Copyright: 1996 - 2024
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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My Hobby Website:
SNR vs SWR - RF Cafe Forums
RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media
platforms dominating public commenting venues. RF Cafe Forums began sometime around
August of 2003 and was quite well-attended for many years. By 2010, Facebook and
Twitter were overwhelmingly dominating online personal interaction, and RF Cafe
Forums activity dropped off precipitously. If the folks at
phpBB would release a version with integrated
sign-in from the major social media platforms, I would resurrect the RF Cafe Forums,
but until then it is probably not worth the effort. Regardless, there are still
lots of great posts in the archive that ware worth looking at.
Below are the old forum threads, including responses to the original posts.
|-- Amateur Radio
Gripes & Humor
-- CAE, CAD, &
Test & Measurement
Post subject: SNR vs SWR Posted: Wed Nov 30, 2005 8:44 am
Joined: Wed Nov 30, 2005 8:22 am
can you help me???
I find some information
and/or reference about the relation SNR vs SWR in TX system.
tanks for the help!!
Post subject: Posted:
Tue Dec 20, 2005 1:12 am
Joined: Mon Jun
27, 2005 2:02 pm
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!