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Flexible Noise Analysis in circuits with multiple RF Signal pathes

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Hi all,

I'm currently working on the S-Parameter verification of a pretty big RF block that features one input and multiple

output ports. The input signal can be switched to different outputs, or even to multiple outputs using configuration bits.

S-Parameter simulations are fine but I have a problem with the noise part of the S-Parameter simulation.

The noise simulation is performed only between one output and one input port, which in principle is ok with me.

However I want to change the output port of the noise analysis with the configuration of my system, because the

output port can change with my signal path configuration.

I have already tried using a design variable outputport set to /PORT2 or /PORT3 and entered VAR("outputport")

and DESVAR("outputport") into the output port field of the sp-noise analysis. Unfortunatly this is not working.

Is there a possibility to vary the output port setting of the noise analysis ?

Best Regards

Andi


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