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Old April 4th 08, 01:59 AM posted to rec.radio.amateur.antenna
Keith Dysart[_2_] Keith Dysart[_2_] is offline
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First recorded activity by RadioBanter: May 2007
Posts: 492
Default The Rest of the Story

On Apr 3, 4:49*pm, Cecil Moore wrote:
Keith Dysart wrote:
My sheet agrees with yours for the samples I checked.


Here's an example that changes nothing but allows
isolation of the component energy flows.

* * * * * * * * * * *50 ohms
* * +---1WL-50-ohm---\/\/\/\---1WL-50-ohm---+
* * | * * * * * * * * * * * * * * * * * * * |
Source 141.4*cos(wt) volts * * * * * * * Load +j50
* * | * * * * * * * * * * * * * * * * * * * |
* * +---------------------------------------+
* *GND * * * * * * * * * * * * * * * * * * *GND

It appears to me that the confusion arises from
the *series* resistor.


It seems to me that this circuit is quite different.
There is a reflection where the left TL connects
to the 50 ohm resistor. There is a reflection when
the reflected wave on the left TL arrives back at the
source and there is a reflection when the reflected
wave on the right TL hits the 50 ohm resistor.

This circuit takes an infinitely long time to settle.
The previous circuit only had a reflection at the load
and settled after one round trip.

Quite different.

...Keith