Methods and systems to combine RF ablation therapy with device navigation

A method of determining a location of a treatment device during an ablation procedure within a patient, the method comprising:

• delivering pulsed electric field ablation energy from an energy generator to an ablation electrode of the treatment device to an area of tissue;
• delivering navigation energy to a plurality of external patch electrodes from a plurality of navigation energy sources, the navigation energy delivered by each of the plurality of navigation energy sources being a same frequency;
• and
• filtering the delivery of the ablation energy and the delivery of the navigation energy using a first filter that is applied to an input of the navigation energy sources, the first filter allowing navigation energy to pass between the treatment device and the plurality of navigation energy sources while presenting a high impedance and preventing the ablation energy from entering the plurality of external patch electrodes.