Wireless power assembly

A wireless power assembly comprising:

• a signal generator configured to generate an alternating current transmission signal having a transmission frequency of at least 500 Hz;
• a transmitter transducer assembly operatively coupled to the signal generator for producing an electromagnetic field in a power transfer region by conducting the alternating current transmission signal, the electromagnetic field for transferring power wirelessly to a power receiver when the power receiver is located in the power transfer region, the transmitter transducer assembly comprising a plurality of loops of electrical conductors that each produce a respective electromagnetic field, wherein the plurality of loops includes a first loop conducting the alternating current transmission signal with a first predetermined phase and a second loop positioned adjacent the first loop and conducting the transmission signal with a second predetermined phase that is 180 degrees from the first predetermined phase;
• wherein the transmitter transducer assembly further comprises a master conductor coupled to the signal generator for conducting the alternating current transmission signal with the plurality of loops positioned at spaced locations along and connected electrically serially to the master conductor for receiving the alternating current transmission signal from the master conductor;
• and
• wherein the master conductor is configured as a master loop extending around a master axis and each loop of the first plurality of loops extends in a plane transverse to a plane of the master loop and facing the master axis.