Dick,
that's really easy, and there are many calculators online that will
solve this. You can find them via your favorite search engine.
I tested the first few that came up. The very first one my search engine
found is this:
https://www.analog.com/en/design-center/interactive-design-tools/rf-impedance-matching-calculator.html
and it works fine. It says you need 832pF in parallel with the 50 ohm
side, and 270nH in series with your load. In practice an 820pF
capacitor is close enough, and 270nH happens to a standard value, so
it's easy to find if you want to use a ready-made surface-mount
inductor, for example.
You gave both the series and parallel values of impedance. You need only
one of those pairs to do the calculations. Most commonly the series
values. The other pair is redundant information. Maybe this confused you.
This page gives more alternatives, and for the basic low-pass matching
network returns the same values as the first one:
https://home.sandiego.edu/%7Eekim/e194rfs01/jwmatcher/matcher2.html
This one is nice too, very easy to use, and of course also returns the
same values:
https://leleivre.com/rf_lcmatch.html
There are many more.
Manfred
I did a quick Google on this,
but didn't see exactly what I
needed.
I want to match a load with
the following characteristics:
Rs=25.67
Rp=39.26
Xs=18.68
Xp=53.96
To a 50 ohm source at a fixed
frequency of 3.725 Mhz.
Can someone point me to a
calculator that will give L & C
values I will need ?
Tnx, Dick, W1KSZ
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