HFSS vs. CST in EBG's. URGENT

I need to compare HFSS vs. CST for analyzing EBG's structures. Do you have a document of such a type, or the same example simlated in HFSS and CST?
VERY VERY VERY URGENT.

Hello Lara,
I used Sonnet em & verified with the published paper on EBG...
with measured results...
Size_Reduction_of_Electromagnetic_Bandgap_(EBG)_St ructures_with_New_Geometries_and_Materials.pdf
https://www.edaboard.com/viewtopic.php?p=870801#870801

Thank you manju, I've read your paper, but it's differtent waht I need. I need a comparision bewteen CST and HFSS analyzing EBG's. A report for example is suitable. If not, the same example in CST and in HFSS.
Thanks,
Lara.

hi lara,i use cst in ebg simlation specially in phase reflection diagram that determine resonace and band
regards

hi abdoeng,
hw you have find the reflection phase of PBG structure? Can you tell me the steps for it? What version of CST or HFSS you have taken? Can you give me an example for it? i shall be hoghliy obliged to you..

Please help with my post: https://www.edaboard.com/thread259642.html#post1113760