#$%^&*AU2017219048A120180329.pdf#####ABSTRACT Described embodiments include apparatus that includes a catheter and a tip electrode, at a distal end of the catheter, 5 shaped to define a plurality of microelectrode apertures. The apparatus further includes at least one printed circuit board (PCB) disposed within a lumen of the catheter, and a plurality of microelectrodes coupled to the PCB and at least partly situated within the microelectrode apertures, the PCB being 0 configured to carry signals from the microelectrodes. Other embodiments are also described.1/4 ao C cao CG m C-
