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I am building solution on top of this design. I am planing to use ideal diodes with op-amp with much higher bandwidth than 30MHz and slew rate better than 145V/us. I think this is the potential solution to remove voltage drop across the diodes and then amplify it.


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What is interesting is I have the exact schematic from Beric Dunn's analyzer using the Si5351a chip. When I use a the germanium diodes, I get a flat 1.0 reading across the bands with a 50 Ohm resistor load as expected. When I try just replacing the germanium with Schottky (1N5711) I get an SWR of around 3 that slowly creeps up to 4. I would really like to ...


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