A dual band wireless power and data telemetry for retinal prosthesis

Area of Science:

• Biomedical Engineering
• Electrical Engineering
• Telecommunications

Background:

• Inductive coupling is standard for wireless power and data in biomedical telemetry.
• Existing single-carrier systems face trade-offs between high data rate and power efficiency.
• Medical device performance demands simultaneous high data rate and power efficiency.

Purpose of the Study:

• To propose and analyze a dual-band telemetry system for improved biomedical device performance.
• To address the interference challenges between power and data carriers in a dual-band system.
• To derive design equations for optimizing coil performance in the dual-band system.

Main Methods:

• Developed a dual-band telemetry system using distinct frequencies for power (lower) and data (higher) transmission.
• Analyzed magnetic coupling interference between the power and data carriers.
• Derived coil design equations to maximize received data signal strength.
• Built and tested a prototype system for a retinal prosthetic device.

Main Results:

• Demonstrated successful simultaneous power and data transmission using the dual-band system.
• Achieved high data rates without compromising power transmission efficiency.
• Validated the effectiveness of the derived design equations in coil optimization.

Conclusions:

• The proposed dual-band telemetry system effectively overcomes the limitations of single-carrier systems.
• This technology enables high-performance biomedical devices requiring both high data rates and efficient power transfer.
• The system shows significant promise for applications like retinal prosthetics.