Richard Harrison wrote:
Gene Fuller wrote:
"Waves go into the interface (plane, discontinuity, whatever) and come
back out."

A conductive plane produces a reflection and a phase reversal.

A plane drawn through the junction of two different
Z0 feedlines also produces a partial reflection.
The reflection coefficient at an impedance discontinuity
is (Z02-Z01)/(Z02+Z01).
--
73, Cecil http://www.w5dxp.com