spacing or seperation on HFSS

i need to know what shall be the best possible solution to have array spacing of 3/8lambda between 2 elements of ADAPTIVE PHASED ARRAY dipole antenna either NO ARRAY/REGULAR ARRAY/CUSTOM ARRAY when comes to no array then what shall be its alternatives.

i think regular array setup would be useful, it help you easily define seperation of cells, also phase can be adjusted as per requirement,