Los Angeles EMC Chapter Webinar Meeting: Protecting Power, Signal, and Data Lines from Adverse EMI/EMP Effects


Join us for a LIVE 90-minute webinar featuring an IEEE EMC Society Distinguished Lecturer.  There is no cost to attend and all IEEE members and guests are welcome. Advance registration is required.  Register at https://register.gotowebinar.com/register/4123002986630841103

This LIVE webinar features two presentations followed by Q&A with the speakers moderated by Farhad Rachidi with the Swiss Federal Institute of Technology (EPFL), joining us from Lausanne, Switzerland.  Dr. Rachidi is currently a member of the Advisory Board of the IEEE Transactions on Electromagnetic Compatibility and the President of the Swiss National Committee of the International Union of Radio Science. He is a Fellow of the IEEE and of the SUMMA Foundation, and a member of the Swiss Academy of Natural Sciences.

The webinar is sponsored by the Los Angeles, Germany, and Switzerland EMC Chapters of the IEEE.  See presentation titles, abstracts, and speaker bios below.

  Date and Time




  • Date: 14 Oct 2020
  • Time: 08:00 AM to 09:30 AM
  • All times are (GMT-08:00) US/Pacific
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Virtual Meeting - Webinar - Register at https://register.gotowebinar.com/register/4123002986630841103

  • Janet O'Neil, Vice-Chair Los Angeles EMC Chapter, 425-443-8106

    Register at https://register.gotowebinar.com/register/4123002986630841103

  • Co-sponsored by Milwaukee, Germany, and Switzerland EMC Chapters


Mr. Sergio Longoria Mr. Sergio Longoria of ETS-Lindgren


The EMP and IEMI Threat: Protection and Mitigation

Abstract:  EMC regulations already strive to provide a certain level of protection against unintentional interference between electronic devices, and industry generally incorporates many of these protections.  In addition, while it may be possible to protect some electronic devices and appliances against EMP and IEMI, the cost of doing this on each device may drive the price to the consumer too high.  With this in mind, protection strategies have been developed where commercially available electronic products (or COTS), with no other protections except those afforded by EMC regulations, may be placed in an environment that can effectively shield them from being adversely affected by an electromagnetic pulse (EMP) or intentional electromagnetic interference (IEMI) event.  In this presentation, we will review general techniques on how to mitigate the effects of EMP or IEMI in these protected environments.  More specifically, we look at techniques pertaining to PoE (Points of Entry or Egress). The presentation also provides tips on characteristics to look for in the selection of protection devices used in these environments.  We will conclude with a review of the typical qualification process for the protection equipment.


Sergio N. Longoria, BSEE, studied at the Instituto Tecnológico y de Estudios Superiores de Monterrey.  He is a US Air Force veteran and has over 25 years of experience in the electronics industry, 19 of which are in the design of power and signal filters including HEMP/IEMI and special commercial, military, and defense applications.  He currently collaborates with SC77C of the IEC in the creation of standards for HEMP and IEMI.  He has been with ETS-Lindgren since 2001 and is currently the Technical Product Line Manager for Filters, based at the company’s headquarters in Cedar Park, Texas.  He may be reached at sergio.longoria@ets-lindgren.com.


Address:Cedar Park, Texas, United States

Dr. D. V. Giri Dr. D. V. Giri of Pro-Tech


Design and Evaluation of Simple Electrical Circuit Components (R, L and C) for High-Voltage/High-Frequency Applications

Abstract:  Resistors, Inductors and Capacitors are common electrical circuit elements. They are easy to design and readily available for use at low frequencies (up to a few MHz). As we increase the frequency to 10’s and 100’s of MHz, these elements tend to have complex equivalent circuits. New approaches are needed to make them work efficiently at high-frequencies. In addition, in high-power EMs (HPE) applications, we are also concerned about arcing and breakdown issues within and across these components. In this talk, we review certain methods of building electrical components (R, L and C) specifically for HV and HF applications. It is well known that high-frequencies and high-voltages impose conflicting requirements. High-voltage applications require increased inter-electrode distances, while high-frequency operation requires dimensions to be small. If we consider the feed point of an antenna, high-voltage argues for more space, while high-frequencies require smaller spaces. Furthermore, we require R, L and C elements for many HPE applications such as elements of pulse-shaping networks and terminators for transmission lines. They are also needed in the design of high-performance EMC filters. In this presentation, we discuss how R, L and C elements can be built for both high-voltage and high-frequency applications.


Dr. D. V. Giri is a consultant based in Wellesley, MA, performing R&D work for the U.S. Govt. and Industry. He is also an Adjunct Professor in the Dept. of ECE, University of New Mexico, Albuquerque.  Dr. Giri has over 40 years of experience in the general field of EM theory and its applications in NEMP (Nuclear EM Pulse), HPM (High-Power Microwaves), Lightning, and UWB (Ultra Wideband).  Dr. Giri was a Research Associate for the National Research Council at the Air Force Research Laboratory (AFRL), Kirtland AFB, New Mexico, where he conducted research in EMP and other aspects of EM theory.  He is a Life Fellow of the IEEE, Member of Commission B, URSI, International Chairman of Commission E, URSI (2104-2017), SUMMA Foundation Fellow, and Recipient of the IEEE Antennas and Propagation Society’s 2006 John Kraus Antenna Award.  He has authored two books: High-Power Microwave Systems and Effects published by Taylor and Francis in 1994 and High-Power EM Radiators: Nonlethal Weapons and Other Applications published by Harvard University Press in 2004.  He co-authored the book High-Power Radio Frequency Effects on Electronic Systems, published by Artech House in 2020.  He is a recipient of the 2017 Carl Baum Medal. He obtained the B.Sc., Mysore University, India, (1964), B.E., M.E., Indian Institute of Science, (1967) (1969), M.S., Ph.D., Harvard University, (1973) (1975), Certificate, Harvard Introduction to Business Program, (1981).  Dr. Giri is currently serving the EMC Society as a Distinguished Lecturer.


Address:Wellesley , Massachusetts, United States


8:00 am Welcome and Announcements, Farhad Rachidi, Switzerland EMC Chapter

8:05 am The EMP and IEMI Threat:  Protection and Mitigation by Sergio Longoria, Technical Product Line Manager for Filters, ETS-Lindgren

8:30 am Design and Evaluation of Simple Electrical Circuit Components (R, L and C) for High-Voltage and High-Frequency Applications by Dr. D. V. Giri, IEEE EMC Society Distinguished Lecturer                           

9:15 am  Q&A with the speakers, moderated by Professor Rachidi                      

9:30 am  Wrap Up/Final Comments

Register at https://register.gotowebinar.com/register/4123002986630841103