AnsweredAssumed Answered

Use AD834 for a wideband analog multiplier

Question asked by Yung-Cheng on Jul 16, 2015
Latest reply on Jul 20, 2015 by Yung-Cheng

Dear all


My circuit design is followed analog devices suggestion(see as attachment 1 Fig.13)


And It said its bandwidth is about 480MHz.


What I need is a analog multiplier which transfer function W-output=Input1(t)*Input2(t).


And the bandwidth over 100MHz.


But I test the circuit as attachment and the result is showing also in attachments.


The both input is sin(w*t) and the output would be expect be sin(w*t)^2.


But its frequency response seems not enough for my acquirement.


And the output have a phase delay to my input signal when input signal over few MHz.


So Is there improved way to my circuit to solve my problem?


Thanks all