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PSS+PAC and PSS+PXF (Read 3815 times)

LSD New Member Offline Posts: 2	PSS+PAC and PSS+PXF Oct 28^th, 2010, 12:36am I simulated a LNA+Mixer's voltage conversion gain versus RF frequency,the large signal LO is 2.4GHz the small signal RF is 2.402GHz, when I use PSS+PAC the Gain is 24.45dB,but 20dB in PSS+PXF analyse,they are not equal,why?
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Ken Kundert Global Moderator Offline Posts: 2386 Silicon Valley	Re: PSS+PAC and PSS+PXF Reply #1 - Oct 28^th, 2010, 9:13am In PAC, the sideband is specified relative to the input, in PXF it is specified relative to the output, so in general you would not use the same sideband to simulate the same game term in the different analyses. What did you specify for the desired sideband in the two analyses? -Ken
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LSD

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Re: PSS+PAC and PSS+PXF
Reply #2 - Oct 28^th, 2010, 6:37pm

Ken Kundert wrote on Oct 28^th, 2010, 9:13am:

In PAC, the sideband is specified relative to the input, in PXF it is specified relative to the output, so in general you would not use the same sideband to simulate the same game term in the different analyses. What did you specify for the desired sideband in the two analyses?

-Ken

in PAC I set the "input frequency sweep range" as "single-point" at 2.402GHz.in PXF I set the "output frequency sweep range" as "single point" at 2MHz

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Ken Kundert Global Moderator Offline Posts: 2386 Silicon Valley	Re: PSS+PAC and PSS+PXF Reply #3 - Oct 28^th, 2010, 11:57pm And what sidebands are you observing? -Ken
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