Sources of problems in the GTEM field structure and recommended solutions

Hansen, David R.; Ristau, D.; Radasky, William A.; Smith, Kevin S.

doi:10.1109/isemc.1996.561199

Cited by 18 publications

(7 citation statements)

References 2 publications

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“…Throughout the years, the termination has been improved based on numerical [5] as well as analytical [6] approaches. Not all proposed improvements became commercially available, such as Krause and Mönich's termination, composed of ferrite absorbers and an RC network [7].…”

Section: A State Of the Artmentioning

confidence: 99%

Taking Into Account GTEM Field Nonuniformities in Radiated Immunity Simulations Through a Simple Measurement

Land

Perdriau

Ramdani

2017

IEEE Trans. Electromagn. Compat.

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Abstract-When performing immunity measurements through the 10 × 10-cm aperture of a GTEM (Gigahertz Transverse ElectroMagnetic) cell, its field uniformity is generally unknown. Yet, this (non)uniformity causes an error on test results. Measuring the field uniformity by taking a grid of samples would be timeconsuming. Even with such a measurement, it would be hard to predict the magnitude of this error in immunity measurement results. Therefore, another approach to the problem was taken: several imperfections of the GTEM cell were characterized simultaneously by measuring its S 11 -parameter. Then, the immunity of a DUT (Device Under Test) was simulated with the nominal GTEM field plus the first reflection. Entering this field model into the simulation corrected the major error in the 0.1-2.0 GHz range in some of our test cases, with no degradation in any case. Thanks to the speed of this method, it may be broadly applied, even only to quantify the effect of some of the GTEM's imperfections on a given immunity measurement.

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Section: A State Of the Artmentioning

confidence: 99%

Taking Into Account GTEM Field Nonuniformities in Radiated Immunity Simulations Through a Simple Measurement

Land

Perdriau

Ramdani

2017

IEEE Trans. Electromagn. Compat.

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“…Different test methods have been used over the years to verify the radiated-immunity of equipments such as transverse electromagnetic (TEM) and gigahertz TEM cells [1], used for immunity testing with TEM fields. Also, the use of anechoic and semi-anechoic chambers began to spread as a standard method [2].…”

Section: Introductionmentioning

confidence: 99%

Directive wavefronts inside a time reversal electromagnetic chamber

Moussa

Cozza

Cauterman

2009

2009 IEEE International Symposium on Electromagnetic Compatibility

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Abstract-In this paper, the feasibility of directive wavefronts generation inside a time-reversal electromagnetic chamber (TREC) is investigated in order to propose the TREC system as an alternative EMC test facility. This may be accomplished by applying the time reversal technique on electromagnetic waves inside a reverberation chamber. We evaluate the performance of the TREC in creating directive radiation patterns towards an equipment-under-test (EUT). This evaluation is based on the directivity comparison of a wavefront generated by the TREC, and the one generated by a theoretical model of an antenna array in free space. Numerical simulations of the TREC are in a good agreement with the theoretical array model, showing a root-mean-square (rms) deviation from the mean value of the E-field, over a 3 dB main lobe angle, below 6 %.

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“…Transverse electromagnetic (TEM) field can be applied to the EUT by using TEM cell [1] and Gigahertz-TEM (GTEM) cell [2], [3]. In this case, to obtain radiated-immunity characteristics for the EM field with various incident directions or polarizations, it is necessary to physically change the direction of arrangement of the EUT inside the cell.…”

Section: Introductionmentioning

confidence: 99%

New radiated RF immunity/susceptibility test method using RF-pulsed rotating-EM field

Murano

Tayarani

Xiao

et al. 2008

2008 IEEE International Symposium on Electromagnetic Compatibility

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A new radiated radio-frequency (RF) immunity/susceptibility test method using an RF-pulsed rotatingelectromagnetic (EM) field is proposed. Controlling the pulse width can generate the RF-pulsed signal having an arbitrary bandwidth. By using such RF-pulsed rotating-EM field as an incident-EM field of the immunity/susceptibility test, it is possible to easily investigate the immunity-weak points of electronic equipments. In this paper, the basic characteristics of the RF-pulsed rotating-EM field are clarified. Moreover, some susceptibility characteristics of a cavity with a slit measured by using the RF-pulsed rotating-EM field are shown as an example.

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Sources of problems in the GTEM field structure and recommended solutions

Cited by 18 publications

References 2 publications

Taking Into Account GTEM Field Nonuniformities in Radiated Immunity Simulations Through a Simple Measurement

Taking Into Account GTEM Field Nonuniformities in Radiated Immunity Simulations Through a Simple Measurement

Directive wavefronts inside a time reversal electromagnetic chamber

New radiated RF immunity/susceptibility test method using RF-pulsed rotating-EM field

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