HFSS Simulation of restangular patch help needed

[bol]

What is wrong in my simulation of patch?
Gain is too low.
The operating frequency of my design is 820 Mhz.
Help me please///
Here my patch..

 

[tyassin]

Hi

First of all I can not simulate your design. There seem to be a problem with your port.
Second I would increase your Air_box in the +Z direction this would properly change the result.

Regards

 

[bol]

Hi

First of all I can not simulate your design. There seem to be a problem with your port.
Second I would increase your Air_box in the +Z direction this would properly change the result.

Regards

I simulate design without problem.
I change size of airbox but it is not enough.Gain change from 0.02 to 0.28.And here my changing design

 

[tyassin]

Hi

I have simulated your design and i seems to have very low gain.
I do not think you have specified it in dB.

 

[ferdows]

hi
pls convert your file to.sm3 and check it in cst and see u far field usually HFSS have problem for lower frequency simulation if u simulate in CST i think u receive more than 1 dB

 

[bol]

hi
pls convert your file to.sm3 and check it in cst and see u far field usually HFSS have problem for lower frequency simulation if u simulate in CST i think u receive more than 1 dB

No it is does not help. And I increase frequency to 2.75 Ghz. And gain does't change. Frequencies of resonance are 0.82 and 2.75 Ghz.