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| | Need help on Simulating a 60GHz F-form Antenna by HFSS - RF Cafe Forums |
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| sageme | Post subject: Need help on Simulating a 60GHz F-form Antenna by HFSS Posted: Mon Jul 28, 2008 3:46 pm |
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Joined: Wed Jul 09, 2008 11:51 am
Posts: 2
Location: Chicago | Hi all,
I am simulating a 60GHz straight F-form antenna by Ansoft HFSS. I use the low-loss Rogers material(loss tangent is 0.0021) as the board material. This F-form antenna resonates around 61GHz(S11) . However, when I tried to get information on radiation efficiency, it turns out that the radiation efficiency is greater than "1". I don't know what's wrong with my modeling and how to improve it. Could anyone give me some advices? Thank you very much! Welcome to contact me via: hopefully81(at)gmail.com
Kevin
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Pursuing perfectness pushes us to progress
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| imodelit_moderator | Post subject: Posted: Tue Jul 29, 2008 2:03 am |
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Joined: Wed Jun 20, 2007 3:01 am
Posts: 22 | Dear sageme,
Check your radiation box size, it should larger and enclosing your structure. Check the operating frequency, in your case, it should be at least 60GHz. Could you please send a figure for your structure model on HFSS?
Best Regards,
imodelit Moderator
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| sageme | Post subject: Posted: Tue Jul 29, 2008 12:39 pm |
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Joined: Wed Jul 09, 2008 11:51 am
Posts: 2
Location: Chicago | Hi imodelit_moderator,
My radiation box is at least quarter-wavelength away from the radiating structure. The solution frequency is set to 61GHz, while the frequency sweep range is from 50GHz to 75GHz. From the S11, this F antenna really resonates around 61GHz. By the way, I don't know how to post a figure here....
Thank you very much!
Kevin
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Pursuing perfectness pushes us to progress
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| imodelit_moderator | Post subject: Posted: Wed Jul 30, 2008 1:53 am |
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Joined: Wed Jun 20, 2007 3:01 am
Posts: 22 | Hi Kevin, Could you please send me your simulation file on marwah.shafee@imodelit.com. Thanks. Best Regards, Marwah Shafee imodelit Moderator
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Posted 11/12/2012
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Kirt
