Help me calculate the capacitance of 2 parallel plates

[camelot2]

HFSS - Please Help Me

Hi, I am trying to calculate the capacitance of 2 parallel plates using HFSS
ver 9.1 and can not get the answer. The answer should be about 107pF.

Each plate is 1.0 inch x 1.0 inch and 1.0 mil (0.001inches) thick. The
plates are seperated by 10 mils. The dielectric layer between the plates has a dielectric constant of 4.4.

I am not sure how to set up the model,boundaries or the excitations (wave ports or lumped ports). Attached is my file <2parallel_plates.hfss>. Please tell what I am doing wrong and please attach your file.

I thank you very much. "camelot2" - Dave Collins

 

[borich_03]

Re: HFSS - Please Help Me

You can try to execute manual meshing inside the dielectric layer.

 

[goxy]

Re: HFSS - Please Help Me

Try to increase number of passes, this number shoulld be about 10-20 for good results.

You forgot to upload your file in last post

 

[caocao]

Re: HFSS - Please Help Me

Hi,
I don't know which style field you want to simulate,static or time harmonic field?
If it's time harmonic field,the parallel palte capacitance is equated to the coaxial transmittal line,you can draw a coaxial model set two ports and simulate it.
Regards!
caocao

 

[chinaing]

You can see the manual meshing inside the dielectric layer

 

[Scholl]

Re: HFSS - Please Help Me

Increase number of adaptive passes is a good idea.And you can reduce Max Delta S.

 

[jackle]

HFSS - Please Help Me

hi, I am a newer too, If nobody can helped, you should run your own model repeatedly with step-by-step changing of the conditions. it does work to me.
good luck!