Copyright: 1996 - 2024
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
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question about balun? - RF Cafe Forums
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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: question about balun? Posted: Sat Sep 12, 2009
Joined: Sun Jun 07, 2009 9:14 am
1.Who know the balun(T2&T3) in following picture is
1:4 or 1:9?
2.If the balun(T2&T3) is 1:4,then what is
the different between this balun and another balun(T4&T5) as following
subject: Re: question about balun?Posted: Wed Sep 16, 2009 12:18 pm
Joined: Thu Mar 30, 2006 9:01 am
Based on the cascode transistor configuration,
I'd say those are coaxial implementations of 3dB hybrid couplers for
the input and output. Length differences for input/output are for bandwidth/tuning
Post subject: Re: question about
balun?Posted: Thu Sep 17, 2009 8:09 am
Sun Jun 07, 2009 9:14 am
Thank Jose Arrina.
know the impedance transform of the balun is 1:4 or 1:9?