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Thanks for your reply. Actually I am seeking some circuit implementations of specially LNA (and Mixer) to reach such low NF specs for the applications.
I formed a top schematic that includes four op-amps. op-amps are designed but in top schematic cascade transistors go to triode and loading effect made some issues. As you can see in pictures two transistors always go to triode in all of op-amps and I couldn't tune them to operate properly.
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