Dr. Vince Rodriguez of Department of Electrical and Computer Engineering, The University of Mississippi

In Engineering there is not a one-size-fits-all solution. Different types of antennas require different antenna ranges for measuring them. Based on the Recommendations of IEEE STD 149-2021 the audience will learn which is the best approach to measure different antennas as well as understand that there are not hard boundaries and that a not-well suited range can be used  with added uncertainty. A quick sample of uncertainty evaluation is also presented for a type of antenna range.

Sobre la Selección del Mejor Área de Ensayos para Medir las Características Radiadas de Antenas

Como todo en la visa no existe una solución para todos los problemas. Diferentes tipos de antenas requieren áreas de ensayo diferentes para su medición. Basándonos en las recomendaciones del estándar IEEE STD 149-2021 el presentador explicara cual es la mejor área [ara la medición de diferentes antenas. También se explicará que las recomendaciones no son inflexibles y que un área se puede usar para otro tipo de antenas siempre y cuando entendamos el efecto en la incertidumbre de la medición. Para finalizar un ejemplo de como calcular la incertidumbre es presentado para un tipo de área de ensayo.

Biography:

Dr. Vince Rodriguez attended The University of Mississippi (Ole Miss) and obtained his B.S.E.E. in 1994. Following graduation, Dr. Rodriguez joined the Department of Electrical and Computer Engineering at Ole Miss as a research assistant. During his tenure there, he earned his M.S. and Ph.D degrees, both in engineering science with an emphasis in electromagnetics, in 1996 and 1999, respectively. Dr. Rodriguez joined EMC Test Systems (now ETS-Lindgren) as an RF and electromagnetics engineer in June 2000. In this position, he was involved in e-field generator design and the RF design of several anechoic chambers, including rectangular and tapered antenna pattern measurement chambers operating from 100MHz to 40GHz. He was also the principal electromagnetics engineer for the anechoic chamber project at the Brazilian Institute for Space Research (INPE). INPE has the largest anechoic chamber in Latin America capable of testing vehicles, EMC and satellites.  Dr. Rodriguez joined MI Technologies (now NSI-MI Technologies) in November 2014.  Since 2023 he is the manager of the Electromagnetic Analysis Group. Dr. Rodriguez is the author of more than 30 journal publications and over 70 conference papers. He is the author of a very well-received book on anechoic chamber design. He is a senior member of the IEEE and several of its technical societies. As an EMC Society member,  he served as Distinguished Lecturer from 2013 to 2014 and on its Board of Directors. Dr. Rodriguez also served as secretary in the IEEE AP-S Standards Committee and as secretary for the IEEE STD 149 and IEEE STD 1128 Working Groups. He currently serves as co-chair for the IEEE STD 1720 Working Group. Dr. Rodriguez has been Adjunct Research Professor of Electrical Engineering at Ole Miss since 2017 and is a full member of the Sigma Xi Scientific Research Society and Eta Kappa Nu Honor Society. Dr. Rodriguez holds patents for hybrid absorber and a dual ridge horn antenna. 

Address:Oxford, Mississippi, United States

Mr. Zhong Chen of ETS-Lindgren

The antenna extrapolation calibration method is widely recognized as one of the most precise techniques for calibrating antenna far-field gain and is extensively utilized by metrology institutes globally. Originating in the 1970s at the National Bureau of Standards in the USA (now NIST), this method is grounded in the generalized transmission equation—a formulation that extends Friis' transmission formula by incorporating additional nearfield and antenna coupling terms, providing a comprehensive response formula between two antennas in free space as a function of distance.  In practical applications, antenna responses are measured across distances, and through post-processing and curve fitting, antenna far-field gain is extrapolated from these nearfield measurements, typically conducted within an anechoic chamber. This presentation explores recent advancements in post-processing techniques, leveraging state-of-the-art mathematical tools such as empirical mode decomposition, k-space filtering, and compressive sensing. These advancements are aimed at mitigating reflections in the environment, thereby enhancing the accuracy of far-field calibration.

Biography:

Zhong Chen is Chief Engineer at ETS-Lindgren, located in Cedar Park, Texas.  He has over 25 years of experience in RF testing, anechoic chamber design, as well as EMC antenna and field probe design and measurements.  He is an active member of the ANSC C63® committee currently serving as Vice-Chair and is the immediate past Chair of Subcommittee 1 which is responsible for the antenna calibration (ANSI C63.5) and chamber/test site validation standards (ANSI C63.4 and the ANSI C63.25 series).  Mr. Chen is chair of the IEEE Standard 1309 committee responsible for developing calibration standards for field probes, and IEEE Standard 1128 for absorber evaluation.  Currently he is a member of the IEEE EMC Society Board of Directors. He is a past Distinguished Lecturer for the EMC Society and is recognized as an AMTA Fellow.  His research interests include measurement uncertainty, time domain measurements for site validation and antenna calibration, and development of novel RF absorber materials. Several papers authored and co-authored by Mr. Chen have received best paper recognition at global conferences.  Zhong Chen received his M.S.E.E. degree in Electromagnetics from The Ohio State University at Columbus.  He may be reached at zhong.chen@ets-lindgren.com.

