I have diode ring mixer to get a frequency of 27MHz after it has gone through the filter. It is followed by a common emitter transistor amplifier to amplify the signal out of the mixer and then filtered.
I was getting more gain by putting the amplifier at the end of the filter but I was told that is not good practice becuase of issues with noise.
I'm not sure if it has to due with impedance matching or the poorly design amplifier or I might need another amplifier.
I need to get this done for a class project but im having no luck and I still have to make the receiver . If I can't get enough gain I dont know if i'll still be able to demodulate the signal.
I hope someone can help. I would greatly appreciate it.
