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Slab Line Filter in MFilter

Question asked by JKOUZO on Mar 24, 2006
Latest reply on Apr 4, 2006 by JKOUZO
Most of my work uses slab line designs.
I have had problems that I have worked around but now I am at a standstill. HELP

The combline design uses an air dielectric but M-Filter insists I use a substrate from the library none of which use air. If I try to add a new substrate I Get an READ ONLY error message. I enter a new substrate with each task.

Now comes 2005. I am designing a 900 to 906 MHz BP filter with reasonable values and the dimentions in the equation window are insane. The graph seems to produce a reasonable response but spacings llike 0.0023. I have set the default units to mils.
Also I can not find what substrate is being used.

Sorry for the headache.

Jack Kouzoujian  

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