• Microwave-Based Electrochemical Sensor Design by SRR Approach for ISM Sensing Applications 

  Özkaner, Vedat; Paul, Liton Chandra; Karaaslan, Muharrem; Akdoǧan, Volkan (Hindawi Limited, 2022)

  This paper presents a transmission line and a split ring resonator (SRR) based sensor structure with a high sensitivity capacity to discriminate various methanol mixtures. The height of the dielectric layer and thickness ...

• A study on electronically controllable beamforming monopole antenna for telecommunication applications 

  Alkurt, Fatih Özkan; Ünal, Emin; Palandöken, Merih; Altıntarla, Gizem; Abdulkarim, Yadgar I.; Hasar, Uğur Cem; Karaaslan, Muharrem (Taylor and Francis, 2022)

  The design, analysis, and prototyping of an electronically controllable beamforming monopole antenna (ECBMA), which could be a good candidate for ceil-mounted wireless telecommunication systems, are reported. The proposed ...

• 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 ...

• GSM ve ISM Bandı RF Enerji Hasatlama Sistemleri için Tek Katlı Doğrultucu Devre Tasarımı 

  Belen, Aysu; Belen, Mehmet Ali (Mühendislik Bilimleri ve Tasarım Dergisi, 2021)

  Kablosuz haberleşme sistemlerinin yaygınlaşmasıyla ortamlarda pek çok frekansta sinyaller bulunmaktadır. Ortamda bulunan mevcut sinyallerin enerji kaynağı olarak dönüştürülmesini hedefleyen sistemler enerji hasatlama ...

• Nesnelerin İnterneti (Iot) Uygulamaları İçin Polarizasyondan Bağımsız Metamalzeme Emici Tabanlı Enerji Hasatlama 

  Dokumacı, Ayşe İncesu; Özkaner, Vedat; Karaaslan, Muharrem (Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 2022)

  Bu çalışmada Nesnelerin İnterneti (IoT) için metamalzeme emici tabanlı enerji hasatlayıcı önerilmiştir. Önerilen metamalzeme yapının ön yüzeyi bakır rezonatör ile dielektrik malzemeden ve arka yüzey de tamamen bakırdan ...

• 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 ...

• Multilayered metamaterials array antenna based on artificial magnetic conductor's structure for the application diagnostic breast cancer detection with microwave imaging 

  Zerrad, Fatima-ezzahra; Taouzari, Mohamed; Makroum, El Mostafa; El aoufi, Jamal; Islam, Mohammad Tarikul; Özkaner, Vedat; Abdulkarim, Yadgar I.; Karaaslan, Muharrem (Elsevier, 2022)

  In this work, a small multilayer ultra-wideband (UWB) patch antenna for microwave breast imaging (MWI) applications was developed both theoretically and experimentally. However, to improve the antenna performance relating ...

• Modüler çok seviyeli dönüştürücüler için genelleştirilmiş bir kapasitör gerilim dengeleme şeması ve örnekleme frekansı analizi 

  Kurtoğlu, Mehmet; Eroğlu, Fatih; Vural, Ahmet Mete (Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 2022)

  Modüler çok seviyeli dönüştürücüler (MÇD), modüler yapısı ve kaliteli çıkış dalga formu sayesinde endüstriyel uygulamalarda sıklıkla kullanılmaktadırlar. En yakın seviye modülasyon (ESM) yöntemi MÇD uygulamalarında tercih ...

• Sinusoidally located concrete metastructures for attenuation of seismic surface vibrations 

  Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Karaaslan, Muharrem; Akgöl, Oğuzhan; Özer, Zafer; Demirci, Mustafa; Ünal, Emin; Mert, Bayram Ali; Alkurt, Maide Erdoğan; Alkurt, Fatih Özkan; Başar, Mustafa Tunahan; Kaya, Şeyda Gülsüm (Springer, 2022)

  In this numerical and experimental study, we designed sinusoidal located concrete-based boreholes which are candidate for seismic shielding applications. To attenuate seismic wave transmission in an area, proposed design ...

• Tree-shaped fractal metamaterial multiband absorber for C- and X-band applications 

  Abbas, Muhammad Basir; Baqir, Muhammad Abuzar; Altıntaş, Olcay; Karaaslan, Muharrem; Abbas, Musarat (Taylor and Francis Ltd., 2022)

  Recently, multiband metamaterial absorbers have gained considerable attention from research and development communities due to their applications in filtering, stealth, and sensing. However, these multiband absorbers are ...

• 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 ...

• Low-Cost Antenna-Array-Based Metamaterials for Non-Invasive Early-Stage Breast Tumor Detection in the Human Body 

  Hamza, Musa N.; Abdulkarim, Yadgar I.; Saeed, Salah Raza; Altıntaş, Olcay; Mahmud, Rashad H.; Appasani, Bhargav; Ravariu, Cristian (MDPI, 2022)

  Microstrip patch antennas have been used in many applications since their appearance. Despite their great promise, their narrow bandwidth and the loss at high-frequency bands have limited their usage in medical applications. ...

