Prof Levent Sevgi - Electromagnetics Education and Guided Wave Theory
This session will consist of 2 IEEE Antennas and Propagation Distinguished Lectures:
From ENGINEERING ELECTROMAGNETICS to ELECTROMAGNETIC ENGINEERING: Teaching/Training Next Generations
Abstract
The role of Electromagnetic (EM) fields in our lives has been increasing. Communication, remote sensing, integrated command/ control/surveillance systems, intelligent transportation systems, medicine, environment, education, marketing, defense are only a few areas where EM fields have critical importance. We have witnessed the transformation from Engineering Electromagnetics to Electromagnetic Engineering for the last few decades after being surrounded by EM waves everywhere. Among many others, EM engineering deals with broad range of problems from antenna design to EM scattering, indoor–outdoor radiowave propagation to wireless communication, radar systems to integrated surveillance, subsurface imaging to novel materials, EM compatibility to nano-systems, electroacoustic devices to electro-optical systems, etc. The range of the devices we use in our daily life has extended from DC up to Terahertz frequencies. We have had both large-scale (kilometers-wide) and small-scale (nanometers) EM systems. Large portion of these systems are broadband and digital, and have to operate in close proximity that results in severe EM interference problems. Engineers have to take EM issues into account from the earliest possible design stages. This necessitates establishing an intelligent balance between strong mathematical background (theory), engineering experience (practice), and modeling and numerical computations (simulation).
This keynote lecture aims at a broad-brush look at certain teaching / training challenges that confront wave-oriented EM engineering in the 21st century, in a complex computer and technology-driven world with rapidly shifting societal and technical priorities.
The lecture also discusses modeling and simulation strategies pertaining to complex EM problems and supplies several user-friendly virtual tools, most of which have been presented in the IEEE AP Magazine and which are very effective in teaching and training in lectures such as EM Wave Theory, Antennas and Radiowave Propagation, EM Scattering and Diffraction, Guided Wave Theory, Microstrip Circuit Design, Radar Cross Section Prediction, Transmission Lines, Metamaterials, etc.
References
- Sevgi, Electromagnetic Modeling and Simulation, IEEE Press – John Wiley (EM Wave Series), NJ, Apr 2014.
- Sevgi, Complex Electromagnetic Problems and Numerical Simulation Approaches, IEEE Press – John Wiley & Sons, May 2003.
- Sevgi, A Practical Guide to EMC Engineering, ARTECH House, Norwood, MA, March 2017.
- Apaydın, L. Sevgi, Radiowave Propagation and Parabolic Equation Modeling, IEEE Press – John Wiley, NJ, Sep 2017.
- Apaydın, L. Sevgi, Electromagnetic Diffraction modeling and simulation with MATLAB, ARTECH House, Norwood, MA, Feb 2021.
GUIDED WAVE THEORY
Abstract
This IEEE AP-S DL talk discusses guided wave theory (GWT). This theory is important in teaching EM. In most of these problems such as transmission lines, 2D parallel plate waveguides, 3D rectangular and/or circular cross-section wavegudies analytical exact solutions are known. This is specifically important in (i) understanding the problem and gaining physical insight, (ii) generating reference data for measurements and numerical simulations. An undergrad-level GWT can be taught by first decomposing Maxwell equations into transverse and longitudinal components and discussing Sturm-Liouville equation in 1D; establishing characteristic relations between source-free (homogeneous) and source-driven (inhomogeneous) representations. Then, orthogonality and completeness can be summarized. As a canonical structure, mathematical details of 2D parallel plate waveguide with non-penetrable boundaries can be given. The formation of longitudinal correlation function and the steps of eigenvalue extraction procedure can be explained. A few other guiding problems may also be included. In the grad-level, the Ray-mode representations inside the 2D parallel plate waveguide may be taught. Details of alternative integral representations and derivations by contour deformations, residue series, etc., on various complex-planes can be discussed. MATLAB-based virtual tool RAYMODE can be used to visualize effects of rays, modes individually and in hybrid form on various user-specified scenarios.
References
- Sevgi, Electromagnetic Modeling and Simulation, IEEE Press – John Wiley, NJ, April 2014.
- Sevgi, Complex Electromagnetic Problems and Numerical Simulation Approaches, IEEE Press – John Wiley & Sons, May 2003.
- Sevgi, “Teaching Electromagnetic Modeling and Simulation as a Graduate-Level Course,” IEEE Antennas and Propagation Magazine, 54, 5, pp.261-269, Oct 2012.
- B. Felsen, F. Akleman, L. Sevgi, “Wave Propagation inside a Two-dimensional Perfectly Conducting Parallel Plate Waveguide: Hybrid Ray-Mode Techniques and Their Visualizations,” IEEE Antennas and Propagation Magazine, 46, 6, Dec 2004, pp.69-89.
- Sevgi, F. Akleman, L. B. Felsen, “Visualizations of Wave Dynamics in a Wedge-waveguide with non-penetrable Boundaries: Normal, Adiabatic, and Intrinsic Mode Representations,” IEEE Antennas and Propagation Magazine, 49, 3, Jun 2007, pp.76-94.
