Richard Harrison wrote:
"Thus, although a reflected wave is present in the length l1 because of
reflection from ZL, there is no reflected wave on the generator side of
the stub line as a result of the cancellation of the two reflected
waves."

What? "Cancellation of the two reflected waves"???
Some of the gurus here say that cannot happen,
that there is never any interaction between waves.
--
73, Cecil http://www.w5dxp.com