• Radiation pattern reconfigurable cubical antenna array for 2.45 GHz wireless communication applications 

  Alkurt, Fatih Özkan; Ünal, Emin; Palandöken, Merih; Abdulkarim, Yadgar I.; Hasar, Uğur Cem; Karaaslan, Muharrem (Springer, 2022)

  In this paper a single-fed four-faced multidirectional compact antenna is introduced for 2.45 GHz indoor wireless applications. Firstly, a slotted patch antenna is designed to operate at 2.45 GHz and its equivalent circuit ...

• Risk assessment of renewable energy and multi-carrier energy storage integrated distribution systems 

  Tuncel, Süleyman; Oskouei, Morteza Zare; Şeker, Ayşe Aybike; Gözel, Tuba; Hocaoğlu, Mehmet Hakan; Abapour, Mehdi; Mohammadi-Ivatloo, Behnam (Wiley, 2022)

  High-power renewable energy sources (RESs) are recognized as a significant trend for the development of power distribution systems in an eco-friendly manner. Due to the aging of distribution system infrastructure, many ...

• Investigation of structural, magnetic and microwave absorption properties of NixCo1-xFe2O4/Ni:ZnO (x:0.0, 0.5, and 1.0) embedded epoxy composites 

  Kıvrak, Burak; Tümen, Kutluhan Utku; Karaaslan, Muharrem; Akyol, Mustafa (Springer, 2022)

  In this study, NixCo1−xFe2O4/Ni:ZnO (x:0.0, 0.5, and 1.0) epoxy-based composite structures were manufactured by sol–gel method. The structural, morphological and magnetic characteristics were investigated using X-ray ...

• Fractal metamaterial based multiband absorber operating in 5G regime 

  Baqir, Muhammad Abuzar; Latif, H.; Altıntaş, Olcay; Akhtar, Majid Niaz; Karaaslan, Muharrem; Server, H.; Hameed, Musab; Idrees, Nazar Muhammad (Elsevier, 2022)

  Multiband absorption is the interest of the microwave communities due to several applications in sensing, filtering, and stealth. Usually, the stacking of metal and dielectric multilayered structures form a multiband ...

• Enhanced Sensing Capacity of Terahertz Triple-Band Metamaterials Absorber Based on Pythagorean Fractal Geometry 

  Mazare, Alin Gheorghita; Abdulkarim, Yadgar I.; Karim, Ayoub Sabir; Bakır, Mehmet; Taouzari, Mohamed; Muhammadsharif, Fahmi F.; Appasani, Bhargav; Altıntaş, Olcay; Karaaslan, Muharrem; Bizon, Nicu (MDPI, 2022)

  A new design of a triple band perfect metamaterial absorber based on Pythagorean fractal geometry is proposed and analyzed for terahertz sensing applications. The proposed design showed an enhanced sensing performance and ...

• Mechanisms of nonlinear optical absorption in (GeO2)1-x–(PbF2)x (0.1 ≤ x ≤ 0.3) modified germanate glasses 

  Ünlü, Bekir Asilcan; Bilir, Gökhan; Yüksek, Mustafa; Karatay, Ahmet; Yıldız, Elif Akhüseyin; Elmalı, Ayhan (Elsevier, 2022)

  The structural, optical, and nonlinear absorption properties of (GeO2)1-x–(PbF2)x (0.1 ≤ x ≤ 0.3) glasses synthesized by conventional melting and quenching technique were investigated. Bandgap energies and Urbach energies ...

• A vanadium dioxide-based metamaterial with quatrefoil and circle loaded structure on flexible polyamide substrate for terahertz applications 

  Abdulkarim, Yadgar I.; Awl, Halgurd N.; Muhammadsharif, Fahmi F.; Bakır, Mehmet; Alkurt, Fatih Özkan; Altıntaş, Olcay; Saeed, Salah Raza; Taouzari, Mohamed; Karaaslan, Muharrem; Appasani, Bhargav; Dong, Jian (Frontiers Media S.A., 2022)

  In this study, a novel broadband metamaterial (MTM) absorber is proposed, which is based on vanadium dioxide (VO2) resonators coated onto a flexible polyamide substrate. The VO2 resonator is in the form of a quatrefoil and ...

• Nonlinear optical performance and optical limiting of germanate glasses modified with PbF2 and B2O3 induced by nanosecond pulsed laser 

  Pepe, Yasemin; Bilir, Gökhan; Yüksek, Mustafa; Karatay, Ahmet; Yıldız, Elif Akhüseyin; Elmalı, Ayhan (Elsevier, 2022)

  In this work, GeO2 modified with PbF2 and B2O3 glasses were synthesized by conventional melting and quenching technique to investigate the effect of modifier network on its linear and nonlinear optical properties. Linear ...

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