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Gain in simulation for BFG97 transistor not as same as practical circuit!!!

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danfoss

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hi all
i finally simulate VHF class a amplifier using ADS and the transistor is BFG97.
i used its model from NXP and imported it in ADS as netlist file.
in simulation i got gain result almost same as S2P file @ VCE=10V,IC=70mA, i got about 36 dB gain with input and output
impedance matching. i have make it as practical circuit but i only got 16 dB :(
any body can help please!!??
i appriciate your help, thank you so much.
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Your Layout is not convenient/proper..Components are wrong ( ferrite ring inductors..) There is No GND vias etc.

Also, you have to study on Simulations of RF Circuit because transient simulations are never used to predict the circuit behavior in RF.
Study on s-parameters and HB simulation techniques.When you finish, you will understand the errors you made..
 

ok thank you for giving advices.
please is there good source to study s-parameters and HB simulation techniques?
 

ok thank you for giving advices.
please is there good source to study s-parameters and HB simulation techniques?

ADS Manuals.. There are lot of information about..
Also, Pozar's book will help..
 

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