Optimization of the Coupling Coefficient of the Inductive Link for Wireless Power Transfer to Biomedical Implants

Figure 11

(a) The detailed view of a planar spiral Tx coil. (b) The cm-sized Rx coil. (c) Inductive link measurement setup with Rx coil in air environments. The Tx and Rx coils are supported by FR4 PCBs and Plexiglas flame and connected to a vector network analyzer by the SMA connectors.

(a)

(b)

(c)