THE CHALLENGE:
Powering deep-seated neural stimulators—implanted up to 12 cm within lossy biological tissue—traditionally requires invasive bulky batteries or inefficient inductive coupling that limits patient mobility. The engineering challenge was to design a wearable, low-profile antenna assembly capable of stable, non-inductive energy transfer to miniaturized passive modules without excessive thermal rise (SAR).
THE ENGINEERING SOLUTION:
This invention introduces a specialized wearable antenna assembly optimized for high-penetration wireless power distribution.
- Near/Far-Field Efficiency: Unlike traditional inductive coils, this system utilizes a proprietary architecture to transmit linearly polarized energy, achieving efficient coupling at depths of up to 12 cm.
- Wearable Integration: The low-profile substrate is engineered for seamless integration into patches, belts, or garments, maintaining a robust power link even during patient movement and varying postural orientations.
- Precision Impedance Matching: Optimized for the complex dielectric environment of the human body, the assembly mitigates detuning effects to ensure a stable link budget to passive, battery-free stimulators.
- Thermal Safety: Designed with focused electromagnetic path management to maximize power delivery to the implant while strictly controlling localized tissue heating.
