Department of Electrical and Electronics Engineering

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Recent Submissions

Isotropic gap formation, localization, and waveguiding in mesoscale Yukawa-potential amorphous structures Sarihan, Murat Can; Gövdeli, Alperen; Lan, Zhihao; Yilmaz, Yildirim Batuhan; Erdil, Mertcan; Wang, Yupei; Aras, Mehmet Sirin; Yanik, Cenk; Panoiu, Nicolae Coriolan; Wong, Chee Wei; Kocaman, Serdar (2024-12-01) Amorphous photonic structures are mesoscopic optical structures described by electrical permittivity distributions with underlying spatial randomness. They offer a unique platform for studying a broad set of electromagneti...
Enhanced Near-Field Microwave Imaging System with Polarization Diversity Dalkilic, A.; Öktem, Sevinç Figen; Alatan, Lale (2024-03-01) In this letter, the impact of antenna polarization configuration and polarization diversity on the imaging quality of a near-field microwave imaging system is examined. Unlike previous works, this study also develops an ef...
Predictive Modeling of Light–Matter Interaction in One Dimension: A Dynamic Deep Learning Approach Aşırım, Özüm Emre; Asirim, Ece Z.; Kuzuoğlu, Mustafa (2024-02-01) The mathematical modeling and the associated numerical simulation of the light–matter interaction (LMI) process are well-known to be quite complicated, particularly for media where several electronic transitions take place...
A Multiobjective Array Beamforming Method for Arrays of Flexible Shape Meng, Chenfeng; Zhang, Yongwei; Temiz, Murat; El-Makadema, Ahmed (2024-02-01) High-performance beamforming incorporating multiple objectives for large-scale antenna arrays becomes increasingly important to improve the capacity and efficiency of wireless communication systems. The speed of synthesizi...
Design and verification of a parallel elastic robotic leg. Tanfener, Emre; Karagoz, Osman Kaan; Candan, Sinan Şahin; Turgut, Ali Emre; Yazıcıoğlu, Yiğit; Ankaralı, Mustafa Mert; Saranli, Uluc (2024-01-29) This paper presents the design and experimental verification of a parallel elastic robotic leg mechanism that aims to capture the dynamics of the linear mass-spring-damper model. The mechanism utilizes a wrapping cam mecha...
Efficient physics-based learned reconstruction methods for real-time 3D near-field MIMO radar imaging Manisali, Irfan; Oral, Okyanus; Öktem, Sevinç Figen (2024-01-01) Near-field multiple-input multiple-output (MIMO) radar imaging systems have recently gained significant attention. These systems generally reconstruct the three-dimensional (3D) complex-valued reflectivity distribution of ...
Reduced Complexity Correlation-Based Multi-Stream DPD for Hybrid Massive MIMO Salman, Murat Babek; Ucuncu, Ali Bulut; Güvensen, Gökhan Muzaffer (2024-01-01) This paper proposes a reduced complexity digital predistortion (DPD) scheme for fully-connected hybrid beamforming systems for massive multiple-input multiple-output (MIMO) channels impaired by nonlinear power amplifiers (...
Learning Graph ARMA Processes From Time-Vertex Spectra Güneyi, Eylem Tuǧçe; Yaldiz, Berkay; Canbolat, Abdullah; Vural, Elif (2024-01-01) The modeling of time-varying graph signals as stationary time-vertex stochastic processes permits the inference of missing signal values by efficiently employing the correlation patterns of the process across different gra...
Induced Current Electro-Thermal Imaging for Breast Tumor Detection: A Numerical and Experimental Study Tanrıverdi, Volkan; Gençer, Nevzat Güneri (2024-01-01) This study proposes using magnetically induced currents in medical infrared imaging to increase the temperature contrast due to the electrical conductivity differences between tumors and healthy tissues. There are two obje...
Design, simulation, and measurement of near-zero-index shells for electromagnetic beam generation Eriş, Özgür; Ergül, Özgür Salih (2024-01-01) We present design and simulation of three-dimensional (3D) shell structures, which generate directional radiation patterns from isotropic sources thanks to their near-zero-index (NZI) characteristics, as well as realizatio...
A Hierarchical Control Scheme for Trajectory Tracking USVs in Environments with Disturbances and Dynamic Obstacles Ahiska, Kenan; Leblebicioğlu, Mehmet Kemal (2024-01-01) In this paper, a hierarchical control scheme for trajectory-tracking unmanned surface vehicles (USVs) is proposed and tested. The proposed control scheme is capable of avoiding dynamic obstacles under wind and sea current ...
Optimal sizing of battery energy storage system for a large-scale offshore wind power plant considering grid code constraints: A Turkish case study Mokhtare, Mohammad Hossein; Keysan, Ozan (2024-01-01) Integration of large-scale wind farms (WFs) into the grid has to meet the critical constraints set in the national grid code. Wind farm operators (WFOs) are inclined to comply with these constraints and avoid heavy penalty...
Capacitor sizing of three-level neutral point clamped voltage source inverter for electric vehicles: Effects of modulation and motor characteristics Ogan, Serhat Emir; Bostancı, Emine (2024-01-01) A three-level neutral point clamped (3L-NPC) voltage source inverter (VSI) topology can be advantageous in electric vehicles with a high DC-link voltage and a high switching frequency. A bulky DC-link capacitor is not an o...
Cascaded Model Predictive Control of Underactuated Bipedal Walking with Impact and Friction Considerations SOVUKLUK, Sait; Ott, Christian; Ankaralı, Mustafa Mert (2023-12-19)
Distributed Model Predictive Formation Control of Robots with Sampled Trajectory Sharing in Cluttered Environments Satır, Sami; Aktaş, Yasin Furkan; Atasoy, Simay; Ankaralı, Mustafa Mert; Şahin, Erol (2023-12-13)
Motion Control and Planning of a Bio-Inspired Aerial Vehicle with an Actively Controlled Abdomen-Like Appendage GÜNEY, BERRİN; Ankaralı, Mustafa Mert (2023-12-13)
Deep reinforcement learning aided Rate-Splitting for Interference Channels Irkıçatal, Osman Nuri; Yüksel Turgut, Ayşe Melda; Ceran Arslan, Elif Tuğçe (2023-12-04)
MIMO asynchronous MAC with faster-than-Nyquist (FTN) signaling Zhang, Zichao; Yüksel Turgut, Ayşe Melda; Yanıkömeroğlu, Halim; Ng, Benjamin K.; Lam, Chan-Tong (2023-12-04)
Laser seeker design with multi-focal diffractive lens Ünal, Ahmet (2023-12-01) Diffractive optical elements are increasingly favoured due to their ability to provide numerous design freedoms by adjusting the Fresnel regions. The design freedoms make it possible to meet multiple system functions in el...
A Multi-Mode Pattern Diverse Microstrip Patch Antenna Having a Constant Gain in the Elevation Plane Karaçuha, Kamil; Çelik, Feza Turgay; Helvaci, Halil Ismail (2023-11-12) This study investigates a multi-mode pattern diverse microstrip patch antenna operating at 2.45 GHz. The study aims to have a flat top gain covering more than 900 in the elevation plane to provide equal service quality to ...

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