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how to design edge coupled strip line bandpass filters(4-5,5-6,6-7 & 7-8GHz)

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srujan1708

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please help me

I calculated Zoe, Zoo. Then using linecalc (ADS), I calculated Width, Spacing, Length for coupled strip-line (SCLIN).
Using these values I am getting good results in Schematic. But with momemtum (Layout) I am not getting.

Then I chop all Lengths by 0.165xb (b-thickness of substrate or ground plane spacing in strip line, i taken 40mil)[G L Matthai text book]. then also i am not getting.
 

Of course you will not get same result with Momentum;
But if discrepancies are large, you may have e problem in your settings for Momentum.
Check the substrate definition.
Why don't you design your circuit in schematic using design guide?
 

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