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The port setup for stripline should extend to the top and bottom grounds, and should be wide enough so that the fields from the trace do not attach to the sidewalls of the port.
For HFSS models, the recommended port width is 8*w if w>h and 5*w if w<h. Make sure that the port width isn't greater than lambda/2 in any direction or a waveguide mode may be set up as well.
hi
if the excitation place is inside the substrate you should use LUMPED PORT but if between different media it should be WAVE PORT.
1 define a rectangle which corresponds line and gnd in 2 sides.
2 select it
3 set HFSS>>EXCITATIONS>>
here you shold define where the exciting probe should be.
you give the coordinates of the beginning of that vector.
then the dx dy dz of it
Hi
I designed a Vivaldi antenna excited with waveport. I made waveport 5*w wide and it extends to the top and bottom grounds (as antenna321 said). Do I have to take care of antenna impedance or other parameters? I read a lot about waveports in edaboard but there are a lot of different opinions.
If antenna doesn't have "upper" ground do I have to make waveport higher than substrate? (patch antennas are excited with lumped or waveports?)
Added after 3 minutes:
"...fix antennas are excited with lumped or waveports?" - patch antenna that is!
Something is wrong with my keyboard, ...or with my brain!!!
To answer 1 of your questions: If your antenna does not have "upper ground", you have to extend the port-rectangle beyond the substrate (by about 10xsubstrate height); rectangle upper edge is not touching anything.
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