help! LNA post-layout simulation problem
时间：04-08
整理：3721RD
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I made a 2.4G LNA with pre-layout simulation NF of 1.9dB using SPECTRERF, but it increased to nearly 4dB when did post-layout simulation.
I have optimized the layout several times, and NF still was nearly 3.9dB, what is the problem most likely?
top thick metal was used to pass RF single, and the RF path was as short as possible. all models used in pre-layout were from PDK, no ideal element.
many thanks!
I have optimized the layout several times, and NF still was nearly 3.9dB, what is the problem most likely?
top thick metal was used to pass RF single, and the RF path was as short as possible. all models used in pre-layout were from PDK, no ideal element.
many thanks!
The noise model of the PDK parasitic components can be wrong.
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