EMI filter simulator now has new features

25 September 2002 Circuit & System Protection

Simulation of differential mode circuits has been added to Murata's EMI filter simulator. New features include rapid differential transmission circuits for USB, IEEE-1394 and LVDS interfaces, ceramic capacitors, EMI three-terminal capacitors and chip ferrite beads.

Users can set up driver and receiver circuits automatically, just by selecting the transmission system. The simulation uses microstrip lines for the transmission lines, so single-signal and differential transmission lines can be simulated in conditions that are close to those on an actual circuit board.

The software also provides calculation of characteristic impedance with user-defined conditions. By varying transmission line conditions, users can simulate the delay characteristics and waveforms as functions of the changes in those transmission lines. Conversely, a user can remove the transmission lines from the calculation and see what changes the transmission lines cause.

The simulator is flexible, versatile and free. It can be downloaded from www.murata.com or is obtainable on CD.

For more information contact Avnet Kopp, 011 809 6100, [email protected], www.avnet.co.za

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