurt, Fatih Özkan; Karaaslan, Muharrem (Wiley, 2019)This article proposes a mushroom-shaped electromagnetic band gap (EBG) structure for the antenna parameter enhancement of low profile antennas in 5 to 15 GHz regime. Three different type antennas including a dipole antenna, ... -
A polarization-insensitive triple-band perfect metamaterial absorber incorporating ZnSe for terahertz sensing
Abdulkarim, Yadgar I.; Alkurt, Fatih Özkan; Bakır, Mehmet; Awl, Halgurd N.; Muhammadsharif, Fahmi F.; Karaaslan, Muharrem; Appasani, Bhargav; Al-Badri, Khalid Saeed Lateef; Zhu, Yuanyuan; Dong, Jian (Institute of Physics, 2022)In this work, a triple-band polarization-insensitive metamaterial structure with perfect absorption is proposed by incorporating a zinc selenide (ZnSe) spacer. The structure was optimally designed by varying the type of ... -
Radar Absorber Fabric Design Based on Periodic Arrays of Circular Shaped Conductive Patches
Nişancı, Muhammet Hilmi; Kanberoğlu, Baha; Alkurt, Fatih Özkan; Karaaslan, Muharrem (Celal Bayar University, 2022)In this study, the design and electrical tests of radar absorber fabric containing an array of circular shaped conductive patches positioned on a neoprene fabric are presented.In the designs, electrical performance of the ...
