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Alright, that looks like plenty to get my teeth into :). Thanks. One last question, if I may. I've seen it suggested that a op-amp in inverting summing configuration could be used as a active combiner. I haven't seen it in any literature, which implies it's a really stupid idea. Is this just...
Dimly, yes I am aware. Thanks for checking, though. I'm given to understand that adding an amplifier after it would restore the gain but not the signal to noise ratio? Or is 'attenuation equals loss of noise figure' rule only for 'real' (resistive) loss?
Alright, thanks for the advice. I have to say that I'm not confident I could design one from scratch and expect it to work properly with my current level of understanding. Don't suppose you'd know of a comprehensive theory document or simulation software or something like that?
Aaaand I just realised that I forgot to mention that this is a PCB mounted circuit. The only 16 way splitter/combiners they make are connectorised.
Also, by 'doing it yourself', do you mean cascaded ADP-2-1W+ that I mentioned in the original post? There's no weird gotcha for why that wouldn't...
I'm trying to figure out the best way to get the vector sum of 16 different signals of different phases (and probably multiple frequencies as well). My primary concern is minimising changes to the signal phase, followed by noise figure and then gain. Is there a accepted way to do this? Either...
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