Wyniki wyszukiwania - BazTech

1

Novel probe position for WBFC measurement method

Ruzek V., Drinovsky J., Zachar J.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 3a

220-224

EN

PCB with mounted IC can produce wide spectrum of harmful signals. One of the way, how to measure this disturbance is WBFC measurement method. This paper deals with numerical simulation of this method, especially about geometrical orientation of the measurement probe, and its influence to the measurement results with same conditions. The effect of changed boundary conditions and comparison between simulation in free space and closed Faraday cage is also simulated there.

PL

W artykule opisano zastosowanie metody WBFC (Workenbach Faraday Cage) do pomiaru zakłóceń wysokoczęstotliwościowych.

2

Models of Elements for EMI filters

Zachar J., Drinovsky J., Kejik Z., Ruzek V.

Przegląd Elektrotechniczny

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2011

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R. 87, nr 12a

205-208

EN

This paper deals with the modeling of the EMC filter in wide frequency range. The filter model is created from the models of the EMI filter components. At higher frequencies spurious elements of the components have large influence, which is necessary to describe in the models. EMI filter is composed of the LC low pass structures. Spurious elements of the individual components have a significant effect on the attenuation characteristics.

PL

Przedstawiono metody projektowania filtru EMI dla szerokiego zakresu częstotliwości. Punktem wyjścia są modele komponentów filtru. Przy wysokich częstotliwościach ważną rolę odgrywa uwzględnienie wpływów zjawisk pasożytniczych.

3

The choice of suitable fitness function for optimization spurious elements of EMI filters

Kejik Z., Drinovsky J., Ruzek V., Zachar J.

International Journal of Microelectronics and Computer Science

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2010

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Vol. 1, nr 2

211-217

EN

In Introduction are introduced main problems of measurement of EMI filter and is suggested that creation of model of EMI filter is useful. In this paper is shown model of EMI filter which is based on basic circuitry of the EMI filter. Reduced equivalent circuitries for EMI filter and his creation are also shown, because these circuitries are more suitable for usage in iteration optimization loop. The spurious elements of filter are searched with optimization. Participial swarm optimization is used. Two possibilities of fitness function calculations are shown, too. Results of both approaches are compared in this paper. Using fitness function with weight coefficients gives better results and this fitness function is used for optimization of the measured characteristics.