"Noise figures"

Noise figures

noisyVamp

\begin{equation} F=\frac{\frac{4 R_{1}^{2} R_{2} T k}{\left(R_{1} + R_{2}\right)^{2}} + \frac{4 R_{1} R_{2}^{2} T k}{\left(R_{1} + R_{2}\right)^{2}} + 4 R_{s} T k + \frac{S_{i} \left(R_{1} R_{2} + R_{1} R_{s} + R_{2} R_{s}\right)^{2}}{\left(R_{1} + R_{2}\right)^{2}} + S_{v}}{4 R_{s} T k} \end{equation}

noisyVampSimple

\begin{equation} F=\frac{\frac{4 R_{1} R_{2} T k}{R_{1} + R_{2}} + 4 R_{s} T k + \frac{S_{i} \left(R_{1} R_{2} + R_{1} R_{s} + R_{2} R_{s}\right)^{2}}{\left(R_{1} + R_{2}\right)^{2}} + S_{v}}{4 R_{s} T k} \end{equation}

Comparison

Both models have the same noise figure:

\begin{equation} F_{noisyVamp} - F_{noisyVampSimple}=0 \end{equation}

Go to index

SLiCAP: Symbolic Linear Circuit Analysis Program, Version 1.5.0 © 2009-2023 SLiCAP development team

For documentation, examples, support, updates and courses please visit: analog-electronics.tudelft.nl

Last project update: 2023-04-08 19:32:27