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what's the best solution frequency for a design with HFSS

时间:03-31 整理:3721RD 点击:
hi everybody,
i'm newer for HFSS.
when setups of Analysis,different solution freqs get different s11s of a antenna,and i dont kown which one is ok.
which req should i chose for a band(100M-200M I sweeped,and 145M is concerned)? and what's your opinion?

Can anybody help me?Thanks a lot.

Hi,

I think you should take the greatest frequency it's linked to initial mesh, because HFSS will calculate it's mesh upon this frq and it will use it for the lower frequencies.
Take a look to Antenna advanced topics representation for HFSS v11 given by Ansoft.you should find the link here.good search.

The Extension bmp is not allowed

Yes, as a general rule of thumb, use the highest frequency of interest, in this case 200 MHz.
Stay away from the interpolating sweep, use discrete sweep, that will solve the model at all the frequencies. It takes a long time ( I do not know how big your model is), but is safer.
As this is an antenna model, make sure that your radiation boundary is set up properly.

Regards :D

thank fantomf4
fast sweep i always use,it save time i think.
i will try discrete sweep.
PML boundary is used and the distance between antanna and PML was 1/10 lamda(100M in modal).
is it proper?
regards!

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