DougBC
Electrical
- Apr 30, 2021
- 1
Having trouble getting consistent results when trying to connect a wire to a patch. 4nec2 manual says end of wire must terminate in "center" of patch. So how do we find the center coordinates of a non-rectangular patch?
The cards to define a patch in the input file must list coordinates of the patch corners. But the manual goes into detail about a different method of patch definition, which uses a vector normal to the center of the patch and another vector parallel to one side and in the same plane as the patch, and the area of the patch. I understand that this definition is needed for the calculations internal to the program. So the program must read the patch corners and calculate the vectors and area.
If the program made available to the user, the internal vectors+area it used for each of the patches, then it would be a simple matter to find the center of the patch, and where one should connect a wire. But I see no way to have the program list these internal patch definitions.
So how does one make sure they are connecting a wire to the "center" of a non-rectangular patch?
The cards to define a patch in the input file must list coordinates of the patch corners. But the manual goes into detail about a different method of patch definition, which uses a vector normal to the center of the patch and another vector parallel to one side and in the same plane as the patch, and the area of the patch. I understand that this definition is needed for the calculations internal to the program. So the program must read the patch corners and calculate the vectors and area.
If the program made available to the user, the internal vectors+area it used for each of the patches, then it would be a simple matter to find the center of the patch, and where one should connect a wire. But I see no way to have the program list these internal patch definitions.
So how does one make sure they are connecting a wire to the "center" of a non-rectangular patch?
