#$%^&*AU2016200854B220170525.pdf#####DUAL-BAND DIPOLE MICROWAVE ABLATION ANTENNA ABSTRACT A method for forming a lesion is disclosed. The method comprises supplying microwave energy at a first frequency to a first frequency radiating section (76) of a triaxial microwave 5 antenna assembly (112), the first frequency radiating section (76) having a first predetermined length; and supplying microwave energy at a second frequency to a second frequency radiating section (78) of the triaxial microwave antenna assembly, the second frequency radiating section (78) having a second predetermined length; and selectively energizing at least one of the first frequency radiating section (76) and the second radiating section (78) to adjust at least one 0 property of the lesion. 10980276V1