Actually Jim, virtual shorts etc. act the same for pulse systems as for
CW systems. The classic case is the rotating joint in radar systems.
Alan


But isn't that a number of cycles of RF?
Enough to reach 'steady-state'?

When I read the word 'pulse', I think rising edge, flat top,
falling edge, and the virtual short is quite different than
a real short for this signal.

...Keith

I see your point. But as a CW signal can be thought of as series of
rectangular pulses,
then the effect of a virtual short/open/whatever, should be the same.
For a such a series,
the resultant signal at any point in the TL is of course quite different
from a single pulse. But I still can't see that a virtual short would be
different to a real short.
Alan