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Phase noise

Leeson's equation

$L\{\Delta\omega\}=10\log\left[ \frac{2FkT}{P_{sig}}\left\{ 1+\left( \frac{\omega_0}{2Q\Delta \omega} \right)^2 \right\} \left(1+\frac{\Delta \omega_{1/f^3}}{|\Delta \omega|} \right)\right]$