Additional Information on the Technical Committees for the Zurich EMC Symposium

TC-1  -  EMC Management


This technical committee is involved with the managerial aspects of EMC compliance. Subject areas include:

For additional information, contact the TC-1 Chairman,

TC-2  -  EMC Measurement Techniques I: (theory)


This technical committee is concerned with measurement methods, instrumentation and sensors for the detection of conducted and radiated EM measured quantities as well as with requirements for EMC standards and procedures, and how they are interpreted. Concerning EM field sensors the susceptibility and frequency range as well as their application in TEM wave guides is of special interest. Included are the subjects of

This committee addresses the theoretical aspects of the subject areas. Practical implementation of measurements and procedures is covered by the TC-3.

For additional information, contact the TC-2 Chairman,

TC-3  -  EMC Measurement Techniques II: (practice)


This technical committee treats all practical aspects of EMC-measurements, which may consist of

In this technical committee, experience with existing procedures and the solution of practical problems in applying the tests in special situations is stressed. The areas of test development and theoretical background of new test procedures is covered by TC-2.

For additional information, contact the TC-3 Chairman,

TC-4  -  EMC Environments I: (stationary)


This technical committee deals with aspects of steady state (including time harmonic) EM environments in the following areas:

Another committee (TC-5) covers transient (and wide-band) EM environments and effects.

For additional information, contact the TC-4 Chairman,

TC-5  -  EMC Environments II: (transient)


This technical committee deals with aspects of non-stationary (i.e., transient) EM environments. Subject areas include

By definition transient environments appear only temporarily and are caused by a large variety of possible disturbances. For reliable operation of electronic circuits it is very important to treat transients properly. However this is sometimes a very difficult task for the EMC engineer, because it is the nature of transients, that neither their quantitative, nor their temporal behavior, nor their exact time of occurrence are known.
Transients typically cover a large frequency range. For example lightning disturbances extend from very low frequencies up to several Megahertz, Electrostatic Discharge (ESD) and Nuclear Electromagnetic Pulse (NEMP) phenomena can have frequency components into the Gigahertz range. Transients generated by switching can be very fast and sometimes repetitive and may disturb electronics by voltage drops or overvoltages.
In the past many standards were developed, or are still under development, to simplify testing for these natural or man-made transients. However, the technical progress and the arrival of relatively new technologies bring along new, perhaps even more challenging transients. Impulse radars typically have an ultrawide-bandwith up to several Gigahertz. High Power Microwave (HPM) pulses have spectra that can be relatively small, but their center frequency is typically between several hundred Megahertz and several Gigahertz.
In addition to these environmental effects, the EMC engineer has to take care of broadband signals as they are present in fast digital circuits. Increasing clock rates require a very sophisticated circuit design. Therefore, ultra-wideband EMC has increasing importance and will have an important impact on coupling studies, high-speed effects, protection technique and time-domain measurement techniques. People working in these areas are welcome to present their contribution in these important subjects at the Symposium, and to mutually profit from other peoples experiences.
This technical committee complements the TC-4 group, which deals with stationary (time harmonic) EM environments, and the TC-9 group, which deals with lightning phenomena.

This technical committee complements the TC-4 group which deals with stationary (time harmonic) EM environments.

For additional information, contact the TC-5 Chairman,

TC-6  -  System-Level EMC I: (modeling)


This technical committee deals with the basic, or theoretical, aspects of modeling for system-level EMC analysis. Included in the committee are the theoretical aspects of the following:

The chairman of this technical committee has provided the following description of the subject area.


1. Objectives

1.1 Two Types of Subjects

The Technical Committee 6 is called "System-Level EMC I: modeling". Papers submitted in this session will deal with models helping to represent EM coupling on realistic systems. The session will cover both model development and applied modeling methods .Of course, papers may combine the development and application aspects.

The models mainly require numerical techniques. Nevertheless, the introduction of measured data to complete those models must not excluded. The models and numerical techniques must be validated thanks to other numerical techniques or measured results

1.2 EMC Model Development

The model development title covers all the techniques used to model EMC. They can be old techniques on which significant improvement is demonstrated. Moreover, new techniques presenting significant interest for the future of modeling will be particularly encouraged.

1.3 EMC Applied Modeling Methods

The subject of applied modeling methods deals with the different ways to apply well-known modeling methods or computer tools to treat generic EMC problems (EMC standard tests, EMC on cables, EMC on large structures). In this domain, authors will be requested to address the general aspects of the subject. More applied and system specific papers are more suited for the TC7, System Level EMC II (effects).

