Department of Electrical and Electronics Engineering, Article

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Recent Submissions

Label-free enrichment of MCF7 breast cancer cells from leukocytes using continuous flow dielectrophoresis
Arslan, Zeynep Caglayan; Yalcin, Yagmur Demircan; Külah, Haluk (2022-04-01)
Circulating tumor cells (CTCs) present in the bloodstream are strongly linked to the invasive behavior of cancer; therefore, their detection holds great significance for monitoring disease progression. Currently available ...
A novel surface-integral-equation formulation for efficient and accurate electromagnetic analysis of near-zero-index structures
İbili, Hande; Ozmu, Utku; Karaosmanoglu, Bariscan; Ergül, Özgür Salih (2022-03-01)
We consider accurate and iteratively efficient solutions of electromagnetic problems involving homogenized near-zero-index (NZI) bodies using surface-integral-equation formulations in the frequency domain. NZI structures c...
Signaling Games for Log-Concave Distributions: Number of Bins and Properties of Equilibria
Kazikli, Ertan; Sarıtaş, Serkan; GEZİCİ, Sinan; Linder, Tamas; Yuksel, Serdar (2022-03-01)
We investigate the equilibrium behavior for the decentralized cheap talk problem for real random variables and quadratic cost criteria in which an encoder and a decoder have misaligned objective functions. In prior work, i...
A novel miniaturized X-band coplanar waveguide branch-line coupler using T- and 𝜋�-type equivalent transmission lines
Arican, Galip Orkun; Sen, Ozlem; Sayan, Gönül (2022-03-01)
This article reports a novel compact branch-line coupler (BLC) in coplanar waveguide technology for X-band monolithic microwave integrated circuit (MMIC) applications. This article consists of theoretical basis, design, an...
Coriolis Vibratory MEMS Gyro Drive Axis Control with Proxy-Based Sliding Mode Controller
Ozturk, Derya Unsal; Erkmen, Aydan Müşerref (2022-03-01)
MEMS (micro electrical mechanical systems) gyroscopes are used to measure the angular rate in several applications. The performance of a MEMS gyroscope is dependent on more than one factor, such as mechanical imperfections...
Dual-band InGaAs nBn photodetectors at 2 mu m
Şahin, Alper; Gül, Musa Selim; Uzgur, Fatih; Kocaman, Serdar (2022-02-01)
An nBn type InGaAs photodetector structure operating at 2 mu m with dual-band operation capability has been numerically designed and experimentally characterized. A compositionally graded and unintentionally doped InGaAlAs...
Design, Modeling, and Control Allocation of a Heavy-Lift Aerial Vehicle Consisting of Large Fixed Rotors and Small Tiltrotors
Ozdogan, Gokhan; Leblebicioğlu, Mehmet Kemal (2022-02-01)
In this article, we propose an unconventional heavy-lift aerial vehicle (HLAV), present the design and its control allocation analysis, and prove the concept by the demonstration of the experimental test prototype in the o...
Sensitivity Analysis for the Inductance Gradient of EMFY-3 Electromagnetic Launcher
Tosun, Nail; Civil, Anil; Oruc, Ahmet Yasin; Yildirim, Baran; Ozceylan, Bekir Mert; Bolat, Bora; Yurdakul, Emre Burak; Tan, Evren; Yurdakonar, Ferhat; Akdemir, Huseyin; Gungen, Ibrahim; Onur, Ibrahim; Karagoz, Mustafa; Cavbozar, Ozgur; Demirkol, Rasih Hakan; Gocmen, Ulas; Keysan, Ozan (2022-01-01)
ASELSAN Inc. has been working on electromagnetic launch technologies since 2014. The first prototype, EMFY-1, has a 25 mm x 25 mm square bore and 3-m-length rails. The second prototype, EMFY-2, has a 50 x 50 mm square bore...
Perturbation-Asymptotic Series Approach for an Electromagnetic Wave Problem in an Epsilon Near Zero (ENZ) Material
Akkaya, Murat Koray; YILMAZ, ASIM EGEMEN; Kuzuoğlu, Mustafa (2022-01-01)
Electromagnetic waves present very interesting features while the permittivity of the environment approaches to zero. This property known as ENZ (Epsilon Near Zero) has been analysed with the perturbation approach-asymptot...
