Dig further back into the matching system. In our modern transceivers, the
match begins at the collector / drain of the output devices (the PA).
There is typically no attempt to do conjugation at that point, just bring
the impedance from the (generally) far left of the Smith Chart to something
significantly closer to the center of the chart. This must be accomplished
in a broadband manner.
Dave - W?LEV
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On Sat, Jan 11, 2020 at 2:05 PM W5DXP <w5dxp@...> wrote:
Hans, DJ7BA wrote: Anyone interested in more detail of (b), is invited
to ask me for the derivation of (b).
Hans, because of real world losses, in a system with only one matching
network, instead of a lossless system-wide conjugate match we can only have
a conjugate match at a single reference plane. In most amateur systems, the
matching plane is located at the Z0-match at the tuner input. My question
is: Given that maximum power transfer occurs at the conjugate match
reference plane, in a typical amateur radio system, where should that
matching plane be located? (1) At the tuner input, (2) At the antenna
feedpoint, (3) Somewhere else
--
*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*
