WIRELESS POWER TRANSMITTER AND RECEIVER SYSTEM

Disclosed herein is a wireless power receiver system which includes a programable gain power amplifier configured to receive an energy input derived from the electromagnetic energy source and direct an amplified energy output signal into a power harvesting circuit within an optimal input range of the power harvesting circuit at which the amplified energy output signal is converted into DC current at an efficiency of greater than or equal to about 50%. A wireless power bank having a plurality of wireless power receiver systems is also disclosed.