[SOLVED] Ansys Terminal Port Error

[rxnr]

Hello.

I am currently trying to parameterize the feedline position on my rectangular microstrip patch antenna on HFSS. For reference, here is my design.

I am trying to offset the location of the feedline along the x-axis to optimize the performance. For this, I am trying the parameterize options in HFSS. I have tried setting the range of the x-coordinate from -8 to 8 with a step of 1. The nominal value, ie, location of feedline in the image is at -0.5.

And on validation and simulation, I only get results for -1, 0.5 and 1 while the others have this particular error.

As you can see, only -1, 0 and 1 are simulated. How can I rectify this error?

Thank you for taking the time to read so far.
Hoping for help!

 

[tepalia02]

No sure if it will help. But you can check this out: https://www.edaboard.com/threads/hfss-port-refinement-process-hf3d-error.351652/

 

[volker@muehlhaus]

I am trying to offset the location of the feedline along the x-axis to optimize the performance

Independent of your port error: Shift in x direction sounds like the wrong method to optimize the feed. Have a look at inset feed.

Antenna-Theory.com - Rectangular Microstrip (Patch) Antenna - Feeding Methods

Feeding methods (method for driving power to the antenna) are introduced. The direct feed, the inset feed, the aperture feed and the coupled or indirect feed are presented for microstrip antennas.

www.antenna-theory.com

 

[D.A.(Tony)Stewart]

Are you planning to use dielectric tolerances so that you do not have to fail your s11 specs without tweaking?

"Ground_Plane_B and the Bottom_Patch should be used as reference conductors for the terminals of the traces T1 and T2."

 

[rxnr]

Are you planning to use dielectric tolerances so that you do not have to fail your s11 specs without tweaking?

"Ground_Plane_B and the Bottom_Patch should be used as reference conductors for the terminals of the traces T1 and T2."

Hello, I managed to solve this error. But unfortunately my gain plot and directivity plot are both empty.

Would you be able to help me on why?

 

[vfone]

You may need to set a radiation field setup and a radiation box.