John_li
Full Member level 5
Hi friends,
As we know, Ga,Gp,Gt are the gain of power.Then if we want to design two stages PA,normal use driving amplifier+PA,not 2 stages of driving amplifier.My qustion: if the input level is 0 dBm,design>24dBm output level
Why use driving amplifier(16dB)+PA(8dB),total is 24dB gain?Not use two stages of driving amplifier(12dB/stage)-----also gain 24dB?
Thanks,
As we know, Ga,Gp,Gt are the gain of power.Then if we want to design two stages PA,normal use driving amplifier+PA,not 2 stages of driving amplifier.My qustion: if the input level is 0 dBm,design>24dBm output level
Why use driving amplifier(16dB)+PA(8dB),total is 24dB gain?Not use two stages of driving amplifier(12dB/stage)-----also gain 24dB?
Thanks,