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How do you simulate differential s parameters using LSSP? (Read 85 times)

iVenky

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Posts: 101
Silicon Valley

How do you simulate differential s parameters using LSSP?
Mar 26^th, 2016, 6:58pm

I am trying to figure out the s-parameters of a push pull class B power amplifier, but the problem is that the input is differential. I am allowed to enter only one input port on the LSSP window in Cadence Virtuoso when I actually have two ports at the input (one for positive terminal and other one for negative terminal which as a phase difference of 180 with respect to the positive terminal). How do you plot differential s-parameters in this case?
I have attached the schematic for better understanding.

class_b_amplifier.JPG

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Ken Kundert Global Moderator Offline Posts: 2384 Silicon Valley	Re: How do you simulate differential s parameters using LSSP? Reply #1 - Mar 26^th, 2016, 7:45pm See Measuring S-Parameters of a Differential Mixer. -Ken
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iVenky Senior Member Offline Posts: 101 Silicon Valley	Re: How do you simulate differential s parameters using LSSP? Reply #2 - Mar 30^th, 2016, 12:02am Hi Ken, Thank you very much. Didn't actually think that you would reply I have enjoyed reading up your stuffs I used a balun at the input to solve this issue so that I had only one input port. Thanks
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Ken Kundert Global Moderator Offline Posts: 2384 Silicon Valley	Re: How do you simulate differential s parameters using LSSP? Reply #3 - Mar 30^th, 2016, 12:43am Thanks. I like to promote the ideal balun. I find that many people do not know about them, or if they do, they don't use them as much as they should. I find life is just better with baluns. -Ken
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