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optimization problem in ADS2005

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joakim

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When I try to optimize some parameter values in a subcircuit sometimes the optimizer works, for example if I try to optimize 2 parameters, but if I try 2 other parameters with/without the former ones, the optimizer fails, and says that no inproved solution can be found.
Any ideas how I can solve this or advices?
Maybe the problem is because I try to optimize in a mixer circuit and the optimizer becomes confused about the different freqs used?
I have also noted that the optimizer sometimes works if the solution method is changed, which is the most probably solver to work?

/Joakim
 

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