Cecil, W5DXP wrote:
"Let`s look at the following system with two sources,"

Is this tempest about creation of an oppositely phased wave to cancel a
reflection?

A way to avoid reflected waves within a waveguide is mentioned by Terman
on page 148 of his 1955 edition:

"Create a reflected wave near the load that is equal in magnitude but
opposite in phase from the wave reflected by the load; in this way the
two reflected waves cancel each other."

"Some of these (matching arrangements) are analogous to the impedance
matching arrangements employed in transmission lines (described in Sec.
4-11) while others are unique to waveguides."

Best regards, Richard Harrison, KB5WZI

On Wed, 16 Jul 2003 12:04:17 -0500 (CDT),
(Richard Harrison) wrote:

Is this tempest about creation of an oppositely phased wave to cancel a
reflection?

Richard, you are spitting into the wind. Only Cecil would call that
reflection a fresh ocean mist. :-)

73's
Richard Clark, KB7QHC

Richard Harrison wrote:
"Create a reflected wave near the load that is equal in magnitude but
opposite in phase from the wave reflected by the load; in this way the
two reflected waves cancel each other."

Unfortunately, he didn't say what happens to the intrinsic energy
necessary for those two canceled waves to have existed in the first
place. The question is: At the moment that two waves are canceled,
do they give up their intrinsic energy components? Or, as in the sour
grapes tale, were they never associated with any intrinsic energy to
begin with?
--
73, Cecil http://www.qsl.net/w5dxp



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