Deep Brain Stimulation (DBS) is a proven treatment method for neurological disorders that traditionally requires invasive surgery. This report explores a non-invasive alternative using electromagnetic microwaves-based stimulation. A simplified head model, represented by an ellipsoidal multilayered structure, was developed to simulate microwave propagation through biological tissues. An antenna array composed of magnetic point dipoles was constructed and optimized to create focus at different positions and frequencies within the brain. To further increase transmission and reduce reflection, a dielectric matching layer was introduced, resulting in significant improvements. The effects of key design parameters on displaced and centered focal points are analysed and presented, providing a solid background for future research in non-invasive microwave DBS.
Carlsson et al. (Wed,) studied this question.