Design of Additional Power Supply for Subretinal Implants device

In the paper, a methodology of highly efficient wireless power transmission in retinal prosthesis was presented. It is based on inductive coupled coil pair which is the most common method in medical implants. In the design, a class-E driver was used in the primary side. In order to reduce the dissipation in the retina, an improved half wave rectifier circuit was adopted to get effective voltage in the secondary side. Then the design is optimized by orcad/pspice9.2. The third part is the simulation result; the load voltage of design can reach 5 volts. The last part is conclusion.