The easiest is to use the Smith chart.
Plot the olad impedance as series equivalents.
Working from the load towards the generator, add series inductance along the
constant impedance circle so the new point
lies on the constant admittance circle
that goes through the centre of the chart, or 50+j0 ohms.
Then add parallel capacitance along the constant admittance circle until the
point reaches the center.
The solution is, assuming your impedance values are expressed as series
equivalents:
Start 25,67+j18.68 ohms
Series inductor reactance 7.2 ohms or 305 nH
Parallel capacitance reactance 50 ohms or 844 pF
Goal 50+j0 ohms
Hope this helps-
73/
Karl-Arne
SM0AOM
----Ursprungligt meddelande----
Från : dickw1ksz@gmail.com
Datum : 2019-01-31 - 21:57 (CEST)
Till : Amps@contesting.com
Ämne : [Amps] Impedance Match Calculator
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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