Address:Cedar Park, Texas, United States

Mr. Benoit Derat of Rohde & Schwarz

Trends in modern wireless communications, including the use of massive MIMO and millimeter wave frequencies, have supported an increased deployment of electrically large antennas. This created technical and economic challenges as many EMC or regulatory tests require a far-field condition. This talk provides an overview of the recent findings in defining the shortest possible far-field test distance, depending on the size of the device under test, its operation frequency, the target metric and the upper bound acceptable measurement deviation. Practical ways are also described to determine the maximum antenna aperture size that can be tested in the far-field at a given frequency and for a maximum error, in an existing chamber with a defined range length.

Biography:

Benoit Derat received the Engineering degree from SUPELEC, in 2002, and the Ph.D. degree (Hons.) in physics from the University of Paris XI, in 2006. From 2002 to 2008, he worked at SAGEM Mobiles, as an Antenna Design and Electromagnetics Research Engineer. In 2009, he founded ART-Fi, which created the first vector-array specific absorption rate measurement system. He operated as the CEO and the President of ART-Fi, before joining Rohde & Schwarz, Munich, in 2017. He is currently the Senior Director of Engineering for Vector Network Analyzers, Electromagnetic Compatibility, Over-The-Air and Antenna Test applications. Dr. Derat is a Senior Member of the Antenna Measurement Techniques Association (AMTA) and a Distinguished Lecturer of the IEEE EMC Society (2024 – 2025). He is the author of more than 80 scientific journals and conference papers, and an inventor on more than 40 patents, with main focus in antenna systems near and far-field characterization techniques.

Address:Munich, Germany

Prof. Vikass Monebhurrun of CentraleSupélec

The gap between academic and industrial research still exists, especially in underdeveloped and developing countries where it is actually enhanced. Academic research is usually centered on the theoretical aspects aiming publication in high impact factor journals whereas industrial research focuses on the practical aspects aiming commercialization of a product or service. The IEEE standardization activities help bridge the academia industry divide by offering tremendous networking opportunities. The talk will provide some interesting examples of successful collaborations which fostered innovation and entrepreneurship in the field of wireless communication through the development of IEEE standards. Some important antenna measurement standards developed by the IEEE Antennas and Propagation Standards Committee will also be presented.

Biography:

Vikass Monebhurrun received the PhD degree in electronics in 1994 and the Habilitation à Diriger des Recherches (HDR) in physics in 2010 from Université Pierre et Marie Curie (Paris VI) and Université Paris- Sud (Paris XI), respectively. He was engaged in research on electromagnetic non-destructive testing for nuclear power and aeronautical applications until 1998, following which he joined the Department of Electromagnetics at Supélec (CentraleSupélec since 2015). His research interests encompass time domain numerical modeling as well as radio frequency measurements. He actively participated in French National Research Programs on dosimetry of wireless communication systems since 1998: 2G (1999-2002) 3G (2003-2005) and 4G (2007-2010). His research contributed to international standardization committees of European Committee for Electrotechnical Standardization (CENELEC), International Electrotechnical Commission (IEC), and IEEE. He is author and co-author of more than hundred peer-reviewed international conference and journal papers, and he holds three international patents on antennas for mobile communications. He is an active contributor within the standardization committees of IEC 62209, IEC 62232, IEEE 1528 and IEC/IEEE 62704. He was a member of the European COST Action BM 1309 on beneficial effects and medical applications of electromagnetic fields (2014-2018). Prof. Monebhurrun served as member of the Editorial Board of the IEEE COMPUMAG and IEEE CEFC conferences, and IEEE Transactions on Magnetics special issues from 1998 to 2020. He is the founder of the IEEE RADIO international conference for which he served as General Chair for all the eight editions since 2012. He serves as President of the Radio Society (Mauritius) since 2013. He currently chairs the IEC/IEEE 62704-3 and IEEE Antennas and Propagation Standards committees. He further serves as member within several committees of the IEEE Antennas and Propagation Society. From 2019 to 2022, he was AdCom member of the IEEE Sensors Council. Since 2024 he is Member-at-Large of the IEEE Standards Association Board of Governors and IEEE Technical Activities Board Committee on Standards as well as AdCom member of the IEEE International Committee on Electromagnetic Safety (ICES).
He served as Associate-Editor (2016-2021) and Guest-Editor (2018/2019) for the IEEE Antennas and Propagation Transactions and Editor of the IoP Conference Series: Materials Science and Engineering (2013-2019). He is currently Editorial Board member of the IEEE Antennas and Propagation Society Magazine and maintains a column dedicated to standards related activities. He was recipient of the Union Radio-Scientifique Internationale (URSI) Young Scientist Award in 1996, the IEEE Standards Association International Working Group Chair Award in 2017, the IEEE Ulrich L. Rohde Humanitarian Technical Field Project Award in 2018, the International Electrotechnical Commission 1906 Award in 2018 and the IEEE Standards Association International Award in 2019.

Address:France