WORKING GROUP 3: DERIVATION OF SUITABLE MEASUREMENT TECHNIQUES

Chair: Prof. P Corona, Italy

PROJECT CENSUS RETURNS

FOR COST 261 MANAGEMENT COMMITTEE


 
 

( Main. WG3) B2 : Jan Brandt, Spicer off-highway Prod., Ten Briele 3, 8200 Brugge. Tel.: ++ 32 50 40 24 52

TITLE OF PROJECT

Study of the electrical disturbances by Narrow Band radiated EM-energy by method of a stripline and current-clamp.

INVESTIGATORS' NAMES

Jan Brandt

Spicer off-highway Prod.

Ten Briele 3

8200 Brugge

Tel.: ++ 32 50 40 24 52

PROJECT START & END DATES 1998.

TOTAL FUNDING

BRIEF DESCRIPTION

COLLABORATION DETAILS IF ANY (PARTNERS, PROJECT TITLE ETC.)
 
 

(Main. WG3) D5 : Leader: Dr. U. Knauff, Prof. Dr. Juergen Nitsch,University of Magdeburg, PO Box 4120, D-39016 Magdeburg, Germany e-mail:

juergen.nitsch@et.uni-magdeburg.de

TITLE OF PROJECT

Measurement of EMC-relevant parameters of cables and transmission lines

INVESTIGATORS’ NAME: Dr. U. Knauff

PROJECT START & END DATES 1998 - 2001

TOTAL FUNDING Not applicable

BRIEF DESCRIPTION

Development of test setups and test methods for

- the measurement of the parameters

. of multiconductor transmission lines and cables

. of nonuniform transmission lines

- the measurement of transfer impedance and transfer admittance

. of shielded multiconductor cables

. of bundles of different cables and transmission lines

- the measurement of radiation losses at inhomogeneities and discontinuities

of transmission lines and cables

- the measurement of disturbing currents on cable shields and inner conductors

during irradiation of transmission lines

Consideration of surroundings, for example electroconductive components

COLLABORATION DETAILS IF ANY (PARTNERS, PROJECT TITLE ETC.)

Technical University of Hamburg-Harburg, Prof. ter Haseborg
 
 

(Main. WG3) D6 : Leader: Dr. H.-G. Krauthaeuser, Prof. Dr. Juergen Nitsch,

University of Magdeburg, PO Box 4120, D-39016 Magdeburg, Germany

e-mail: juergen.nitsch@et.uni-magdeburg.de
e-mail: hgk@et.uni-magdeburg.de

TITLE OF PROJECT

Mode-Stirred Chambers for EMC Measurements

INVESTIGATORS’ NAME: Dr. H.-G. Krauthäuser - email hgk@et.uni-magdeburg.de

PROJECT START & END DATES Start: 1.10.1998

TOTAL FUNDING Not applicable

BRIEF DESCRIPTION

Mode-Stirred Chambers (MSC) are large (in terms of the wavelength) high Q cavities whose boundary conditions are perturbed using a conducting tuner or stirrer in order to achieve a high and (periodically) homogeneous field with low input power compared to open area test sites (OATS) or semi anechonic chambers.

Although MSC have been introduced in 1968 many questions concerning the basic (field) properties and the traceability towards OATS measurements are still unanswered.

COLLABORATION DETAILS IF ANY (PARTNERS, PROJECT TITLE ETC.)

Technical University of Braunschweig, Prof. Enders

University of Karlsruhe, Prof. Schwab

University of Hannover, Prof. Garbe (GTEM-Cell)

(Main. WG3) ROM8 : Dipl. Eng., M Radulescu, INSCC, Bucharest, ROMANIA

TITLE OF PROJECT

Development of testing procedures and methods for telecommunications products related to electromagnetic compatibility (EMC)

INVESTIGATORS’ NAMES:

Marin Radulescu, Vlad Contescu, Adrian Dan from INSCC,

Dan Rucinschi from University "Politehnica" Bucharest

PROJECT START & END DATES: 1998 - 1999

TOTAL FUNDING: 70,700 USD from which 58,000 USD(1999)

BRIEF DESCRIPTION:

- The telecommunications products are installed in the telecommunications system made of various installations and lines. This system must work acceptably in the presence of some inside-system disturbances (crosstalks, reflections) and extra-system disturbances (radio or electromagnetic disturbances, LEMP, ESD etc.);

- Within the frame of the project will be defined, identified or detailed:

- EUT representative types;

- electromagnetic installation environment;

- EMC tests;

- acceptance criteria.

- The achievement of this project contributes to the implementation preparation of EMC Directive 89/336/EEC in Romania, in the context of European integration.

