natnoraa
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Posts: 6
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Hi guys,
I have a question. Given a simple bias circuit of a nmos, I would like to check the PAE.
Am running Cadence Virtuoso Spectre and the result is that a simple class C PA gives me lower PAE than Class AB or even Class A? Does anyone know the reason for it?
I have already made sure the power at the 2nd, 3rd harmonics are well below -20dBm and from the PSS function, i checked on PAE and selected the fundamental frequency in which i would like to measure its PAE.
I have also used a simple LC oscillator tank to make sure i've filtered out all the harmonics leaving only the fundamental.
Any help would be appreciated. Thanks!
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