View Single Post
  #2   Report Post  
Old July 10th 03, 06:12 PM
Jim Kelley
 
Posts: n/a
Default



W5DXP wrote:

Jim Kelley wrote:

Well, I've already provided the quote from: "Fields and Waves in
Communication Electronics", by Ramo, Whinnery, and Van Duzer.



The topic of converstaion was: Poynting Vector Energy Anaylsis of An
Impedance Discontinuity.



Yes it was. So what happens to the reflected power Poynting Vector
(that the above reference says exists) when it encounters the
impedance discontinuity?

100W source--50 ohm feedline--+--1/2WL 150 ohm feedline--50 ohm load

The reflected power Poynting vector on the left side of the impedance
discontinuity is zero. The reflected power Poynting vector on the right
side of the impedance discontinuity is 33.33W pointing toward the left.
For about the tenth time, what happens to that reflected power Poynting
vector?