COLLABORATION DETAILS:

- University "Politehnica" Bucharest, Electrical Power Chair

(Main. WG3 & WG1) UK6 : Mr N G Riley, University of Hull, UK

TITLE OF PROJECT

Measurement and Characterisation of Man-made Radio Noise and Interference

INVESTIGATORS’ NAMES

Mr N G Riley

Mr A O Adetunji

PROJECT START & END DATES Start: 1/12/97 End: 30/11/99

TOTAL FUNDING Privately Funded Extension of Previous DTI Contract (79000 Pounds Sterling)

BRIEF DESCRIPTION

Manmade radio noise is a particular manifestation of radio interference generated as a consequence of a wide variety of man s activities. In a previous study, a measurement system was implemented which was optimised for measurement of wideband radio noise and interference. A suite of software was also written to analyse noise measurements in terms of APD, NAD, PSD, PDD etc. A further system has now been developed based on the use of a fast sampler and its use is being investigated for

various noise and interference studies.

COLLABORATION DETAILS IF ANY (PARTNERS, PROJECT TITLE ETC.)

None at present.
 
 
 
 

(Assoc. WG3) I4 : Prof P Corona, Istituto Universitario Navale, Via A. Action, 38, I-80133 Napoli, ITALY

TITLE OF PROJECT

Reference Electromagnetic Field Production and Evaluation

INVESTIGATORS’ NAMES

P Corona

A DeBonitatibus

G Ferrara

M Migliaccio

PROJECT START AND END DATES

It is basically a research line, running throughout several years, and placing each year sub-arguments in some specific context.

TOTAL FUNDING Typical 15.000 Euro/year (funding does not include salaries and overheads: this almost doubles the amount)

BRIEF DESCRIPTION

Reference fields are produced in many ways, and tend to establish an electromagnetic environment suited to test equipment. Such an environment has to be reproducible, has to couple with the equipment under test in a controllable way and has to be protected with reference to interference.

Some possibilities are appealing: they are anechoic chambers, TEM cells and reverberating chambers, however the possible frequency coverage, as well as the coupling mechanism are very dissimilar. Unified techniques, such as field uniformity evaluation, are necessary in order to assess either their meaningfulness or their "performance". Loading capability (i.e. the aptitude to host equipment under test with second order distortion) is also important, as well as statistical performance. Typical parameters, evaluation techniques, and comparison procedures form the purpose of the referred activity.
 
 

(Assoc. WG3) ROM10 : Dr. A Marinescu, ICMET, Craiova, ROMANIA

TITLE OF PROJECT

Simulation, Building and Testing of the Anechoic Chambers intended for EMC Determination

INVESTIGATORS’ NAMES:

A. Marinescu, A. Dragomir, A. Scornea, P. Nicoleanu, G. Mihai from ICMET Craiova

PROJECT START & END DATES: 1996 - 2000

TOTAL FUNDING: 120,000 USD from which 52,000(1999)

BRIEF DESCRIPTION:

- 3D numerical simulation of electromagnetic field distribution in screened

rooms by means of FEM;

- 3D numerical simulation of electromagnetic field distribution in anechoic

chambers fully lined with absorbing ferrite plates;

- numerical model validation;

- drawing up of the technique for absorbing material characteristics

determination;

- design and achievement of the anechoic chamber 8 x 4 x 4 m.

Screen attenuation measurement;

- design of cost-effective system for absorbing material lining;

- anechoic chamber achievement;

- preliminary tests, improvements, final tests and certification.

COLLABORATION DETAILS:

- PTB Braunschweig Germany (Prof. Glimm, Dr. Spitzer), University of Karlsruhe, IEH Institute (Prof. A. J. Schwab, Mr. Krattenmacher, Mr. Petirsch), University of York - EMC Group, PARLIS Research Program (Prof. A. C. Marvin, Dr. Welsh, Dr. Dawson, Mr. Marshman)
 
 

(Assoc. WG3) UK1 : Prof P Excell, University of Bradford, UK

TITLE OF PROJECT

Impulse-Radiating Antenna for EMC Testing

INVESTIGATORS' NAMES

P.S. Excell, R.W. Clarke

PROJECT START & END DATES Started 1995: ongoing

TOTAL FUNDING £50k, pounds sterling, to date.

BRIEF DESCRIPTION

An antenna capable of radiating a band-limited pulse with minimal

distortion, negligible loss and significant directivity is being

developed. The design is based on a modified log-periodic dipole array

with independent feeds to each dipole. This has been modelled with a

time-domain integral equation program and then realised in hardware:

measurements showed good agreement with the predicted performance.

Further optimisation if the design is being investigated.

COLLABORATION DETAILS IF ANY (PARTNERS, PROJECT TITLE ETC.)

A.D. Tinniswood, University of Utah: software support.