Use AD834 for a wideband analog multiplier

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

attachments.zip
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