reconfigurable patch

Hello,
I am developing a reconfigurable microstrip patch antenna at two frequencies (2-5GHz tunable and 30GHz). I like to make it tunable with the help of a varactor.
Anybody having a file in HFSS Designer SV2 version. plz upload coz I m new to this version. I worked alot on HFSS v11. Any help regarding the topic will be highly appreciated!
THX:D

pl help.....
If anybody has made a simulation of
patch antenna using switches or varactor/pin
diodes in HFSS or designer, pl upload
THX

Hi,

Now if u know the answer of ur question then plz let me know....... I have started work on reconfigurable antennas and also facing same problem..