mhtplsh
Full Member level 3
opposite result
I designed 2 stage small signal amplifier 88~108Mhz with appcad, quicksmith & serenade 8.7.
I assembled it & while testing on VNA8712C i got exactly opposite result regarding return loss result.
In the simulator if the coupling capacitor value between the two stage is reduced,then the return loss improves.
But while testing on VNA exectly the opposite happens, i.e. while reducing the capacitor value, the return loss value is also reduced.
waiting for suggestions.
I designed 2 stage small signal amplifier 88~108Mhz with appcad, quicksmith & serenade 8.7.
I assembled it & while testing on VNA8712C i got exactly opposite result regarding return loss result.
In the simulator if the coupling capacitor value between the two stage is reduced,then the return loss improves.
But while testing on VNA exectly the opposite happens, i.e. while reducing the capacitor value, the return loss value is also reduced.
waiting for suggestions.