Tri-frequency Harmonic balance

Hi,

I am trying to optimize a PA that is supposed to work at three frequencies concurrently, providing some specified values of fundamental output power and PAE. I have tried to setup simulation as (partly) shown in the attachment. Through this setup, i want to optimize PA at 0.9, 2.14 and 2.6 GHz. But, this setting gives some error regarding failure to do cost evaluation.

Previously, I have done S-parameter optims at multiple frequencies, and that case was easier since the input is only a term with no frequency information. In contrast, in HB, the input v1tone source carries frequency information, and above that it should match to HB controller frequency. And that's why i am finding it difficult. Please suggest a remedy.

THANKS.

附图/附件

TriBandHB.PNG

This sort of optimization should be possible. However, it seems unlikely that you are going to get a single set of parameter values that will satisfy your goals at all three frequencies at the same time. You could add an external parameter sweep to sweep the frequency to one of the optimizations in the Amplifier DesignGuide (or at least use this as a starting point.) Otherwise, please contact Keysight EEsof Technical Support.

Thanks.

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