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Question about the "baseband" in Loadpull simulation

Question asked by neogsj on Jun 12, 2012
Latest reply on Jul 10, 2012 by aehoward

I have some questions about the definition "base band". 

I am now using the load pull simulation in ADS2011 by choosing the design from design guide.
In one tone and two tone source/load pull simulation, there are parameters "Z_Src_Baseband" or "Z_Load_Baseband" described as "Impedance at baseband frequencies"

What's the definition of baseband and baseband frequency?
How does this parameter effect the simulation result?
What value I should use?

Thank you.