Transistor RF Matching
Transistor RF Matching
by Ken G3LVP Wed May 20, 2015 1:02 pm
Hi Harry,
On your page 'Transistor RF Impedance Matching' you say that L1 balances out the capacitive component of the second stage (-j1.0 in the case of the 2N6082 that I'm using). For my design frequency (70 MHz) it seems that Xl is so small (.002uH) that it can be disregarded (if my sums are correct).
However you go on to say that L1 is calculated by multiplying the 'real' part of the transistor I/P Z (0.8 Ohms) by Q (10).
Which is correct?
73..
Ken
G3LVP
p.s. I hope that I've not sent this twice, I lost it first time by pressing return in preview & can't find where it went.
On your page 'Transistor RF Impedance Matching' you say that L1 balances out the capacitive component of the second stage (-j1.0 in the case of the 2N6082 that I'm using). For my design frequency (70 MHz) it seems that Xl is so small (.002uH) that it can be disregarded (if my sums are correct).
However you go on to say that L1 is calculated by multiplying the 'real' part of the transistor I/P Z (0.8 Ohms) by Q (10).
Which is correct?
73..
Ken
G3LVP
p.s. I hope that I've not sent this twice, I lost it first time by pressing return in preview & can't find where it went.
Ken G3LVP- Guest
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