Assuredly Effective Filters

Schlicke, Heinz M.

doi:10.1109/temc.1976.303479

Cited by 14 publications

(2 citation statements)

References 6 publications

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“…The insertion loss of the filter, which typical measurement setup is depicted in Fig. 1, could be calculated by using the cascade parameters [1] and [2]:…”

Section: Introductionmentioning

confidence: 99%

Modification of approximate worst-case measurement system for EMI filters

Dřínovský

Kejik

Ruzek

et al. 2010

15th Conference on Microwave Techniques COMITE 2010

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This paper deals with the approximate worst-case test method for testing the insertion loss of the EMI filters. The systems with 0.1 Ω and 100 Ω impedances are usually used for this testing. These measuring systems are required by the international CISPR 17 standard. The main disadvantage of this system is the 0.1 Ω impedance transformer. The dynamic range for the transformation from the 50 Ω, which is most common matched impedance for the measurement setups, to 0.1 Ω is very large. It is no easy to produce such transformers with this high impedance transformation ratio. These transformers have usually very narrow bandwidth. This paper discusses the alternative system with 1 Ω and 100 Ω impedances. The performance of these systems was tested on several filters and the obtained data are depicted, too. The performance comparison of several filters in several systems is also included. The performance of alternate worst-case system is discussed in the conclusion.

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“…The insertion loss of the filter, which typical measurement setup is depicted in Fig. 1, could be calculated by using the cascade parameters [1] and [2]:…”

Section: Introductionmentioning

confidence: 99%

Modification of approximate worst-case measurement system for EMI filters

Dřínovský

Kejik

Ruzek

et al. 2010

15th Conference on Microwave Techniques COMITE 2010

View full text Add to dashboard Cite

show abstract

“…Traditionally, power electronic low-pass filters are passive, lumped element filters, with the disadvantages of a load dependent response [3], [4], and full nominal power that have to be transferred at low frequency, with only a fraction blocked at high frequency, decreasing power to mass ratio. Another aspect of power electronic EMC is conducted interference propagating along interconnects, often the underlying cause of generated differential mode electromagnetic interference (EMI) [5]- [7].…”

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confidence: 99%

Power electronic interconnects: skin- and Proximity-Effect-based frequency Selective-Multipath propagation

Wyk¹,

Cronje²,

Campbell

et al. 2005

IEEE Trans. Power Electron.

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Structural electromagnetic effects, attributed to the packaging and construction of power electronic converters, are often seen as detrimental and it is attempted to eliminate these "parasitics." This paper explores the utilization of some of these structural electromagnetic effects to achieve higher levels of functional integration in modules by obtaining low-pass filtering for various applications by controlling the material and geometry of selected interconnecting structures. Multipath propagation with frequency selective attenuation is one of the promising new technologies presented. Modeling and experimental results are given for a number of different cases showing promise for future integration into power electronic products as currently discussed in the literature. The conclusion reached from the research is that phenomena like the skin and proximity effect that are often considered as detrimental and to be avoided or minimized, can indeed be controlled and used to enhance the operation of power electronic systems.Index Terms-Low-pass filtering, multipath propagation, power electronic converters, proximity effect.

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Shielding effectiveness and electromagnetic protection

Graf

Vance

1988

IEEE Trans. Electromagn. Compat.

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Assuredly Effective Filters

Cited by 14 publications

References 6 publications

Modification of approximate worst-case measurement system for EMI filters

Modification of approximate worst-case measurement system for EMI filters

Power electronic interconnects: skin- and Proximity-Effect-based frequency Selective-Multipath propagation

Shielding effectiveness and electromagnetic protection

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