Hello,?
Allison an all
Do you think that I can find the characteristics of my filters (45R15AZ and 20J26) by applying the method of diagram 5 with a NanoVNA.
I think I put 2* 2K variable resistor? and 2 * 0/ 10pf variable capacitors and look for the best response curve.? --> 2 pole filter
Then depends on the values taken:
Is the acouplement point (black dot) related to these values? Because no dot on my filters.
If I want a filter 4 poles? ---> I can connect 2 filters on the side where these have identical resistance and capacitance following the measurement. (Basically what is the method to align the 2 monolytic filters)
cdt
Gerard