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#1
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Cecil:
[snip] forward voltage. You didn't realize that you were doing a 2-port analysis. -- 73, Cecil http://www.qsl.net/w5dxp [snip] I was just castigated by Roy and Dave Robbins on another thread for making postings about "ports", apparently we are not allowed to discuss "ports" when we are discussing transmission lines since ports have only to do with networks and transmission lines have no ports!!! ;-) -- Peter K1PO [A guy who believes that transmission lines have two ports.] Indialantic By-the-Sea, Fl |
#2
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Peter O. Brackett wrote:
I was just castigated by Roy and Dave Robbins on another thread for making postings about "ports", apparently we are not allowed to discuss "ports" when we are discussing transmission lines since ports have only to do with networks and transmission lines have no ports!!! Darn Peter, I was hoping you could help me explain to Roy what is wrong with his analysis - that he is using a 2-port analysis and getting four power terms as a result, two of which have to be added to get forward power and the other two of which have to be added to get reflected power. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#3
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"Cecil Moore" wrote in message ... Peter O. Brackett wrote: I was just castigated by Roy and Dave Robbins on another thread for making postings about "ports", apparently we are not allowed to discuss "ports" when we are discussing transmission lines since ports have only to do with networks and transmission lines have no ports!!! Darn Peter, I was hoping you could help me explain to Roy what is wrong with his analysis - that he is using a 2-port analysis and getting four power terms as a result, two of which have to be added to get forward power and the other two of which have to be added to get reflected power. i like ports, i use them all the time in network analysis, they are an important part of the tcp/ip protocol!. for transmission lines all you really need is voltage OR current waves, everything else falls out from those. computing power and trying to reflect power can only lead to confusion, because unless you use the complete formula for complex powers you are losing important information.... and don't even start on computing rms or other average powers, then you have totally lost the physical significance of the waves. |
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