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Copyright: 1996 - 2024
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    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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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!

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Best regards,

- IR



Posted  11/12/2012
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