palaniappan chellappan wrote:
If current and voltage
are in phase, there is no reflection . am i correct ?

No. Assuming Z0 is purely resistive, here's what it
takes to make your statement true:

If current and voltage are in phase *at every point*
up and down a transmission line, there is no reflection.

Just to be sure we have cause and effect straight, the
statement should probably be:

Assuming the presence of a signal, if there are no
reflections on a purely resistive Z0 transmission line,
the current and voltage will be in phase at every point
on the transmission line.
--
73, Cecil http://www.qsl.net/w5dxp