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HIGH FREQUENCY ADDER(analog)

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plc

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frequency adder

hello every1!
i am looking for an adder circuit that can work at upto 70MHz. any clues?
 

bjt adder

Beware of lead inductance and stray capacitance...
 

high frequency analog adder

thanks for ur reply. i am looking for an op amp adder that can add two weak signals e.g from antenna.
 

mmm..

You know that before processing any sygnal after the antanna you need to filter your desired signal, dont you? if you wan to use op amp, just look for one who can work in your frequency or hihger, apply a filter after the antenna and then use your circuit with op amp.

cheers

Sal
 

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