#$%^&*AU2015201912A120150507.pdf#####MICROWAVE TISSUE DISSECTION AND COAGULATION ABSTRACT A dissecting head assembly (50) comprising a dielectric core (67) having a substantially planar radiating surface (77) and at least one non-radiating surface. The dissecting head assembly (50) further comprising a reflective coating (69) disposed on the at least one non-radiating surface of the dielectric core (67) and a blade (68) extending from the dielectric core (67).