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Optimization goals

Question asked by ANDREAS@MIMOON on Nov 18, 2008
Latest reply on Nov 30, 2008 by ANDREAS@MIMOON

Another question from my side... ;D

I have a circuit consisting of 2 bandpass filters and 2 LNAs.


Between each BPF and LNA, resp. LNA nad BPF, there are some matching components. The problem is, that at the output of LNA2 the S21 parameter dithers within a range of 6.5dB.

How can I tell Genesys, that a maximum deviation of about +/- 0.75dB is allowed?

I've tried to set two goals for S21, says db(S[2,1])>22 and the other one says dB(S[2,1])<23.5.

But what I actually want is, that S21 should be maximized, but should stay within a range of 1.5dB

Any ideas, how to solve this problem?

best regards