A cavity simulation in HFSS

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bin123

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Hello, i'm a student came from china, now i have a question about S11 parameters in HFSS, why my s11 value is -0.000035dB but not -20dB when it come to resonate frequency 1MHz. are
there some problem in my soft setting?
 

Hi, i do not have a exact solution for your problem while only have this picture that you posted. If you can send more designing information with this antenna, i would like to help you.
 
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    bin123

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I also had many problems with HFSS and cavity simulations with my master thesis.
I finally succeded at simulating a cavity but not a cavity filter
It may be problem of the port definition... I attatch you the cavity I made with S11 simulation at -3db at the resonating point and the other is the eigen simulation. You could try that too.
I also attatch you my master thesis and hope to be helpful for you.

https://ddd.uab.cat/record/148404?ln=es

https://mega.nz/#!rN9BURxZ!JnLeGapomZ3E3K3iP5mkL9L0H6Ogxm07uiloLhdpCMM
 
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    bin123

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By_Delly said:
Hi, i do not have a exact solution for your problem while only have this picture that you posted. If you can send more designing information with this antenna, i would like to help you.
Click to expand...

thank you so much, finally i have figured my issue out. it's the mismatch problem, when i add an another port and use drive model method, then i succed
 

thank you every one who help me, in the end i figure my problem out by drawing another new port as a match port
 


i have browsing your paper and thank you, i am a postgraduate and my major is about accelerator cavity loaded by ferrite. i wish we can futher exchange about HFSS
 

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