- Sevgi, “Guided Waves and Transverse Fields: Transverse to What?” IEEE Antennas and Propagation Magazine, 50, 6, pp.221-225, Dec 2008.
- Apaydin, L. Sevgi, “A Canonical Test Problem for Computational Electromagnetics (CEM): Propagation in a Parallel Plate Waveguide,” IEEE Antennas and Propagation Magazine, 54, 4, Aug 2012, pp.290-315.
- Sevgi, “Guided waves and Eigenvalue Extraction from Propagation Characteristics,” IEEE Antennas and Propagation Magazine, 50, 2, Apr 2008, pp.222-234.
- Apaydin, L. Sevgi, “A MATLAB-based Simulator for Guided Wave Modelling inside a 2D Parallel Plate Waveguide,” IEEE Antennas and Propagation Magazine, 59, 4, pp.100-104, Aug 2017.
Date and Time
Location
Hosts
Registration
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- UNSW Canberra at the Austalian Defence Force Academy
- Northcott Drive
- Campbell, Australian Capital Territory
- Australia
- Building: Between buildings 30 and 32
- Room Number: SR06
- Click here for Map
- Starts 23 August 2022 04:39 AM UTC
- Ends 13 September 2022 02:00 AM UTC
- No Admission Charge
Speakers
Prof Levent Sevgi
Biography:
Prof. Dr. Levent Sevgi is a Fellow of the IEEE (since 2009) and the recipient of IEEE APS Chen-To Tai Distinguished Educator Award (2021). He received his B. Eng., M. Eng., and PhD degrees in Electronic Engineering from Istanbul Technical University (ITU) in 1982, 1984 and 1990, respectively. In 1987, while working on his PhD, he was awarded a fellowship that allowed him to work with Prof. L. B. Felsen at Weber Research Institute / New York Polytechnic University York for two years. His work at the Polytechnic concerned the propagation phenomena in non-homogeneous open and closed waveguides.
He was with Istanbul Technical University (1991–1998), TUBITAK-MRC, Information Technologies Research Institute (1999–2000), Weber Research Institute / NY Polytechnic University (1988–1990), Scientific Research Group of Raytheon Systems Canada (1998 – 1999), Center for Defense Studies, ITUV-SAM (1993 –1998 and 2000–2002) and with University of Massachusetts, Lowell (UML) MA/USA as a full-time faculty (2012 – 2013), with DOGUS University (2001-2014) and with Istanbul OKAN University (2014 - 2021). He has been with Istanbul ATLAS University Since Sep 2022.
He has been an IEEE AP-S Distinguished Lecturer for the term 2020-2022. He served one-term in the IEEE AP-S AdCom (2013-2015) and one-term and as a member of IEEE AP-S Field Award Committee (2018-2019). He has been the writer/editor of the “Testing ourselves” Column in the IEEE AP Magazine (since Feb 2007), a member of the IEEE AP-S Education Committee (since 2006), He has also served in several editorial boards (EB) of other prestigious journals / magazines, such as the IEEE AP Magazine (since 2007), Wiley’s International Journal of RFMiCAE (2002-2018), and the IEEE Access (2017-2019 and 2020 - 2022). He is the founding chair of the EMC TURKIYE International Conferences (www.emcturkiye.org).
He has been involved with complex electromagnetic problems and complex communication and radar systems for nearly three decades. His research study has focused on propagation in complex environments; electromagnetic scattering and diffraction; RCS prediction and reduction; EMC/EMI modelling, simulation, tests and measurements; multi-sensor integrated wide area surveillance systems; surface wave HF radars; analytical and numerical methods in electromagnetics; FDTD, TLM, FEM, SSPE, and MoM techniques and their applications; bio-electromagnetics. He is also interested in novel approaches in engineering education, teaching electromagnetics via virtual tools. He also teaches popular science lectures such as Science, Technology and Society.
He has given dozens of seminars, invited/keynote talks, organized/presented several tutorials, training sessions and short courses from half-day to three-days in universities/institutes all around the World. He has published more than a dozen special issues / sections in many journals as a guest editor and/or a co-guest editor.
His recent keynote talks / distinguished lectures are: (i) From Engineering Electromagnetics towards Electromagnetic Engineering: Teaching, Training Next Generations, MIT Massachusetts Institute of Technology, Nov 9, 2021, MA-USA (ii) Radiowave Propagation Modeling and Simulation, University of Toronto, Oct 29, 2021, ON-CA, and (iii) Electromagnetic Diffraction Modeling and Simulation, University of Syracuse, Nov 11, 2021 NY-USA.
He has published many books/book chapters in English and Turkish, over 180 journal/magazine papers/tutorials and attended nearly 100 international conferences/symposiums. His three books Complex Electromagnetic Problems and Numerical Simulation Approaches, Electromagnetic Modeling and Simulation and Radiowave Propagation and Parabolic Equation Modeling were published by the IEEE Press - WILEY in 2003, 2014, and 2017, respectively. His fourth and fifth books, A Practical Guide to EMC Engineering (Sep 2017) and Diffraction Modeling and Simulation with MATLAB (Feb 2021) were published by ARTECH HOUSE.
His h-index is 37, with a record of more than 4750 citations (source: Google Scholar, Aug 2022).
Email:
Address:Istanbul ATLAS University,