2. Suggested Topics

2.1 Modeling techniques

When EMC modeling coupling is mentioned, people automatically think of 3D computer codes. 3D techniques as Finite Difference Time Domain (FDTD) or frequency domain Method of Moments (MoM) are now currently used. But significant improvements are still demonstrated and, more and more, complex applications are made with them. Moreover, the use of new numerical techniques such as Finite Volumes, time domain MoM, and asymptotic methods could be generalized in future models.

Meanwhile, for many years, Transmission Line models have proved their efficiency for all the electric wire problems (from the power lines to cable bundles) and they are still being widely used and improved in the time and frequency domains (high frequency modeling, non uniform wiring).

For both purposes, static codes demonstrate their utility; for example, in the calculation of the charge on a 3D structures or in the calculation of per unit length inductance and capacitance of lines.

Electrical circuit techniques are also interesting as far as the equipment EM susceptibility is concerned. Particularly, they are able to take into account non linear phenomenon, barely mentioned in EMC modeling. But the issue may be to know when it is really necessary to take them into account.

2.2 Methods of Analysis

EMC engineers are more and more inclined to use models to help them in the understanding and the prediction of system-level EMC. Methods based on only one technique generally encounter limitations. This is why combination of different techniques is nowadays spreading. Indeed, all the numerical techniques previously mentioned can provide powerful specific tools to calculate the response of a complex system from the source to the equipment.

With the development of EM Topology theory, network computation codes get now a real success because they provide the support to connect data coming from different techniques (numerical but also experimental). Beginning with electric circuits, then extended to transmission lines, network codes are now being applied on 3D codes.

Nevertheless, at the same time, statistic methods come to challenge the deterministic approaches. Well established for electrical components, they become to be applied to systems.

For additional information, contact the TC-6 Chairman,

TC-7  -  System-Level EMC II: Practical EMC aspects


This technical committee is charged with investigating practical aspects of EMC on large systems, including

The following synopsis has been prepared by the chairman of the committee.


  1. Scope
    2.

    TC-7 deals with the practical EMC design and qualification aspects of either electrically large or complex systems or the EMC aspects of complex electronic or electrical products.
    Examples of such systems or products are industrial plants, transportation systems such as aircraft, spacecraft or automotive systems and professional products such as hospital systems, communications systems. Further, also the EMC of large distributed systems such as a local area network is subject of this TC.
    The specific simulation and modeling aspects of such systems are dealt with in TC-6


  2. Typical EMC Aspects
    3.

    The EMC aspects of large or complex systems, or products, have the following aspects in common:



  3. Suggested Topics
    4.

    In general, symposium contributions within the scope of TC-7 may encompass the following topics:

For the forthcoming symposium, contribution are solicited concerning the EMC aspects of existing and future wired and wireless network technologies. Since, nowadays many new functions and services are introduced using already existing network hardware, it is very important to forecast the EMC implications of such developments.
Similarly, the effects of new (often wireless) network technologies operating at higher frequency bands, need to be assessed.

For additional information, contact the TC-7 Chairman,

TC-8  -  Chip & Package Level EMC


The charter of the TC-8 is to investigate EMC issues at the chip and package levels, including the topics of

For additional information, contact the TC-8 Chairman,

TC-9  -  Lightning


The lightning discharge is one of the two natural sources of electromagnetic interference (EMI), the other one being the electrostatic discharge. Lightning can be defined as a transient, high-current (typically tens of kiloamperes) electric discharge whose length is measured in kilometers. Electric and magnetic fields generated by lightning represent a serious hazard to various systems, particularly those containing sensitive electronics. Technical Committee on Lightning (TC-9) invites papers on the following topics:

For additional information, contact the TC-9 chairman,

TC-10  -  EMC Innovation


EMC INNOVATION (TC-10) is a technical committee whose aim is to give a fundamental view on the continuous changing of the EMC analysis approaches. It offers a platform for the presenting and discussing the latest EMC/EMI methods that will be the foundations of EMC techniques of the future.

A partial list of the topics covered by this committee is:

For additional information, contact the TC-10 chairman,

TC-11  -  Power System EMC


The overall subject area of this technical committee is in the analysis of conducted and radiated disturbances and of protection measures pertaining to the power network, substations and power electronics.

Specific topics to be treated include:

For additional information, contact the TC-11 chairman,

TC-12  -  EMC Protection


This technical committee is responsible for aspects of mitigating the effects of unwanted EM disturbances on systems and components. The specific technical topics include:

For additional information, contact the TC-12 chairman,