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Old May 16th 11, 07:08 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Aug 2006
Posts: 572
Default Transmitter Output Impedance

On May 16, 11:19*am, Wimpie wrote:

The solution I gave involved both lumped circuit theory (to calculate
the net power) and transmission line theory (to calculate forward
and reflected power in a 50 Ohms environment).


Lumped circuit theory presupposes that waves do not exist and that RF
energy travels instantaneously, faster than the speed of light. You
seem to be ignoring the numerous laws of physics violated by the
lumped circuit theory. You also seem to be ignoring the fact that when
lumped circuit theory yields different results than the distributed
network theory, distributed network theory always wins because it is
closer to Maxwell's equations.

I gave an earlier CLC Pi-Network Tuner example that proved the lumped
circuit model fails when reflections are present. EZNEC results are
nothing alike when using the lumped inductance option vs the helical
wire option for an inductance in a standing wave antenna.

If you want this question answered, please open a new thread as it is
not relevant to the original question.


Asserting that it is not relevant for the purpose of diversion will
not make it go away. If one cannot understand, explain, and solve the
simplest passive interference problem, how is one ever going to
understand, explain, and solve the multiple levels of interference
possible within an active source being invaded by reflected energy? If
one cannot add one plus one, one is not likely to be able to add two
plus two and something akin to that is what I am seeing here. Until
one understands exactly how a Z0-match reverses the direction and
momentum of a reflected wave, one will not understand what is
happening inside a source with incident reflected energy. What is
actually happening in reality is revealed when one sticks with the
distributed network/wave reflection theory throughout the analysis.
People who whine that such is too difficult have to be satisfied with
a certain level of ignorance and inaccuracy.
--
73, Cecil, w5dxp.com
"Halitosis is better than no breath at all.", Don, KE6AJH/SK


 
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