Large area wireless power transfer system

A system for large area wireless power transfer, the system comprising:

• a wireless transmission system comprising:
• a transmission circuit configured to generate an AC signal;
• and
• a transmission antenna configured to transmit a wireless power signal within a charge area, the transmission antenna comprising:
• a source coil comprising one or more first outer turns and one or more first inner turns, the source coil electrically connected to the transmission circuit, which provides the generated AC signal to the source coil thereby causing the source coil to transmit the wireless power signal, the source coil disposed such that a source current flows in a first direction through the one or more first outer turns and a second direction through the one or more first inner turns, the second direction substantially opposite of the first direction;
• and
• an internal repeater coil positioned adjacent to the source coil and configured to relay the wireless power signal from the source coil, the internal repeater coil comprising one or more second outer turns and one or more second inner turns, the internal repeater coil disposed such that a repeater current flows in a third direction through the one or more second outer turns and a fourth direction through the one or more second inner turns, the third direction substantially opposite of the fourth direction;
• and
• a wireless receiver system configured to power a load, the wireless receiver system comprising:
• a receiver antenna comprising a plurality of receiver coils each comprising a multi-layer multi-turn receiver coil, wherein each of the plurality of receiver coils is configured to receive the wireless power signal within the charge area;
• and
• a receiver circuit electrically connected to the receiver antenna and configured to (i) receive an induced AC signal that is based on the received wireless power signal and (ii) based on the induced AC signal, generate a direct current (DC) power signal.