James Bond
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Hi all,
I am simulating the vco, polyphase and passive mixer together.
I have an output amplitude 1.75Vpp from vco, after the polyphase filter, it becomes 800mVpp. But when I connect this output to mixer, it becomes 340mVpp which is not enough to drive mixer.
It seems that a isolation amplifier would be useful placed between polyphase filter and mixer. But I am not sure how to build this kind of large input signal and high speed amplifier or I should use just a LC tank network to amplify the signal?
Could you please give me some suggestions? Thank you vey much.
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