[Antennas] 450 Ohm Ladder Line
Pat W
[email protected]
2002年12月16日 08:10:54 -0800 (PST)
A point about using transformers(4:1 or 9:1, etc) at
the transmitter end of the feedline is that the losses
on the feedline are not changed. The reason is that the
SWR on the line is dependant on the impedance of the
load(the antenna). It is the impedance at the load
that determines the reflection coefficient and the SWR.
The characteristic impedance of the line determines
the transformation of the load impedance.
To change the losses on the line, a transformer must
be placed at the load end, not the input end.
Pat W0OPW
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