design ultra-wideband log-periodic dipole antenna

hi,
i have problems with designing UWB LDPA IN HFSS,can u help me in designing antenna by cascading the LPDA with 29-element and the meander line
dipole array with 11-element,ultra-wideband of 20-2200 MHz.




best regards.
eng.ahmad jaradat

this is the UWB LDPA