Professor Sungtek Kahng, Dept. of Information & Telecommunication Engineering, Incheon National University, Korea, email:, phone: +82-32-835-8288

Title: “How to Evaluate Near-Field of Metamaterial 5G Beamforming Antennas

A method is suggested to enables us to evaluate the near-field of the 5G array antenna on a handset. We design a 1X4 metamaterial array antenna to create the electromagnetic wave at 28 GHz and increase the antenna gain. We collect the power-density which is the electromagnetic power scanned over a 10 mmX10 mm transverse region at an increasing distance from the point far away from the antenna surface to the far-field. We check the near-field power-density as the results of extrapolating using a 4th-order polynomial, a cubic spline, and Prony functions. Structures.

Professor Sungtek Kahng

Photo & Biography:
He received his Ph.D. degree in electronics engineering and communication engineering from Hanyang University, Korea in 2000, with a specialty in radio science and engineering.
From 2000 to early 2004, he worked for the Electronics and Telecommunication Research Institute on numerical electromagnetic characterization and developed RF passive components/antenna feed assemblies for satellites.
In March 2004, he joined the Department of Information and Telecommunication Engineering at the Incheon National University where he has continued research on analysis and advanced design methods of microwave components and antennas, including metamaterial technologies, MIMO communication, 5G beamforming antennas and wireless power transfer. He succeeded in implementing the UWB Wireless Communication Systems of Gbps Data-Transmission Rate without data compression, 5G beam-steering millimeter-wave antennas on transparent substrates, densely populated antenna-elements for MU-MIMO systems, metamaterial-based compact transceiver modules for multi-band satellite communication, microwave WPT antennas able to turn electric gadgets on from several meters, etc. He is the Antenna and Microwave area evaluator of Korean Satellite Development Programs invited by NRF, while having worked as a consulting professor for Samsung Electronics, Ace technology, Amotech, Innertron and serving as the general chair for APCAP 2019.

Dr. Ir. Adrian Andaya Lestari, Senior Scientist at Labs247, Segitiga Emas Business Park, Jl. Prof. Dr. Satrio KAV 6, Jakarta Selatan – 12940, INDONESIA.

Title: “UWB Bow-Tie Antenna with Tapered Inductive Loading”

A UWB bow-tie antenna, designed to work in the VHF-UHF band, is realized by a novel implementation of tapered inductive loading. The antenna with the proposed loading profile is manufactured as a printed antenna on an FR4 material. It exhibits a fractional bandwidth of over 90% with dimensions of only 20 x 20 cm for a center frequency of 450 MHz. Despite its relatively small size, the proposed antenna works with very high efficiency (nearly 100%), as the employed inductive loading introduces no ohmic loss. In principle, the proposed loading profile can be applied to other frequency bands as well by scaling the antenna dimensions up or down according to the desired center frequency. Thus, it broadens its applicability.

Dr. Ir. Adrian Andaya Lestari

Photo & Biography:
Andrian Andaya Lestari (M’07, SM’17) received M.Sc. and Ph.D. degrees in electrical engineering from Delft University of Technology (TU Delft), The Netherlands, in 1993 and 2003, respectively.
From 1998 to 2013 he was a scientist at the Faculty of Electrical Engineering, Mathematics and Computer Science – TU Delft. Currently he holds a position of senior scientist at LABS 247, a high-tech R&D company in Jakarta, Indonesia. His work includes more than 16 R&D projects, development of 9 radar prototypes, publication of over 100 papers, and 9 inventions. His research interests are radar systems and UWB antennas, for which he holds two patents.
Dr. Lestari was the recipient of the Best Paper Award at the ICITACEE and ICECOS International conferences in 2014 and 2018, respectively, for his work on FMCW maritime radar.

Professor Monai Krairiksh, Faculty of Engineering King Mongkut’s Institute of Technology Ladkrabang, No.1, Soi Chalong Krung 1, Chalong Krung Road, Ladkrabang Sub-district, Ladkrabang district, Bangkok 10520, Thailand

Title: “Essential of Preharvest Sensors”


Tasty and healthy fruits are consumed worldwide. However, they must be harvested at appropriate time. Harvesting too early results in long storage time. On the other hand, short shelf life is due to late harvesting. Conventional means to harvest at appropriate time is to count the days after fruit setting. According to climate change, the suitable date is not consistent. Hence, sensors that can inform appropriate harvesting time are desirable. Although numerous sensors have been developed, they are mostly for postharvest application. Therefore, there is a challenge to develop preharvest sensors. The problem of interest in fruit industry and the solution will be discussed in this presentation.

