S parameter Simulation in Cadence Spectre RF

hi Guys,

can anybody tell me ?

when we do spp (S Parameter Simulation) in cadence Spectre RF and we have to plot S11, S12, S21 and S22. we have to choose dB20 with rectangular mode and
there is one more option below in that window to choose Power Gain P with dB10.


so, in Spectre RF when we plot S21 with dB20 . then is that mean Voltage Gain or Power Gain.

Please comment on it.

"spp" is not SP analysis. "spp" is a conversion program of HSPICE netlist to Spectre netlist.

And SP analysis is a function of Spectre not SpectreRF.

Study a definition of S21.
mag(S21) is sqrt(Pout/Pa).
Here Pa is an available power of input signal source.
Pout is a power delivered to load.

http://www.designers-guide.org/Forum...1205246365/3#3

"spp" is not SP analysis. "spp" is a conversion program of HSPICE netlist to Spectre netlist.

And SP analysis is a function of Spectre not SpectreRF.

Study a definition of S21.
mag(S21) is sqrt(Pout/Pa).
Here Pa is an available power of input signal source.
Pout is a power delivered to load.

http://www.designers-guide.org/Forum...1205246365/3#3