Determination of radiated emissions of an electrically large EUT: simulation and experiment

Wang, Xiaowei; Vick, Ralf

doi:10.1109/memc.0.7989988

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Hence, an EUT is called "electrically large" if ka > 1 and its maximum directivity can be estimated by (2). The approach has been validated by simulations and measurements in many publications, i.e., [14]- [17]. The theoretical curve resulting from (2) can be seen, e.g., in Figs.…”

Section: Unintentional Electromagnetic Radiatorsmentioning

confidence: 84%

Measurement Validation for the Extension of Emission Measurements in Alternative Test Sites Above 1 GHz

Menssen

Brech

Garbe

2016

IEEE Trans. Electromagn. Compat.

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Measurement procedures for determining the radiated disturbances from electronic equipment are described in several IEC/CISPR standards and are well probed for frequencies up to 1 GHz. Above that frequency, radiation pattern of EUTs evolve complex forms so that the direction and magnitude of the maximum directivity is not known by design. Hence, standardized sampling approaches might underestimate the "true" maximum of the radiated emission. In this paper, an extension of these measurement procedures is proposed. The method uses a stochastic approach for estimating the maximum directivity based on the electrical size of the EUT. This is combined with a total radiated power measurement for a reduced sampling procedure to predict the maximum free-space, far-zone electric field. For validation purposes, an extensive 3-D scan of the radiation pattern of a generic EUT is performed. Different subsampling approaches are then investigated while the new prediction method is applied. It can be shown that the accuracy of the measurement procedures can be increased due to the proposed method.

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Section: Unintentional Electromagnetic Radiatorsmentioning

confidence: 84%

Measurement Validation for the Extension of Emission Measurements in Alternative Test Sites Above 1 GHz

Menssen

Brech

Garbe

2016

IEEE Trans. Electromagn. Compat.

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“…RC or VIRC is regarded as an alternative technique to the FAR for RE testing. The advantage of this technique is that the direction or position of the EUT does not influence the results due to the statistical uniformity and isotropy inside the chamber [95]. Moreover, for further analysis, it's required only the total radiation power information after calibration of the chamber or chamber validation factor (CVF).…”

Section: Comparison: Rc Vs Vircmentioning

confidence: 99%

High strength electromagnetic field generation for radiated EMI measurements

Mandaris

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Electromagnetic Interference (EMI): Measurement and Reduction Techniques

Mathur

Raman

2020

Journal of Elec Materi

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Electromagnetic interference (EMI) is one of the biggest challenges faced during the production of any electronic device. The effect on the performance of the instrument due to these inevitable interferences must be carefully measured to understand and quantify the electromagnetic compatibility (EMC) of the instrument under test. If the EMI profile of the system does not meet the accepted standards, then it becomes necessary to take measures to reduce the influence of these unwanted interferences so that the equipment can be used in the real world. Unfortunately, research and studies on EMI and EMC have not received their due attention from the scientific community. Moreover, the literature available for this area of research is scattered where different sources provide information on one or more (but not all) aspects of EMI/EMC while ignoring the others. With the objective of encompassing this extremely significant area of research in its entirety, this review presents both EMI measurement techniques and EMI reduction techniques in detail. EMI measurement techniques are presented under two sections that deal with emission testing and immunity testing, respectively. Herein, EMI reduction techniques are presented under four sections, where electromagnetic shielding has been given special attention under which various methods used by the scientific community to measure the shielding effectiveness of a material or microwave absorber and its application in EMI reduction are illustrated. This is followed by EMI filters, circuit topology modification and spread spectrum. This review can help students and young scientists in this area to get an idea of the ways to conduct EMI tests as well as the ways that can be employed to reduce the EMI of the system, depending on the application.

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Determination of radiated emissions of an electrically large EUT: simulation and experiment

Cited by 4 publications

References 3 publications

Measurement Validation for the Extension of Emission Measurements in Alternative Test Sites Above 1 GHz

Measurement Validation for the Extension of Emission Measurements in Alternative Test Sites Above 1 GHz

High strength electromagnetic field generation for radiated EMI measurements

Electromagnetic Interference (EMI): Measurement and Reduction Techniques

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