Does NFmin in cascode LNA depend on the negative feedback inductance?

anhnha · Feb 19, 2014

Hi,
This is a cascode LNA. Please help me with the question in picture. Thank you.

attachment.php?attachmentid=66772&stc=1&d=1392802595.jpg

berkeman · Feb 19, 2014

What are your thoughts on the question? Is this for school?

anhnha · Feb 19, 2014

No, I am designing a LNA not a homework.

I read some books and papers saying that NFmin in two cases are equal. However, I would like to understand clearly why and read a decent proof.
Do you have ideal how to prove that?
Thanks.

Does NFmin in cascode LNA depend on the negative feedback inductance?

Attachments

VFD for powering a car lift

Wireless Charging

Interpreting VIA PCB characteristics through TDR and TDT

Running older induction motors on VFDs

Induced EMF: specific velocity and track length

Interpreting FEXT NEXT crosstalk pattern into pcb trace geometry

Extracting fixture S-params by length difference

Understanding the fixture deembeding method being reccomended

Exciting orthogonal modes in dielectric resonator

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

Does NFmin in cascode LNA depend on the negative feedback inductance?

Attachments

Similar threads