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Please help - PAE calculation

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katykaty03

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Hi all,
I found a datasheet stated: PLoad(avg)=8W, Gain=14dB, Vds=28V, Vdq=170mA, PAE=40%, WCDMA mode
Would you help me on the calculation how to obtain PAE 40%?
**broken link removed**

thanks!
 

As you know PAE=((Pout-Pin)/Pdc)x100%. Pdc=Vds x I but you don't know "I" ,cause they give you only quiescent current Idq. So from your parameters you can only obtain "I".
I=(Pout-Pin)/(PAEx100xVds)
 
Thank you! It's all because "I" is missing!. so i need to check I-V curve first
 

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