Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

LNA mixed-signal mode Noise Figure de-embeding

fred3991

Member level 1
Joined
Nov 26, 2020
Messages
38
Helped
0
Reputation
0
Reaction score
0
Trophy points
6
Activity points
662
Hi everyone,

I was wondering if it is possible to get NF from Single-ended to differential LNA measurements using Friis formula?

The complete measurement setup looks like this
1694009128565.png

I need to determine the NF for the LNA.


I have checked this solution using matlab.
(lets Assume that the NF for this LNA is 4 dB***)
1694009163047.png

Result in matlab
1694009379023.png



Is this approach acceptable and correct, or should other deembedding techniques be used to determine NF for LNA?


Thanks in advance for any information and ideas provided.
 
It's principally correct. Either single ended or differential, the Friis Equation is always identical.
I didn't check Matlab script, no idea.
 
It's principally correct. Either single ended or differential, the Friis Equation is always identical.
I didn't check Matlab script, no idea.
In matlab I just symbolically solved the NF of stage 2 (LNA) from Friis, and then solved this equation and got again the value of NF =4 dB
 

LaTeX Commands Quick-Menu:

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top