[error] Fast sweep setup, process abc3d

[sandruska]

I'm trying to analize a coaxial to circular waveguide transitions and when I try to do a fast sweep, HFSS shows the next message:


[error] Fast sweep setup, process abc3d : "LumpPort1" mode 1 crosses cut-off in the specified fast sweep range. Consider splitting the sweep into multiple ranges. Use a port-only discrete sweep to locate the cut-off frequency.

What does this mean?

Thanks and Regards.

 

[itaifrenkel]

Hi,

In Waveguides use waveports. Set more than one mode, and you wil be able to see the frequency ranges of each mode.

Itai

 

[haydar]

hi
why more than one mode should be used? what is the advantage?
thanks.

 

[sandruska]

Hi,

In Waveguides use waveports. Set more than one mode, and you wil be able to see the frequency ranges of each mode.

Itai

I am Analysing a coaxial to rectangle waveguide transitions and I am using rectangles for aproximating the coaxials. The design doesn't permit me using wave ports (I think. Please, see the design). What can I do?, Could I use wave port in this design?, How?.

Regards and Thanks.