A round-robin test on effectiveness of a VHF LISN for radiated emission measurements

Miyazaki, Chiharu; Yamaguchi, Masanori; Endo, K.; Muramatsu, Hidenori; Kawano, J.

doi:10.1109/isemc.2011.6038345

Cited by 10 publications

(2 citation statements)

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“…Indeed, an international inter-laboratory comparison shows that the maximum standard deviation of radiated emission measurement can be over 9 dB in the frequency range from 30 MHz to 150 MHz [35]. This uncertainty can be reduced by using common mode absorption devices (CMADs) [36], [37] or very-high-frequency (VHF) 1 LISNs [38]. In some cases [39], VHF-LISNs worked better than CMADs due to the fact that CMAD can suppress the CM noise only.…”

Section: Mode Conversion Due To Terminal Networkmentioning

confidence: 99%

“…To account for possible mode conversion during the measurement it was shown that unbalanced VHF-LISNs can both control measurement uncertainty and give worst-case prediction of real-world emissions from a power line communication system [28]. A comprehensive experimental investigation on the 1 Very high frequency LISNs mean the upper working frequency of LISNs is extended from 30 MHz to 300 MHz [38].…”

Section: Mode Conversion Due To Terminal Networkmentioning

confidence: 99%

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Review of Mode Conversion and Modal Analysis in Electromagnetic Compatibility

Illiano,

Wu,

Grassi

et al. 2024

IEEE Access

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Undesired conversion between common-mode (CM) and differential-mode (DM) noise often occurs in modern electronic and electrical systems, posing challenges in terms of Electromagnetic Compatibility (EMC). Modal analysis represents a crucial tool in EMC investigation and provides insight into the mechanism underlying mode conversion. By inspecting CM and DM behaviors and their interconversion, it allows for understanding of conducted emission propagation mechanisms, drives electromagnetic interference (EMI) filter design towards optimal/tailored solutions, and enables the possibility to identify the main contributors to the radiated emission phenomenon. This paper offers a comprehensive review of mathematical methodologies and modelling strategies for EMC-oriented modal analysis, with particular emphasis on mode conversion phenomena. To this end, modal decomposition techniques and standard parameters for quantifying mode conversion are summarized and compared. Additionally, the paper provides an overview and in-depth discussion of different scenarios and test cases in which mode conversion occurs, with the final goal to achieve a systematic comprehension of its root causes and consequences within power and communication systems. Eventually, a survey of circuit modelling approaches for mode conversion is presented, offering insights into addressing this phenomenon effectively.

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