Contents I. Introduction
Wireless power transfer (WPT) system introduces a new pathway for transferring continuous power to the low-power circuits such as implantable medical devices, where replacement of batteries is difficult, and the space is limited. The treatment of these neurological disorders exploits brain stimulation techniques such as magnetic seizure therapy (MST), deep brain stimulation (DBS), etc [1]. The proposed wireless power transfer (WPT) technique eliminates the bulky wires and batteries attached to the animals for optogenetic neuromodulation application and thus enables long-term behavioral studies. In this work, a reconfigurable pulse stimulation system is employed which makes the system suitable for the stimulation in different deep brain regions such as the subthalamic nucleus, thalamus, etc. [2]. The optogenetic device is powered up wirelessly using a TX coil which is connected to a signal generator and placed under the floor of the behavioral cage. In our prior works, a headstage-based WPT system is developed to provide continuous power to the stimulation circuit all across the behavioral cage [3], [4]. However, the proposed TX coil architecture had some blind spots where the system was not able to provide enough power for the stimulation.
