SNR vs SWR - RF Cafe Forums

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MR.D.
Post subject: SNR vs SWR Posted: Wed Nov 30, 2005 8:44 am

Lieutenant

Joined: Wed Nov 30, 2005 8:22 am
Posts: 2
Hello!!

can you help me???

I find some information and/or reference about the relation SNR vs SWR in TX system.

tanks for the help!!

Top

IR
Post subject: Posted: Tue Dec 20, 2005 1:12 am

Site Admin

Joined: Mon Jun 27, 2005 2:02 pm
Posts: 373
Location: Germany
Hello Mr.D;

Actually there is no real connection betweem SNR and SWR in Tx systems. Of course that the SWR should be good in order to avoid mismatches and power losses which can cost you in power consumption and siye. But there is a strong relation between these parameters in Rx systems. The best example is by doing the matching of an LNA to Gopt (Input matching) in order acheive the minimal NF. Also when matching is done between each stage to decrease the return loss to the minimum so that you will achieve a lower insertion loss and a better SNR.

Hope this helps!

_________________
Best regards,

- IR

Posted 11/12/2012