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simulations with frequency dependant dielectric constants

Question asked by DIETER_CLUSE on Jan 9, 2007
Latest reply on Jan 9, 2007 by ABOMPA
I want to design a lowpass microstrip filter (f0= 3-4GHz) with defined attenuation poles (3 poles at 6.6GHz, 8.3GHz and 10.2GHz). By doing this with PCB materials with frequency dependant dielectric constants I fail to meet all notches with one calculation.
Is there a way to define Er as a function of FREQ in the EQUATION-block?  

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