Learning Forum

[hoyyoth]

Dear Team,

May I know what you mean by radiation box in HFSS.

If you can share some materials to learn about radiation boxes, it is well and good.

I have a question regarding PCB via radiation box.My question is given below

"If you are changing your radiation box dimensions in via structure modelling what will be impact on return loss"

Regards

Har

[Praneeth]

The radiation boundary is defined to absorb the inward electromagnetic radiation incident on it.
It is required to define if the simulation model is radiating structure.
By general rule, this boundary should be placed at a distance which is at least one forth of operating wavelength.
For a via structure, if everything is setup correctly then you would not notice any difference in return loss for different dimension of the radiating boundary.
More information on this can be found in the HFSS help document.
All the very best.

[hoyyoth]

Hi Pmunga Thank you very much.
If you don't mind could you please share the link for HFSS help documnet.
Regards
HARI

[Praneeth]

Please note that you can find the help documents for each design type of Ansys EDT in the installed directory.
You can also access these pdf files as shown in the screenshot below.
Here you can also access online help if required.
All the very best.