Professor Monai Krairiksh

Photo & Biography:

Monai KRAIRIKSH was born in Bangkok, Thailand. He received the B.Eng., M.Eng. and D.Eng. degrees in electrical engineering from King Mongkut’s Institute of Technology Ladkrabang (KMITL), Thailand in 1981, 1984, and 1994, respectively. He was a visiting research scholar at Tokai University in 1988 and at Yokosuka Radio Communications Research Center, Communications Research Laboratory (CRL) in 2004. He joined the KMITL and is currently a Professor at the Department of Telecommunication Engineering. He has served as the Director of the Research Center for Communications and Information Technology during 1997-2002. Dr. Krairiksh was the chairman of the IEEE MTT/AP/Ed joint chapter in 2005 and 2006. He served as the General Chairman of the 2007 Asia-Pacific Microwave Conference, and the 2017 International Symposium on Antennas and Propagation. He was the President of the Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology Association (ECTI) in 2010 and 2011 and was an editor-in-
chief of the ECTI Transactions on Electrical Engineering, Electronics, and Communications. He was recognized as a Senior Research Scholar of the Thailand Research Fund in 2005 and 2008 and a Distinguished Research Scholar of the National Research Council of Thailand. He served as a distinguished lecturer of IEEE Antennas and Propagation Society during 2012-2014 and an associate editor of IEEE Transactions on Antennas and Propagation during 2014-2019.

Shaymardanov Ruslan V. , Ph.D., CEO (General Microwave LLC), Head of Product Department, Email:, Tel.: +7 (495) 776-79-03

Title: “Practical Aspects of Antenna Elements on Air Substrate Usage”

Nowadays antenna design meets more and more challenges to suite various and quite often conflicting requirements such as wide operational band, even gain in the band, wide radiation pattern and wide operational temperature range. At the same time customers and manufacturers look to have a cheap and simple in production antenna element. Traditional microstrip and patch antenna constructions use dielectric substrates made of various materials. The substrates allow decreasing antenna element dimensions, but at the same time they decrease operational band width and operational temperature range with increasing and complicating manufacturing process. The hereby work presents construction of antenna element which uses air substrate and thus has no such a deficiency. Practical implementation of the antenna element construction for global (GPS, GLONASS, BEIDOU, GALILEO) and local (GAGAN, QZSS) navigation system application is described and presented.

Shaymardanov Ruslan V. , Ph.D.

Photo & Biography:
He received his Ph.D. degree in science from Higher School of Economics (National Research University) under the Government of Russian Federation in 2016, Master degree in Finance from Financial University under the Government of Russian Federation in 2012 and Master degree in Science from Moscow State Institute of Electronics and Mathematics in 2011. He is currently CEO (General Microwave LLC), Head of Product Department. His achievement including New generation of GNSS navigation antenna with the frequency range L1 / L2 / L3 / L5, B1 / B2 / B3, E1 / E2 / E5a / E5b / E6 (GPS, GLONASS, BEIDOU, GALILEO) development and implementation; The project of creating active and passive S-band antenna modules for India region (LNSS GAGAN); Development of an advanced model of personal GPS trackers (for the elderly people, children and pets); Grant of the President of the Russian Federation (for results in scientific activity); Grant of the Government of Moscow (for research in microwave therapy with effects on internal organs). 3 patents; more than 30 publications (Russian and international magazines); participation as an oral speaker in conferences in US, Japan, China, Europe and Russia.

Professor Adit Kurniawan, Head Research Division of Telecommunications Engineering, School of Electrical Engineering and Informatics, Institut Teknologi Bandung; Jl. Ganesa No. 10 Bandung, Indonesia. Email :

Title: “Fabrication of High-Gain and Flexible-Feeding Microstrip Antenna Array Using Two-Stage Design Method”


Professor Adit Kurniawan

Photo & Biography:
Adit Kurniawan completed Undergraduate Degree (B.Eng) in Electrical Engineering from Institut Teknologi Bandung, Indonesia in 1986. Then He completed Master Degree (M.Eng) from RMIT and Ph.D from University of South Australia in Telecommunication Engineering, respectively, in 1996 and 2003. Mr. Kurniawan is currently professor at the School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Indonesia. His research interest covers the area of Antenna and Radio-wave Propagation, Wireless Communications, and Spread Spectrum Communications Systems.

Tapan Kumar Sarkar, Professor Electrical Engineering & Computer Science, Syracuse University, USA, 621 Skytop Road, Syracuse, New York 13244, Phone: 315.443.3775, Email:

Magdalena Salazar Parma, Professor and co-director of the Radiofrequency, Electromagnetics, Microwaves and Antennas Research Group (GREMA), Department of Signal Theory and Communications, Carlos III University of Madrid, SPAIN

Title: What Type of Wave Propagates in Wireless Communication – Zenneck, Surface, Lateral or Ground Waves?