Determining allowable parametric uncertainty in an uncommon quadrotor model for closed loop stability
Baskin, Mehmet; Leblebicioğlu, Mehmet Kemal (2022-01-01)
In this article, control oriented uncertainty modeling of an uncommon quadrotor in hover is discussed. This quadrotor consists of two counter-rotating big rotors on longitudinal axis and two counter-rotating small tilt rot...
Broadband Analysis of Multiscale Electromagnetic Problems: Novel Incomplete-Leaf MLFMA for Potential Integral Equations
Khalichi, Bahram; Ergül, Özgür Salih; Takrimi, Manouchehr; Erturk, Vakur B. (2021-12-01)
Recently introduced incomplete tree structures for the magnetic-field integral equation are modified and used in conjunction with the mixed-form multilevel fast multipole algorithm (MLFMA) to employ a novel broadband incom...
SNR and total acquisition time analysis of multi-echo FLASH pulse sequence for current density imaging
Sadighi, Mehdi; Şişman, Mert; Eyüboğlu, Behçet Murat (2021-12-01)
Magnetic Resonance Current Density Imaging (MRCDI) is an imaging modality providing cross-sectionalcurrent densityðJ Þinformation inside the body. The clinical applicability of MRCDI is highly dependenton the sensitivity o...
A partitioning strategy for improved state estimation performance in ill-conditioned power systems with hybrid measurement set
Yildiz, Tuna; Açılan, Etki; Göl, Murat (2021-12-01)
Considering the increase in power system size and the number of PMUs, the utilization of a computationally efficient yet accurate static state estimator is crucial. The fast-decoupled WLS estimator (FD-WLS) is the most com...
Centralized Microgrid Control System in Compliance with IEEE 2030.7 Standard Based on an Advanced Field Unit
Pouraltafi-kheljan, Soheil; Ugur, Mesut; Bozulu, Efecan; Caliskan, Bahadir Can; Keysan, Ozan; Göl, Murat (2021-11-01)
The necessity for the utilization of microgrids emerges from the integration of distributed energy resources, electric vehicles, and battery storage systems into the conventional grid structure. In order to achieve a prope...
An Efficient QAM Detector via Nonlinear Post-Distortion Based on FDE Bank Under PA Impairments
Salman, Murat Babek; Güvensen, Gökhan Muzaffer (2021-10-01)
In this paper, we propose a receiver structure for single-carrier uplink transmission with frequency domain equalization (FDE) that is exposed to power amplifier (PA) nonlinearities. A two-stage approach is adopted, in whi...
Dual Band, Miniaturized Permittivity Measurement Sensor With Negative-Order SIW Resonator
Mohammadi, Pejman; Teimouri, Hadi; Mohammadi, Ali; Demir, Şimşek; KARA, ALİ (2021-10-01)
A novel dual band, highly sensitive Substrate Integrated Waveguide (SIW) sensor for permittivity measurements is presented. A pair of modified Complementary Split Ring Resonators (CSRRs) is etched on SIW surface. CSRRs are...
A Bound Based Method for Beamformer Design in Downlink Cloud Radio Access Networks
Kadan, Fehmi Emre; Yılmaz, Ali Özgür (2021-10-01)
Cloud Radio Access Network is a candidate solution in 5G and beyond where we intend to serve as many users as possible with minimum transmit power and minimum fronthaul data transmission. In this study, we aim to maximize ...
Metric scale and angle estimation in monocular visual odometry with multiple distance sensors
Ölmez, Burhan; Tuncer, Temel Engin (2021-10-01)
In this paper, a novel approach is presented to estimate the metric scale (MSC) and roll and pitch angles of a platform by using distance sensors in a monocular visual odometry setup. A state-of-the-art visual odometry alg...
Parallel connected GaN E-HEMT VSI-based servo drives for PMSMs
Yuruk, Huseyin; Keysan, Ozan (2021-09-01)
The operation of parallel-connected servo drives has the advantages of increasing the torque (hence the power) capacity, reliability, redundancy and modularity. However, smaller discrepancies of the system clocks of the in...
The effect of interpolating low amplitude leads on the inverse reconstruction of cardiac electrical activity
Rababah, Ali S.; Bear, Laura R.; Serinağaoğlu Doğrusöz, Yeşim; Good, Wilson; Bergquist, Jake; Stoks, Job; MacLeod, Rob; Rjoob, Khaled; Jennings, Michael; Mclaughlin, James; Finlay, Dewar D. (2021-09-01)
Electrocardiographic imaging is an imaging modality that has been introduced recently to help in visualizing the electrical activity of the heart and consequently guide the ablation therapy for ventricular arrhythmias. One...
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