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Re: Steve ugly-build LZ1AQ using MPS2222 sweeps uploaded to Photos


 

Hi Chavdar,
?
In your response to Lim's question about your proposed "dummy" network setup something is left without an explanation.
The conversion from Thevenin equivalent antenna model to Norton's requires that current source value is equal to? short current Isc = Voc / Za, assuming impedance of? load is low, where Voc is voltage of open source in Thevenin's model and Za - impedance of antenna.
Second point, using Norton's equivalent antenna model the current through the load will depend upon frequency because? L - inductance is in parallel with the load.?
Your recommendation has been the resistance of series arms should be? 10-20 times higher than expected input impedance of amplifier.
It means just about 30 - 60 ohms but on your "simulator" diagram are shown 1 Kohm resistors...
?
Regards,
?
Raphael
?
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