The objective of this paper is to illustrate the type of wave that propagates in a wireless communication system. The mathematical analysis for this propagation mechanism is quite straightforward and has been in the literature for over a hundred years. The solution was first provided by Sommerfeld in 1909. The problem started with the interpretations of the mathematical formulas.
The solution of the electromagnetic wave propagation over Earth is characterized by complex integrals which contain pole singularities, for instance in problems of electromagnetic theory where the poles correspond to modes of a structure, and where one is interested in the effect of these modes on the total field of the excited structure. Examples of such modes could be Zenneck waves, lateral waves, leaky waves, or trapped slow surface waves. Although mathematical techniques for dealing with complex integrals are well developed, the interpretation of the results is not. The problem of the 100 years old controversy was associated with the presence of a pole that is accounted for in the saddle point evaluation of a complex integral. The various types of waves that are then described based on their dependence of their position on the different branches of the various Riemann sheet. The resulting solution in the form of a contour integral is then examined in relation to the intrinsic properties of the media involved and the position of the antenna. The solution is obtained by splitting the integral into pole residues and branch-cut-integral; the latter is evaluated by developing it into a suitable asymptotic series. The presentation will show that the famous mythology of the sign error in Sommerfeld formulation which has continued for almost a hundred years with researchers stating that there is a sign error in the Sommerfeld formulation is just a myth. This is because nobody actually was able to show exactly where the sign error occurred. The objective of this paper is to illustrate that depending on what approximations are made for the complementary error function in the final solution all these modes stated earlier show up at one stage or the other and directly illustrates how the wave will propagate under such mathematical assumptions for a wireless system.

Professor Tapan Kumar Sarkar

Photos and Biographies
Tapan Kumar Sarkar received B.Tech. (IIT, Kharagpur, India), M.Sc.E. (University of New Brunswick, Fredericton, Canada) and M.S. and Ph.D. (Syracuse University, Syracuse, NY, USA). He was an engineer at General Instruments, faculty member at Rochester Institute of Technology, Rochester, NY, USA, and research fellow at Gordon McKay Laboratory, Harvard University, Cambridge, MA, USA. He is Professor at Syracuse University. He has authored or coauthored over 400 journal articles and numerous conference papers, 40 chapters in books and 21 books. He has an H index of 71 with 23,007 citations. He received three Doctor Honoris Causa degrees from Université Blaise Pascal, Clermont-Ferrand, France, 1998; Technical University of Madrid, Spain, 2004; and Aalto University, Helsinki, Finland, 2012. He received the medal “Friend of the City of Clermont-Ferrand”, Clermont-Ferrand, France (2000). He received several research awards: Best Solution Award, RADC Spectral Estimation Workshop, May 1971; Best Paper Award, IEEE Electromagnetic Compatibility, Oct. 1979; College of Engineering Research Award, Syracuse University, 1996; Best Paper Award, National Radar Conference, 1997; Chancellor’s Citation for Excellence in Research, Syracuse University, 1998. He was elevated to IEEE Fellow “for contributions to iterative solutions of numerical models in electromagnetic theory” (1992). He is the recipient of the 2020 IEEE Electromagnetics Award “for contributions to the efficient and accurate solution of computational electromagnetic problems in frequency and time domains, and for research in adaptive antennas”. He is president of OHRN Enterprises, Inc., a small business incorporated in New York state (1985) performing research for government, private and foreign organizations in system analysis and a professional engineer registered in New York. He was IEEE Antennas and Propagation Society (AP-S) Administrative Committee member (2005-2007) and President in 2014, and has served AP-S in other positions.

Professor Magdalena Salazar Palma

Magdalena Salazar Palma received EE, MS and PhD degrees from Technical University, Madrid, Spain, where she was Associate Professor. In 2004 she joined the Department of Signal Theory and Communications, Carlos III University of Madrid, where she is Professor, co-director of the Radiofrequency, Electromagnetics, Microwaves and Antennas Research Group, and served as Department head. She developed her research in a number of areas: from advanced computational and numerical methods for the analysis and design of microwave components and antennas, to passive devices advanced synthesis methods, and millimeter, submillimeter and THz frequency band technologies.
She co-authored 741 publications, among them 8 scientific books and 30 book contributions, 14 academic books, 117 articles in scientific journals and over 400 contributions for international symposia. She has an h-index of 32, with 5,177 citations by other authors. She has coauthored 2 European/USA patents and 6 software packages for the analysis and design of microwave and millimeter wave passive components, antennas and antenna arrays, and advanced filters and multiplexers. She has participated in a total of 95 research projects and contracts financed by Spanish, European, and USA public institutions and companies. She has delivered numerous invited presentations, seminars, and short courses. She has served in evaluation panels of USA, EU, and Spanish institutions, and as associate editor and reviewer of several journals. She is IEEE Fellow “for contributions to the application of numerical techniques to electromagnetic modeling” (2014) and HKN member (2017). She received two research awards and other recognitions. She is Doctor Honoris Causa, Aalto University, Finland (2016). She was IEEE Antennas and Propagation Society Administrative Committee member (2004-2006) and President (2011). She is IEEE Region 8 (Africa, Europe, and Middle East) Delegate/Director, and IEEE Board of Directors member (2019-2020).

*The list has not completed. Some speakers are under confirmation.