Applicability of the IEC 61000-4-20 for transient testing with UWB signals

Transverse electromagnetic (TEM) waveguides are predominantly used for emission and immunity tests. General requirements for TEM waveguides are given by the IEC 61000-4-20. Annex C of the IEC 61000-4-20 specifies immunity tests based on high-altitude electromagnetic pulses with a double exponential waveform. This waveform's shape is sufficiently defined by the rise time and the pulsewidth. The quality of its transmission within a waveguide can, thus, be expressed by the allowed variation of these parameters. However, other arbitrary signals cannot be reduced to just these characteristic parameters. In this paper, a method is described that offers the possibility to characterize the transmission quality of a TEM cell for arbitrary transient waveforms. It is based on the Pearson correlation coefficient of a so-called reference signal and the signals being measured within the test volume of a TEM cell. Both signals are measured simultaneously with identical field probes in order to be independent from the reproducibility of the signal generator. The signals are windowed and limited to include only the defining reflections and distortions. By means of this signal-dedicated validation procedure, the transmission quality of a TEM waveguide can be validated for an arbitrary transient waveform Index Terms-High-altitude electromagnetic pulses (HEMP), intentional electromagnetic interference (IEMI), signal dedicated verification (SiDeV), transverse electromagnetic (TEM) waveguide validation, transients.

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“…The tolerances for t rise and t fwhm correspond to a certain level of distortion of the wideband characteristics of the pulse in the FD [11].…”

Section: B Waveguide Validation In the Tdmentioning

confidence: 99%

Extension of the IEC 61000-4-20 Annex C to the Use of Arbitrary Transient Signals

Briest

Hamann

Garbe

et al. 2017

IEEE Trans. Electromagn. Compat.

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“…1 dargestellt. Die Eignung der Testumgebung für Einkopplungsuntersuchungen von UWB-Pulsen ist in (Zamow et al, 2008) untersucht worden.…”

Section: Einkopplungsuntersuchungenunclassified

Untersuchung der Einkopplungen von UWB-Pulsen auf Funksysteme im 2,4-GHz-ISM-Band

Klunder

Haseborg

2010

Adv. Radio Sci.

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Abstract. Dieser Bericht fasst die durchgeführten Messungen zur Abschätzung möglicher Kopplung elektromagnetischer Energie ausgehend von abgestrahlten UWB-Pulsen auf Funkübertragungssysteme im 2,4-GHz-ISM-Band zusammen. Dabei wird genauer auf die sogenannte Frontdoor- und Backdoorkopplung eingegangen. Während für die Abschätzung der Frontdoorkopplung generische PCB-Antennen untersucht wurden, sind für die Backdoorkopplung Standard-USB-Funkmodule zum Einsatz gekommen. Es wird im Gesamten eine Abschätzung gegeben, inwieweit UWB-Pulse Funkübertragungssysteme beeinflussen können. Die durchgeführten Messungen wurden mit Hilfe einer GTEM-Zelle in Verbindung mit dem UWB-Pulsgenerator PBG3 der Firma Kentech durchgeführt. Weiterhin sind die Auswirkungen von UWB-Pulsen auf ein reales Funkübertragungssystem im 2,4-GHz-ISM-Band untersucht worden.

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Applicability of the IEC 61000-4-20 for transient testing with UWB signals

Cited by 2 publications

References 2 publications

Extension of the IEC 61000-4-20 Annex C to the Use of Arbitrary Transient Signals

Extension of the IEC 61000-4-20 Annex C to the Use of Arbitrary Transient Signals

Untersuchung der Einkopplungen von UWB-Pulsen auf Funksysteme im 2,4-GHz-ISM-Band

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