On Jun 10, 4:52*pm, K1TTT wrote:

but reflection coefficients and the the computation of forward
and reflected voltages, currents and powers are waveshape
independant.

only as long as the loads are perfectly resistive and linear. *real
loads often change impedance with frequency and so distort the
reflection of complex waveforms. *use a scope with a good risetime
and a decent fast rise time pulse and you'll see it.

It can be very close, though, if the system is designed/optimized
properly.

Below is a link leading to the r-f pulse measurement of a UHF TV
broadcast antenna system that I made as an RCA field engineer some 35
years ago. The incident and reflected waveforms are very similar.

The Z-match of this antenna was optimized to the transmission line
using a variable transformer at the input to the antenna, which
antenna was installed atop a ~ 1,500 foot tower (note the ~3 µs round
trip for the reflection, at ~492 feet/µs).

The H.A.D. of this sin^2 pulse denotes an r-f bandwidth approximately
as great as can be carried by a 6 MHz analog US TV channel.

http://i62.photobucket.com/albums/h8...easurement.gif

RF