Reply To: HFSS Lumped port issue

[katherine.duncan]

Hi Praneeth,

Thank you for your response and the links to the educational materials.

Yes, I am referring to the sub-window.  I do not see any other errors in my model set-up.

To create my models, I opened the software, inserted the HFSS design tool, and drew my structure.  I have drawn the structure multiple ways to determine why I am receiving this error message.   I drew the structure as a wire – 1^st drawing a half wavelength wire and subtracting it from a small gap cylinder, a second method was to draw one arm and mirror it across the plane, and a third way was to create a planar half wavelength strip subtracting a small gap rectangle.  In these three different models, I created an air box approximately a half wavelength bigger than the antenna. I assigned a radiation boundary to the air box.  I next created a small rectangle, orienting it in the plane of the dipole between the two arms of the dipole.  The small rectangle was the same size as the gap and positioned in the center of the arms of the dipole.   I have checked this rectangle to verify that it is the same size as the gap and is centered and touching the arms of the dipole.  I assigned the lumped port excitation on this small rectangle. Instead of the lumped port general window popping up, I received the reference conductors for terminals window.

There is no way to assign an integration line to indicate the direction of the current.  I can click on the excitation under the project manage tab, and the lumped port window opens, but I cannot define the integration line. 

Next, I set up the analysis through the advanced solution set-up – I defined a single frequency and changed the maximum number of passes to 30. I did not edit the frequency sweep – I kept it at the default settings.  I inserted a far-field set-up as an infinite sphere – keeping the default values.

When I validate the model, I receive errors with the boundaries and excitations.  So, I am confident my issue is with the lumped port excitation.  My excitation is within the solution space, so I am sure this is the correct excitation.  The error states “Port “1”: the port has no terminals defined on it.” 

Again I appreciate any suggestions or feedback.

Regards.