Chavdar,
?
I am sorry I forgot to mention another point. I can understand why you have been using Norton equivalent circuit for a prove how great works active small loop antenna in short current mode. The low resistive input of amplifier cancels the reactive influence of loop antenna and regardless what series arms in simulator are used - we will get flat ( frequency independent ) frequency response.
On other hand using Thevenin circuit it does not? prove the above said because you do not have a control mechanism allowing the source voltage to follow the frequency in acordance to Faraday' law of induced current. So, the frequency response is not "frequency flat" ( indepenent from frequency ) more but skewed down with the frequency increase.
My understanding has been usage of dummy aerial circuit with a receiver in our technical business always? ignores that applied test signal shall follow Faraday's law.?
?
?
Raphael?
