in short...
open 4nec2 with your "favourite" sigma 4 model
1- calculate a far field pattern using for example the F7 function.
2- press F3 (or it migth have opende depending...)
3- Now in that F3 screen click on "currents"...
4- Below that indicator you will find several options
phase, currents...phase and currents etc etc.
5- if you futher investigate them you will find out the phase shift is there where the angle changes fast. That does not have to be at 0 degree.
Us people like to think "o" is a nice "spot" for a shift, but a circle doesnt understand what its "o degree" point is...we human have given it a starting point (0 degree)
Only the magnitude of the current in reference to time can provide insigth in where that shift is.
If you watch close you will find out the degree of angle will change fast (in time) and thats where your phase shift is.
Perhaps ...playing a bit with those current / phase ...current and phase thingy will give some insigth...
As i perfectly understand it is difficult to "get"especially from me ....English not beeing my "best" aspect hihi
Ehmm...that in time thingy...is just looking upwards the antenna..a current goes on the antenna and "stops" at the top.
There is a time differnce between those two. That time difference can be seen in the different segmentations, cause the vertical radiator is buildt up with segmentations on top of each other and there for representing a different "time"
You can get the model of GHZ24 to work.
Open 4nec2
Main window........go to settings:
press notepad edit.
click on that icoon "red book/pencile"
And copy past everything what is there into the "wires" window.
"save" and your there...
I havnt really looked at the model, but GHZ24 already said about agt etc...so im sure it is "close"...(if not spot on)
h
