283 research outputs found
A review of discrete solutions of poisson, laplace, and wave equations
No full textSevgi, Levent (Dogus Author)One- and two-dimensional discrete solutions of Poisson, Laplace, and wave equations are given in this tutorial. The terms wave propagation and numerical propagation are discussed. Simple MATLAB scripts are also supplied.IEEE Antennas and Propagation Societ
Modeling and simulation strategies in wireless propagation and coverage planning
No full textUluışık, Çağatay (Dogus Author) -- Sevgi, Levent (Dogus Author)This paper presents two-dimensional (2D) user-friendly, tailored with attractive and useful graphical user interfaces (GUI), Matlab propagation packages based on the classical knife-edge model and the parabolic equation method that can handle realistic propagation scenarios with non-flat, arbitrarily-designed and user-selected terrain profiles. Any 2D propagation scenario may be built by the user, and field vs. range and/or height profiles can be simulated
Correction to: Bearing fault detection in adjustable speed drives via self-organized operational neural networks (Electrical Engineering, (2024), 10.1007/s00202-024-02764-3)
No full textIn the original publication, the affiliation of first author has been wrongly tagged to second author of the paper. The authors and affiliations should have appeared as follows: Sertac Kilickaya1, Levent Eren21Faculty of Information Technology and Communication Sciences, Tampere University, Korkeakoulunkatu 7, 33720, Tampere, Finland 2Department of Electrical and Electronics Engineering, Izmir University of Economics, Izmir, Turkey The original article has been corrected.Non peer reviewe
Design of a novel microstrip electromagnetic bandgap (EBG) structure
No full textSevgi, Levent (Dogus Author)This paper presents the design, simulation, and experimentation of a novel low-cost small-size high-performance microstrip (MS) electromagnetic bandgap (EBG) structure for MIMIC applications. The simulations and measurements confirm that the stopband characteristics can be easily controlled by changing the stub lengths and the interstub gap
Identity, interests and political culture in Turkey's accession negotiations
No full textKırval, Levent (Dogus Author)This chapter analyses the potential impact of the political culture differences between Turkey and the EU on the ongoing accession negotiations. It also analyses the ways to include the Turkish model successfully within the embryonic post-national formulation emerging in Europe. To this end, as well as the necessary transformations Turkey has to go through, the steps for a further deepening of European integration, which will also allow the coexistence of different political cultures, is analysed in a comparative perspective
Novel digital broadcast / communication systems and groundwave propagation prediction requirements
No full textSevgi, Levent (Dogus Author) -- Conference full title: European Conference on Antennas and Propagation: EuCAP 2006; Nice; France; 6 November 2006 through 10 November 2006The use of novel broadcast and communication systems require reviewing and revisiting investigations of propagation characteristics over the Earth's surface along realistic propagation paths through inhomogeneous atmosphere in connection to the international standards like ITU, IEC and ETSI. The aim is to review early analytical studies as well as novel time and frequency domain powerful numerical techniques, and to discuss newly-introduced Matlab-based virtual propagation prediction tools that can be used for educational and research purposes
Validation, verification and calibration in numerical electromagnetics : Canonical tests and comparisons
No full textSevgi, Levent (Dogus Author)Modeling and numerical simulation in electromagnetics is discussed in this paper with emphasize placed on validation, verification and calibration. Canonical examples from antennas, propagation to microstrip circuits are presented. Tests against measurements, when available, are also presented.IEEE,IEEE Electromagnetic Compatibility Society,International Union of Radio Science, URSI,Research-and-production Enterprise "Proryv
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